36results about How to "High isomerization activity" patented technology

The hydroisomerization catalyst of the present invention is a catalyst used for hydroisomerization of a hydrocarbon, including a support including a calcined zeolite modified with at least one metal selected from the group consisting of Na, K, Cs, Mg, Ca, Ba, and K, and having a thermal history that includes heating at 350° C. or more, and at least one inorganic oxide selected from the group consisting of alumina, silica, titania, boria, zirconia, magnesia, ceria, zinc oxide, phosphorus oxide, and a composite oxide containing a combination of at least two or more of these oxides; and at least one metal supported on the support and selected from the group consisting of elements belonging to Groups 8 to 10 of the periodic table, molybdenum and tungsten.

The invention relates to a low-temperature isomerization method for low-carbon normal alkanes, wherein the low-temperature isomerization method includes the following steps: (1) carrying out heat exchange of a light hydrocarbon raw material containing normal C5 and normal C6 as principal components with an isomerization product, and after heat exchange, rectifying to obtain heterogeneous C5, normal C5 and a heavy hydrocarbon; (2) rectifying the heavy hydrocarbon again, to obtain heterogeneous C6 and a heavy hydrocarbon, mixing the normal C5 with the heavy hydrocarbon, and then supplementing chlorine; (3) carrying out drying dehydration on the material obtained after chlorine supplement, mixing with dried fresh hydrogen and circulating hydrogen, heating, and carrying out an isomerization reaction under the action of a catalyst after heating; and (4) after carrying out heat exchange of the isomerization product with a fresh raw material, carrying out first gas-liquid separation, wherein the obtained non-condensable gas is circulating hydrogen; and carrying out gas-liquid separation on the obtained liquid again, mixing the obtained liquid with a fresh raw material, and then rectifying. The yield of the liquid product obtained by the low-temperature isomerization method is more than 98%, the isomerization rate is 60%-90%, and the octane value can be increased by 10-30.

A preparation method and an application method of a non-noble metal reforming catalyst. The catalyst comprises a Ni2P active component and a composite carrier. The composite carrier comprises gama-Al2O3 and SAPO-11. The preparation method comprises the following steps: firstly, adding sesbania powder into raw materials of aluminium hydroxide dry gel powder, pseudo-boehmite and SAPO-11, then adding nitric acid aqueous solution, performing kneading, strip extrusion, air drying, drying and roasting to prepare a composite carrier of gama-Al2O3-SAPO-11; secondly, preparing a nickel hypophosphite impregnation liquid at 60-80 DEG C, controlling the molar ratio of phosphorus to nickel, impregnating the composite carrier by constant temperature supersaturation impregnation, performing air drying and vacuum drying to obtain a catalyst precursor; finally, putting the catalyst precursor in a tubular furnace, and roasting in N2 to prepare the Ni2P/gama-Al2O3-SAPO-11 catalyst. Compared with the prior art, the preparation method is simple in process, low in preparation temperature, and mild in reaction conditions; the prepared catalyst is high in dispersity, can be used in naphtha reforming reaction, has high aromatic hydrocarbon yield and activity stability, and is low in price.

Catalysts comprise a combination of molecular sieve having a pore diameter of from about 4 to 8 angstroms and a catalytically-effective amount of molybdenum hydrogenation component and a sufficient amount of at least one platinum group metal hydrogenation component to enhance the isomerization activity of the catalyst.

The invention relates to a catalyst and a method for preparing butane-2 by C_4 olefin hydroisomerization, and the catalyst and the method are mainly used for solving the technical problems in the prior art of low reaction balance index, low olefin yield and high catalyst cost. In order to better solve the problems, the technical scheme adopted by the invention is as follows: the catalyst comprises the following components in parts by weight: (a) 10-20 parts of metal nickel or an oxide thereof; (b) 0.1-5 parts of metal molybdenum or an oxide thereof; (c) 75-90 parts of aluminum oxide-silicon dioxide composite carrier, wherein the pore volume of the catalyst is 0.5-0.9 ml/g, the specific surface area is 150-190 m<2>/g, the average aperture is 13-16 nm, and the pore volume with pore diameter larger than 10 nm occupies 20-60% of the total pore volume. The catalyst can be used in the industrial production of increasing the production of butane-2 by C_4 fraction.

