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Silica gel cat sand actually is Type C silica gel Silica gel cat litter is non-toxic and pollution-free, it is hard to be broken, can inhibit bacterial from growing. Yuanying cat litter has the following merits: 1. It can absorb and hold the urine and feces odor and keep your room air fresh. 2. It can completely absorb the cat urine immediately although adsorption liquid is over 80% of its own weight and still can keep its appearance dry. 3. 4 lbs cat litter for one cat can be used for one month. 4. It can inhibit bacterial from growing. Cat litter itself is white, can be made more colors according to user requirements, can also be added fragrances. Common fragrances include rose, lavender, jasmine, lemon, sweet-scented osmanthus, ocean, apples, oranges, strawberries, etc. Packing specifications are 3.6L, 3.8L, 4L, 5L, 7.6L, 8L, 10L, 15kg, 20kg and so on. Packaging can be customized according to customer's requirements. How to use 1. Fill litter box with silica gel cat litter to the lever of 15 inches. 2. Clean up the rubbish after use to keep clean periodically. 3. For more than one cat, you can reduce the period of replacing cat litter in proportion, rather than placing much more cat litter in the box, the proposed way to use one 3.6 L bag is following: a cat, one month, two Cats, about 15 days, three cats, about 10 days. 4. After the solid waste is dehydrated, scoop it out without any litter. 5. Store Cat litter box or silica gel cat litter in clean, non-moisture places, to extend its service life.
Molecular formula: mSiO2•nAl2O3•xH2O Silica alumina gel, which is a kind of special products formed by adding a certain amount of alumina in fine-pored silica gel, different aluminum oxide content has different performance. Yuanying has 17% water resistant silica alumina gel, 0.5% 8% fine-pored silica alumina gel. 17% Silica Alumina Gel 17% silica alumina gel is a kind of fine-pored water-resistant silica alumina gel, generally used as a protective layer for fine-pored silica gel and fine-pored silica alumina gel. It can also be used alone under a high content of free water (liquid water). Although operating system contains liquid water, this product still can achieve a lower dew point. Mainly used for drying air in the process of air separation; acetylene adsorption in the production process of liquid ammonia and liquid nitrogen; compressed air drying and all kinds of industrial gases drying; as liquid adsorbent and catalyst carrier in the petrochemical industry, electric utility and brewing; as protective layer for common silica gel and silica alumina gel. When use this product as the protective layer, its dosage is about 20% of the total. 0.5%8% Silica Alumina Gel The appearance of 0.5 8% silica alumina gel is slightly yellow, it has good chemical stability, not burning, not dissolved in any solvent. Comparing with fine-pored silica gel, this product has the same adsorption capacity at low relative humidity, but adsorption capacity exceeds 610% at high relative humidity, and thermal stability is 150 ℃ higher than fine-pored silica gel (200 ℃), high above. It is very suitable for temperature swing adsorption, separating agent. It is mainly used for natural dehydration, and light hydrocarbon separation of temperature swing adsorption (PSA), etc. also can be used for petroleum industrial catalyst and catalyst carrier, industrial desiccant, liquid adsorbent and gas separation, etc.
Sulfur Recovery Catalyst It produces large amounts of H2S gas in the process of natural gas purification and sulfur crude oil processing, in order to protect the environment and recovery of sulfur, people use claus technology processing H2S sour gas, and activated alumina sulfur recovery catalysts play an important role in this process. Activated alumina sulfur recovery catalyst has very large pore structure, pore radius larger than 700? are more than 70% of the total pore volume. This macroporous structure can reduce the diffusion resistance, make the reactant diffusing into catalyst internal quickly, and let generation of sulfur spread out from catalyst internal quickly, so activated alumina sulfur recovery catalyst compared with ordinary alumina catalyst has higher catalytic efficiency and longer service life. Activated alumina sulfur recovery catalyst has large porosity ratio, high specific surface area, good thermal stability, high strength, small abrasion ratio, resistance to sulfate poisoning, high organic sulfur hydrolysis rate, long service life. Titanium Dioxide Sulfur Recovery Catalyst Titanium Dioxide Sulfur Recovery Catalyst is a kind of TiO2 / Al2O3 auxiliary type sulfur recovery catalyst, through the special impregnated preparation technology loading active components TiO2on the activated alumina carrier, thus it has higher activity of hydrolysis reaction to the organic sulfide such as COS and CS2. Currently widely used activated alumina sulfur recovery catalyst, under the working condition of Klaus device, often forming sulfate due to the presence of trace oxygen and organic sulfur in feed gas, which lead to the specific surface area of catalysts decreased, and activity gradually lost. Under normal circumstances, the service life of activated alumina sulfur recovery catalysts in a year or so, under the condition of high oxygen, the deactivation is faster. Organic sulfur hydrolysis often requires a higher reaction temperature, but it doesn't match the temperature of claus reaction, so it is not conducive to the normal reaction of claus. Sulfur recovery catalyst of active TiO2 base solve above problems, its biggest characteristic is that it has high organic sulfur conversion rate at low temperature, strong \"deoxidation\", and difficult to form sulfate on the catalysts. In claus device, in addition to promoting claus reaction, it also has purifying effect, thus ensure the normal use of the sulfur recovery catalyst and prolong the service life of activated alumina catalyst. TiO2 sulfur recovery catalyst is mainly used for catalysing hydrogen sulfide and sulfur dioxide chemical reaction generated elemental sulfur in the claus sulfur recovery process, processing all kinds of acid gas containing H2S. Can be used in any level converter used of sulfur recovery device, also can fill in the lower part of the first reactor for the hydrolysis reaction of organic sulfide COS/CS2.