The invention relates to a nickel-based catalyst for preparing butane-1 by butane-2 hydroisomerization, and mainly solves the technical problems of low equilibrium conversion rate and high olefin hydrogenation rate of butane-2 hydroisomerization catalyst butane-1 in the prior art. By adopting the technical proposal that the nickel-based catalyst for preparing the butane-1 by the butane-2 hydroisomerization comprises the following components in percentage by weight: (a) 5.0 to 40.0 percent of metal nickel or oxides thereof, (b) 0.01 to 6.0 percent of at least one element or oxides thereof selected from rare earth, (c) 0.01 to 2.0 percent of at least one element or oxides thereof selected from IA or IIA in the periodic table of elements, (d) 0 to 12.0 percent of at least one element or oxides thereof selected from silicon, phosphorus, boron or fluorine, (e) 0 to 10.0 percent of at least one element or oxides thereof selected from IVB in the periodic table of elements, and (f) the balance being aluminum oxide carrier; and the nickel-based catalyst the solves the problems well, and can be used in the industrial production of the butane-1 prepared by cracking C4 or butane-2 component rich in refinery C4.

The invention discloses light-hydrocarbon isomerization catalyst and a method for preparing the light-hydrocarbon isomerization catalyst. Resin ribbon ball-shaped active carbon having high specific surface area and a micro-hole structure serves as the carrier, is roasted under high temperature and is activated through hydrogen fluoride to obtain a carrier with high specific surface area and a mesoporous structure, palladium loading is then carried out according to a liquid phase deposition method, and modifying is carried out through fluorine-containing chlorides at the same time to obtain the light-hydrocarbon isomerization catalyst. The light-hydrocarbon isomerization catalyst has extremely large specific surface area and a proper hole structure, and has good isomerization performance after modifying is carried out through the fluorine-containing chlorides. High activity of the light-hydrocarbon isomerization catalyst can still be kept after long-period operation and the light-hydrocarbon isomerization catalyst is long in service life.

The invention provides a catalyst for hydrogenation conversion of Fischer-Tropsch synthetic wax and a preparation method and application thereof. The catalyst comprises the following components: Ni, Whydrogenation metal, a Y-type molecular sieve, an isomerization molecular sieve and aluminum oxide; the preparation method of the catalyst comprises the following steps: firstly, mixing and pulping aluminum oxide and water, and then sequentially adding a USY molecular sieve and a Ni metal compound to form a mixture; secondly, putting the mixture into a closed reaction kettle for dynamic hydrothermal treatment; thirdly, after treatment, adding an isomerization molecular sieve, fully stirring, filtering, drying, adding dilute nitric acid, performing extrusion molding, and roasting; and finally,impregnating the W metallide by adopting an equivalent-volume impregnation method, drying and roasting to finally obtain the hydrocracking catalyst. The hydrocracking catalyst prepared by the methodprovided by the invention has appropriate acid properties, pore properties and metal dispersibility, can effectively reduce the secondary cracking performance in the hydrocracking process of Fischer-Tropsch synthetic wax, and improves the yield and product properties of light fuel oil.

The invention discloses a vitamin A isomerization method. The method comprises the steps of (1) controlling the content of vitamin dimers in VA crude oil containing 11-cis-vitamin A and 9-cis-vitamin A to be 0.001-0.02%; and 2) carrying out an isomerization reaction on the VA crude oil obtained in the step 1) under the action of a homogeneous metal catalyst to generate the all-trans vitamin A. According to the method, 11-cis-vitamin A and 9-cis-vitamin A in the VA crude oil can be isomerized into all-trans vitamin A efficiently at the same time, and the conversion rate of the total cis-vitamin A is high.

The invention relates to a naphtha reforming catalyst. The naphtha reforming catalyst comprises a complex carrier and the following active ingredients in percentage by mass (based on the carrier): 0.04-3.0% of platinum, 0.04-5.0% of VII group B metal and 0.5-5.0% of halogen; the complex carrier contains the ingredients in percentage by mass: 0-80% of gamma-alumina and 20-100% of mesoporous gamma-alumina; and a preparation method for the mesoporous gamma-alumina comprises the steps of mixing a template agent, fatty alcohol, inorganic acid and an aluminum source compound, carrying out a full reaction at the pH value of 1 to 7 and the temperature of 1 DEG C to 100 DEG C, drying a reaction product, carrying out roasting for 2 to 12 hours at the temperature of 300 DEG C to 600 DEG C so as to obtain amorphous mesoporous alumina, then, dipping the amorphous mesoporous alumina by a platiniferous compound solution, drying solids, and then, carrying out roasting at the temperature of 300 DEG C to 700 DEG C, wherein the template agent is a polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer, the mole ratio of the template agent to the aluminum source compound is 1: (1 to 200), and the mole ratio of the fatty alcohol to the aluminum source compound is (20 to 100): 1. The catalyst has relatively high selectivity of isomerization and aromatization.

The invention relates to an alkyl aromatic hydrocarbon non-hydroisomerization catalyst as well as a preparation method and application thereof. The quaternary ammonium salt with the molecular size larger than the pore size of the molecular sieve is adopted for conducting ion exchange on the Na-type molecular sieve used by the catalyst, and the prepared catalyst can be used for alkyl aromatic hydrocarbon liquid-phase non-hydroisomerization reaction and has the advantages of being high in isomerization activity, high in para-alkyl aromatic hydrocarbon selectivity and capable of saving energy consumption.

The invention discloses an alkylation raw material selective hydrogenation catalyst and a preparation method thereof and belongs to the technical field of hydrogenation catalysts. The catalyst is characterized by comprising the following components in percentage by weight: 0.2%-0.3% of Pd, 1.0%-5.0% of titanium dioxide and the balance of sepiolite and auxiliary agents. The preparation method comprises the following steps: preparing sepiolite, crushing, soaking, removing scum, filtering, drying; adding meta-titanic acid powder accounting for 4-6% of the mass of the sepiolite into the dried sepiolite, crushing the sepiolite and the meta-titanic acid powder together until the particle size is smaller than 160 meshes, performing roasting modification for 6-8 hours at the roasting temperature of 400-500 DEG C to obtain modified sepiolite; adding the modified sepiolite, extruding into strips, airing, roasting to obtain a catalyst carrier; preparing a PdCl2 solution, carrying out isopyknic impregnation on the PdCl2 solution and the carrier obtained in the step (3), carrying out draining, and carrying out roasting so as to obtain the finished catalyst. The selective hydrogenation catalysthas catalytic activity equivalent to that of a noble metal catalyst, is low in cost, and also has very high 1-butene isomerization activity.

The invention discloses an isomerization catalyst containing modified mordenite and an application thereof. The catalyst is prepared from the following components in percentage by weight: 0.01-5% of noble metal element in the group VIII, 10-80% of phosphorus-modified mordenite, 0.1-10% of additives and the balance of binder containing 0.5-5.0% of halogen, wherein the weight of phosphorus in the modified mordenite accounts for 0.1-10%. The catalyst is used for the isomerization of C4-C12 alkane, has the characteristics of high catalytic activity and high isoolefine selectivity and can be used for producing the high-octane gasoline blending component.

The invention relates to a supported metal catalyst for olefin isomerization reaction and a preparation method thereof. The catalyst comprises a molecular sieve and a supported metal supported on the molecular sieve, and the silica-alumina ratio of the catalyst is (200-2000): 1; the specific surface area is greater than or equal to 500 m < 2 >/g; the loaded metal is selected from one or more of magnesium, calcium, barium, scandium, titanium, vanadium, chromium, nickel, copper and zinc; the content of the loaded metal is 0.1-5wt%, and the oxide of the loaded metal is calculated and the dry basis weight of the molecular sieve is taken as a reference; the proportion of the mesopore volume of the catalyst to the total pore volume is more than or equal to 60 vol%, the mesopore volume and the total pore volume of the molecular sieve are measured by adopting a nitrogen adsorption BET specific surface area method, and the pore diameter range of the mesopore volume is more than 2 nanometers and less than 100 nanometers.