13X molecular sieve, also called Natrium X molecular sieve, Zeolite 13X, is a kind of alkali metal silicon aluminate, its skeleton structure composed of silica and alumina tetrahedral FAU, main crystal holes are twelvering structures. To the X type molecular sieve,if silicon aluminum ratio is not the same, crystal structures are different. 13X molecular sieve silicon aluminum ratio≈2.6-3.0 (SiO2/Al2O3≈2.6-3.0), aperture 10A, it can adsorb any molecules which critical diameteris greater than 3.64A and less than 10A, as long as the molecules can be adsorbed by 3A, 4A, 5A type molecular sieve, they also can be adsorbed by 13X molecular sieve. Furthermore, 13X molecular sieve can adsorb bigger critical diameter molecules, such as aromatic hydrocarbons and branched chain hydrocarbons. Application: Purifying the gas in the air separation device, removal of H2O, CO2 and hydrocarbons; natural gas, liquefied petroleum gas, liquid alkanes (propane, butane) dehydration and desulphurization (removal of H2S and thiol); general gas (such as compressed air, permanent gases) depth drying; ammonia synthesis gas drying and purifying; aerosol, propellant desulfurization and deodorization; pyrolysis gas removal of CO2; catalyst carrier; water and carbon dioxide coadsorption; water and hydrogen sulfide gas coadsorption etc.
In petrochemical production process, the chlorine in the feed gas can cause many kinds of catalyst and adsorbent poisoning, disabling adsorbent and catalytic performance, the existence of chlorine can also severely corrode device and equipment, influence the normal operation of the production, so must remove chlorine, usually used solid dechlorinating agent removal chloride in the feed gas. Yuanying dechlorinating agent has a wide used temperature, even activity at high and low temperature, good resistance to water, stable active components and reacted chlorine, can be used for syngas dehydrochlorination, protecting catalyst and adsorbent, also can be widely used in natural gas, H2, N2, NH3, naphtha, CO, CO2 for dechlorination.
Yuanying activated alumina defluorinating agent has high defluorination capacity, and it is non-toxic, tasteless, odorless, insoluble in water and organic solvents. Widely used for fluoride removal in high fluoride area, cyclic alkanes defluorinating agent among alkylbenzene production. This product can also be used for dearsenification, wastewater decolorizing, deodorizing, etc. Activated alumina defluorinating agent is white spherical porous particles, uniform particle size, smooth surface, high mechanical strength, hygroscopicity strong, does not crack and inflate after absorbing water. Fluorine is one of the trace element necessary for animal and human. Adult normal daily intake should be 23 mg, too much or too little can lead to disease, so defluorination is important in drinking water. Activated alumina has good strength, good abrasion resistance, long service life, stable performance, high defluorination capacity, after defluorination the water quality accords with national health standards, so activated alumina is one of the indispensable material in water treatment. Activated alumina defluorinating agent has amphoteric adsorption properties, by regulating the PH value of aqueous solution, anions in aqueous solution can be detached. Defluorinating equipment is similar to ion exchanger, in order to obtain high defluorination capacity, need to lower PH value, while the PH value is 5.5, activated alumina adsorption rate of fluorine is the largest. In order to meet the quality requirement and control corrosion, PH values should be slightly acidic. Activated alumina defluorination is similar to the anion exchange resin, but the selectivity for fluoride ion is larger than the anion resin. Smaller particle size can increase specific surface area, make a fully contact between activated alumina and water. For example, commonly used 1-3 mm, 0.4-1.2 mm, their specific surface area are generally more than 320 m2/g. High specific surface area means huge number of micropore, it can ensure a strong adsorption of fluoride ion in water. When raw water PH value and alkalinity is lower, defluorination capacity of activated alumina is higher, fluoride absorption of per cubic meter activated alumina is 6400 grams, fluoride absorption capacity is greater than 4.0mg/g, and the price is lower than synthetic resin.
Blue silica gel can be divided into blue indicating silica gel, color-changing silica gel and blue silica gel. Its appearance is blue or light blue glass-like ball or lump. Blue silica gel mainly used in various industries, through itself color changes after moisture absorption to indicate the level of desiccant moisture absorption and the relative humidity of the environment Storage Temperature 5 to 25 degrees, humidity≤70%, can't light or radiation, airtight save, do not contact with air directly. Blue silica gel can be regenerated, it will be returned to the original color after heating-dehydration Related information Allochroic silica gel is divided into 3 types: blue silica gel, cobalt-free blue silica gel, orange silica gel. Blue silica gel (blue to red) contains cobalt chloride, cobalt chloride color from blue to pink after absorbing water. Cobalt-free blue silica gel (yellow to red) contains congo red, congo red itself can be used as an acid-base indicator, colour change interval PH3.5 5.2, alkali state to red, acid state to violet.
We are leading supplier of Activated alumina, molecular sieves, carbon molecular sieves, clay desiccant, silica gel, cat litter, insulating glass desiccant, container desiccant, activated carbon, honeycomb ceramics, tower packing, foamed ceramics and ceramic ball.
Refrigerant mainly consist of chloride and fluoride of containing hydrocarbons, refrigeration principle is that refrigerant quickly spread. In the process of refrigerant diffusion, some of water leakage and freeze in diffuser valve and block system, at the same time, the refrigerant hydrolysis to generate the corrosive gas such as hydrogen chloride and fluoride, the corrosive gas can cause refrigerant leakage, pipeline corrosion and shorten the service life of the refrigeration system. Refrigerant desiccant can adsorb water in refrigerant effectively, thus to avoid freezing, prevent freezing blocking system and corrosion. Yuanying refrigerant desiccant does not affect the chemical stability of the refrigerant, and can adsorb organic acid and inorganic acid in refrigeration system. It has low dew point, high strength, low abrasion, strong water absorbing capacity, etc. XH-5: for dehydration and drying of refrigerants R12, R22 XH-7: for dehydration and drying of new refrigerants R-134a in household and commercial refrigerators iceboxes and air conditioners XH-9: for drying all kinds of refrigerants (except mixed refrigerant of containing difluoromethane), for example, refrigerants in refrigerators, freezers, air conditioners, and other refrigeration heat exchange device, is a kind of universal refrigerant desiccant; XH-11: for dehydration and drying of refrigerants R404a, R404b, R407c, R410a, R507
Orange silica gel mainly used as a desiccant, humidity indicator, indicating dry degree and environmental humidity. Widely used in household appliances, food, clothing, leather, petrochemical industry, pharmaceutical, aerospace, military industry, instrument industry, etc. Allochroic silica gel is divided into 3 types: blue silica gel, cobalt-free blue silica gel, orange silica gel. Orange silica gel (yellow to green) contains methyl violet, methyl violet color from yellow to green between PH0.13-0.5. Storage: Temperature 5 to 25 degrees, humidity≤70%, can't light or radiation, airtight save, do not contact with air directly. Orange silica gel can be regenerated, it will be returned to the original color after heating-dehydration
Molecular sieve (also called synthetic zeolite) is a kind of microporous aluminosilicate crystal. Its basic skeleton structure consists of silicon oxide, aluminum oxide tetrahedral. There are metal cation in its crystal lattice (such as Na +, K +, Ca2 +, Li +, etc.), these cation can balance the excess negative charge. According to their type of zeolite crystal structure is divided into A type, X type, Y type. According to molecular sieve aperture size, there are 3A, 4A, 5A, 10X, 13X. 4A molecular sieve is Na-A molecular sieve, aperture 0.4nm; if Na replaced by K, aperture 0.3nm, is 3A molecular sieve; if over 1/3 Na replaced by Ca2+, aperture 0.5nm, is 5A molecular sieve. Molecular sieve adsorption capacity come from physical adsorption (Van der Waals forces), its cavities have a strong polarity and coulomb field which show a strong adsorption capacity to polar molecules (such as water) and unsaturated molecules. Molecular sieve has a uniform pore structure, which can separate different polarity, different saturation, different sizes and different boiling molecules. It has the effect of \"sieving\", so called molecular sieves. Yuanying molecular sieve has quick adsorption speed, excellent adsorption performance, high crushing resistance, strong pollution resistance, large specific surface areas, big pore volume, more regenerative times, strong thermal stability, very long lifespan. There are the following types of products: 3A molecular sieves, 4A molecular sieves, 5A molecular sieves, 13X molecular sieves, insulating glass desiccant, refrigerant desiccant XH-5, XH-7, XH-9, XH-11, clay desiccant, container desiccant, carbon molecular sieves.
Yuanying 3A molecular sieve has quick adsorption speed, high crushing resistance, strong pollution resistance, more regenerative times and long lifespan. 3A molecular sieve, also called Kalium A molecular sieve, is Kalium ion alkali metal alumino-silicate compound. Its effective pore diameter is 3A (0.3nm), it can selectively adsorb those molecules in fluid which dynamic diameter is less than 0.3nm (such as water molecules, ammonia molecules), lets molecule dynamic diameter more than 0.3nm go through molecular sieve layer bed, and then achieve the aim of fluid mixture. 3A molecular sieve has small aperture, while adsorbs water molecules it can reject all other molecules, thus effectively avoid “total adsorption phenomena. 3A molecular sieve is a kind of excellent desiccant used for adsorbing water mainly. Application: Drying and purification of oil cracking gas; C2 and C3 fraction drying; ethylene, propylene, butylene, butadiene, pentane drying and purification; dehydration and purification of raw material of methane, ethane and propane; purification of liquid carbon dioxide; dissolved acetylene drying; water, air, gases, polar liquids (such as methanol, ethanol) and natural gas drying and purification; refrigerator drying; catalyst support; etc. 3A molecular sieve are widely used in petroleum refining, petrochemical, chemical industry, metallurgy, electronics, defense, etc., while in pharmaceuticals, light industry, agriculture, environmental protection and many other aspects, has increasingly been applied.
Yuanying activated alumina desiccant has advantages such as stable chemical properties, good adsorption capacity, high pressure-resistant, high wear-resistant, etc. Widely used in petrochemical gas and liquid drying, food, oxygen industry, textile industry, electronic industry, air filter, air compressor and automated instrument drying. Activated alumina desiccant is white spherical porous granules, surface smooth, uniform particle size, non-toxic, odorless, tasteless, insoluble in water, alcohol and organic solvents, but insoluble in acids and alkalis. It has strong moisture adsorption, does not burst after absorbing water, possesses big mechanical strength, specific surface area and pore volume. Due to the unique porous bone structure, high specific surface area and in an unstable transition state, activated alumina desiccant has biggish activity, strong affinity with active ingredient. It has a number of capillary channels, its selective adsorption is not only determined by its micro-holes diameter size, but also according to the polarity of the adsorbed materials. Activated alumina desiccant has a strong affinity to water, acetic acid, alkali, etc., is a micro-water depth desiccant also is the adsorbent of polar molecules. Its monomolecular adsorption layer has high net heat quantity, is very suitable for non-heat regenerative device (pressure swing adsorption device), its dew point temperature is below -70 ℃ and is a highly efficient desiccant.
Yuanying silica gel does not dissolve in water, any solvents, non-toxic tasteless, not burning. It has stable chemical properties, does not react with any material except strong alkali, hydrofluoric acid. It has open porous structure, high adsorption properties, good thermal stability, stable chemical properties, high mechanical strength, etc. Added dilute sulfuric acid (hydrochloric acid) into the aqueous solution of sodium silicate and let standing, thus becoming solid aqueous silicate gel. Used water washing to remove Na+ and SO4 2- (Cl-) ions dissolved in the electrolyte, after drying it is silica gel. Different manufacturing methods form different microporous structure, different microporous structure form different models, such as macroporous silica gel, silochrom (type C), type B silica gel, fine-pored silica gel (type A). There are type A silica gel, type B silica gel, type C silica gel, silica gel cat litter, silica alumina gel, blue silica gel, orange silica gel, FNG silica gel, pressure-changing adsorption silica gel Type A Silica Gel Silica gel is transparent or ivory-white granular solid, main ingredients are amorphous silica. Silica gel does not dissolve in water and any solvents, non-toxic tasteless, not burning. Silica gel hasstable chemical properties, does not react with any material except the strong alkali, hydrofluoric acid. Silica gel has open porous structure, high adsorption properties, good thermal stability, stable chemical properties, high mechanical strength, etc. Silica gel used for gas drying, gas absorption, liquid dehydration, chromatography, catalysts, etc. Regeneration temperature Silica gel can be removed moisture by the way of thermal desorption, desorption temperatures as follows: Type C silica gel≤600℃ Type A silica gel≤200℃ Allochroic silica gel≤120℃ Silica alumina gel≤350℃ Mainly used for drying and moistureproof, may also be used as catalyst carriers, adsorbents, separators and variable pressure adsorbents, etc. Type B Silica Gel Type B silica gel pore structure is between silochrom and fine-pored silica gel. Mainly used for liquid absorbent, humidity regulator, desiccant, catalyst, catalyst carrier, spices carrier, silica sand, pet bedding, whitening agent and used as the raw material of chromatography silica gel and other fine chemical products. Type C Silica Gel Type C silica gel also called silochrom This product is a raw material for preparation of silica sand, after drying and screening can form silochrom, used as desiccant, adsorbent and catalyst carrier. It can be used for drug purification, removal organic acid and polymer from insulating oil, adsorption high molecular protein in industrial fermentation process, adsorption harmful elements in water, gas dehydration, goods moisture-proof rust prevention, pet packing and so on.
Carbon molecular sieve is a new kind of adsorbent developing from 1970, and is excellent non-polar carbon material. It can be used to separate the nitrogen from the oxygen under normal temperature and pressure (PSA). To compare with tradition, PSA (Pressure swing adsorption at room temperature) has some advantages such as low investment, short start-up time, high production rate and low cost of nitrogen. Carbon molecular sieve raw material is coconut shell, coal, resin, etc. Carbon molecular sieve utilize the different sizes of nitrogen molecules and oxygen molecules to achieve the aim of separation of the oxygen and nitrogen, in carbon molecular sieve internal contains a large number of micropores, these micropores allow oxygen molecules rapidly spread into them, but large diameter such as nitrogen molecules are restricted into them. Aperture size is the basis of carbon molecular sieve to separate oxygen and nitrogen, if the aperture is too large, the oxygen nitrogen molecules are easily into the pores, and if the aperture is too small, the oxygen nitrogen can’t spread into the pores, therefore would not achieve the effect of separation. Carbon molecular sieve processing steps: The first step is to shape; The second step is activation and pore-forming, spraying into activator under 6001000℃, commonly used activator is carbon dioxide, oxygen, water vapor or mixture of them; Step 3 is using chemical steam adjusting aperture size, for example, used benzene vapor deposition in carbon molecular sieve pore wall to control its micropore aperture distribution, and make it in the range of 0.28 0.38 nm. Diameter: 1.0-2.2mm Absorption period: 2×60 second Bulk density: 630-660 g/l Crushing strength: ≥100N/p Min Packing: plastic drum, 20kg/40kg
One of important application of Activated Carbon is as catalyst Carrier and promoter, also can be directly as catalyst. As a carrier, mainly used to carry catalyst, lets catalyst load on its surface and makes it possess certain physical and chemical property, carrier itself generally does not have catalytic activity. Activated carbon impregnated with metal salts solution can make the catalyst load on the surface of activated carbon, activated carbon’s surface oxidation, acidic functional groups, electron accepting ability, free radicals, pore structure, chemical structure can affect the performance of the active component. Activated carbon has the irregular graphite structure, in which includes traces of ash, nitrogen, sulfur, hydrogen, oxygen and so on, these ingredients can have the influence to the catalyst performance; Ash is an important indicator of support activated carbon; C-O structure on the surface of activated carbon will affect oxidizing reaction, halogenating response, adsorption performance and electricity performance. Due to activated carbon has abundant pore structure, special electronic properties, easy to regulate surface groups, high specific surface area, strong acid-resistant, alkali-resistant and heat-resistant properties, when used as a catalyst carrier, the precursor of active component is fully dispersed. Activated carbon itself has catalytic activity, interaction with active component can affect the activity and selectivity of the catalyst, and can save the quantity of active substance. Compare with using metal alone, when activated carbon carriers trace amounts of transition metals, hydrogen shows obvious reversible adsorption phenomenon, this called overflow spillover phenomenon. Activated carbon includes powder and granule, in the process of gas-solid reaction, all used granule activated carbon as catalyst carrier. Although activated carbon’s specific surface area is very high, but compare with activated alumina carrier, honeycomb ceramics carrier and molecular sieve carrier, its mechanical strength is lower. Therefore, in the production process, commonly activated carbon’s strength is controlled above 95%. Precious metal catalyst includes Pd catalyst, Ru catalyst, rhodium catalyst, Pt catalyst, etc. As precious metal support, activated carbon shape can be powder, cylinder, sphere and granule. The application of activated carbon catalyst carrier: (1) Isomerization: Ni-Carbon catalyst can let plant oil isomerization (cottonseed oil, linseed oil, rapeseed oil, etc.), from non-conjugated oil into conjugated forms; (2) Hydrogenation, dehydrogenation and dehydrogenation of aromatization, cyclization and isomerization: Pd-activated carbon catalyst or Pt-activated carbon catalyst can play this catalytic role; (3) Low pressure polymerization of olefins: Activated carbon loads on Ni, Co or their oxide can let olefin polymerization; (4) Synthetic fibre: In the production of vinylon, activated carbon impregnated zinc acetate can let acetylene and acetic acid synthetise vinyl acetate; (5) Gum Rosin reprocessing: Activated carbon loads on Pd can produce hydrogenated rosin and disproportionated rosin; (6) Synthesis of vinyl chloride: Activated carbon loads on mercuric chloride can let acetylene and hydrogen chloride synthetise vinyl chloride.
Activated Alumina for hydrogen peroxide is white, spherical porous material and is non-toxic, odorless, tasteless. It is insoluble in water, esters, hydrocarbons, alcohols and other organic solvents. It has long life, not powdering and softening in water and alkali, is a special adsorbent for anthraquinone production of hydrogen peroxide. Besides adsorbing alkali in the working fluid, it also has strong reproductive property to the hydrogenation breakdown products, and the increase of degradation products in the hydrogenation reaction can be converted into the active anthraquinone, which can ensure the stability of the total effective amount of anthraquinone, and is conducive to the oxidation reaction, so it can reduce the amount of anthraquinone added, saving the running cost. Considered the regeneration, this product guarantees the good machine capability, and the active changes small after regeneration.
Yuanying activated alumina catalyst carrier is a white, spherical porous material, non-toxic, odorless, not powdering, insoluble in water and alcohol. It has even micro-holes, appropriate aperture size, big pore volume, high water absorption, small bulk density, good mechanical properties, good stability, suitable for catalyst Carrier. Application (1) The Co-Mo sulfur-resistant shift catalysts produced by Activated alumina catalyst carrier has good low-temperature activity, width working temperature, short vulcanization time and other merits, it is applicable to small and medium sized ammonia factory. (2) In the natural gas and petrochemical refining industrial process, to the hydrogen sulfide, can use activated alumina as catalyst for sulfur recovery. (3) The most widely application for activated alumina catalyst carrier is hydrotreating, it can raise H/C ratio and get rid of O, S, N, finally can remove V, Ni and other contaminants. (4) Another application for the activated alumina catalyst carrier is automobile exhaust catalyst, it can promote the oxidation of hydrocarbons, carbon monoxide and nitric oxide in exhaust gas, reduce air pollution. (5) In the petroleum hydrocracking, hydrogenation refining, hydrogenation reforming, drogenation reaction and automobile exhaust purification process, activated alumina catalyst carrier plays an important role. (6) Used for Alcohol dehydration, olefin isomerization, hydrogenation, oxidation and polymerization. γ-Al2O3, was called “ activated alumina, is a kind of porous high dispersion solid materials, because of its adjustable pore structure, large specific surface area, good adsorption performance, surface with the advantages of acidity and good thermal stability, microporous surface with requisite properties of catalytic action, therefore become the most widely used catalyst, catalyst carrier and chromatography carrier in the chemical and oil industry, and plays an important role in the oil hydrocracking, hydrogenation refining, hydrogenation reforming, dehydrogenation reaction and automobile exhaust purification process. γ-Al2O3 is widely used as catalyst carrier because of the adjustability of its pore structure and surface acidity. When γ- Al2O3 is used as a carrier, besides can have the effects to disperse and stabilize active components, also can provide acid alkali active center, synergistic reaction with the catalytic active components. The pore structure and surface properties of catalyst depend on γ-Al2O3 carrier, so high performance carrier would be found for specific catalytic reaction by controlling the properties of γ-Al2O3 carrier.
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