摘要:
Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum group component, a zinc component, a cobalt component, and a halogen component with a porous carrier material. The platinum group, zinc, cobalt, and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % zinc, about 0.05 to about 5 wt. % cobalt, and about 0.1 to about 3.5 wt. % halogen. These metallic components are uniformly dispersed throughout the porous carrier material in carefully controlled oxidation states such that substantially all of the platinum group metal is present therein in the elemental metallic state, substantially all of the catalytically available cobalt component is present in the elemental metallic state or in a state which is reducible to the elemental metallic state under hydrocarbon conversion conditions, or in a mixture of these states, while substantially all of the zinc is preferably present therein in an oxidation state above that of the elemental metal.
摘要:
Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a platinum or palladium component, a rhodium component, a rhenium component, a germanium component, and a halogen component with a porous carrier material. The platinum or palladium, rhodium, rhenium, germanium, and halogen components are present in the multimetallic catalyst in amounts respectively, calculated on a finished catalyst and elemental basis, corresponding to about 0.01 to about 2 wt. % platinum or palladium metal, about 0.01 to about 2 wt. % rhodium, about 0.01 to about 2 wt. % rhenium, about 0.01 to about 5 wt. % germanium, and about 0.1 to about 3.5 wt. % halogen. Moreover, these metallic components are uniformly dispersed throughout the porous carrier material in carefully controlled oxidation states such that substantially all of the platinum or palladium, rhenium and rhodium components are present therein in the elemental metallic state, and substantially all of the germanium component is present in an oxidation state above that of the elemental metal.
摘要:
A novel superactive multimetallic hydrocarbon conversion catalytic composite comprises a combination of a catalytically effective amount of a pyrolyzed rhenium carbonyl component with a porous carrier material containing a uniform dispersion of a catalytically effective amount of a platinum group component which is maintained in the elemental metallic state. In a highly preferred embodiment, this novel catalytic composite also contains a catalytically effective amount of a halogen component. The platinum group component, pyrolyzed rhenium carbonyl component and optional halogen component are preferably present in the multimetallic catalytic composite in amounts, calculated on an elemental basis, corresponding to about 0.01 to about 2 wt. % platinum group metal, about 0.01 to about 5 wt. % rhenium and about 0.1 to about 3.5 wt. % halogen. A key feature associated with the preparation of the subject catalytic composite is reaction of a rhenium carbonyl complex with a porous carrier material containing a uniform dispersion of a platinum group metal maintained in the elemental state, whereby the interaction of the rhenium moiety with the platinum group moiety is maximized due to the platinophilic (i.e. platinum-seeking) propensities of the carbon monoxide ligand used in the rhenium reagent.
摘要:
A catalytically active composition is provided that is an intercalate of graphite, aluminum halide, and a Group VA metal halide. A process for preparing an intercalate of graphite, aluminum halide, and a Group VA metal halide is also provided.
摘要:
Metal oxyhalides of the general formula ABO.sub.3-f X.sub.f having perovskite-type crystal structures in which A and B are each cations of at least one metal and a portion of the type B cations are catalytically active; X is fluoride or chloride; and f is about from 0.01 to 1.0; useful for the promotion of oxidation and reduction reactions, including those involved in the cleanup of exhaust gases of internal combustion engines.
摘要翻译:具有其中A和B各自为至少一种金属的阳离子和B型阳离子的一部分的钙钛矿型晶体结构的通式ABO 3-f X f的金属卤氧化物具有催化活性; X是氟化物或氯化物; f约为0.01〜1.0; 可用于促进氧化还原反应,包括那些参与清理内燃机废气的工作。
摘要:
In a fluid catalytic cracking process for cracking hydrocarbons with a zeolitic cracking catalyst and in the absence of added hydrogen, the desired value of CO.sub.2 /CO in the flue gases from the regenerator is achieved by including in the catalyst a combustion-promoter metal such as platinum, palladium, rhodium, ruthenium, iridium, osmium or rhenium, and, additionally, contacting the catalyst with a metal-free chlorine or bromine compound.
摘要:
A process for hydrotreating (hydroprocessing) hydrocarbons and mixtures of hydrocarbons utilizing a catalytic composite comprising a combination of a nickel component and a tungsten component with a silica-alumina carrier material wherein said carrier material is co-gelled silica-alumina consisting of from about 43 percent to about 57 percent by weight of alumina and from about 57 percent to 43 percent by weight silica and wherein said components are present in amounts sufficient to result in the composite containing, on an elemental basis, about 2 to about 10 percent by weight of the nickel component and about 8 to about 20 percent by weight of the tungsten component, in which process there is effected a chemical consumption of hydrogen. Key features of the subject composite are the criticality of the alumina content of the carrier material and the facility of using a co-gelled silica-alumina carrier material. The principal utility of the subject composite is in the hydrocracking of hydrocarbons. A specific example of the catalyst disclosed is a combination of nickel and tungsten with a co-gelled silica-alumina carrier material containing 50 weight percent alumina in amounts sufficient to result in the composite containing, on an elemental basis, about 7 to about 9 weight percent nickel and about 17 to about 19 weight percent tungsten. Other hydrocarbon hydroprocesses are directed toward the hydrogenation of aromatic nuclei, the ring-opening of cyclic hydrocarbons, desulfurization, denitrification, hydrogenation, etc.
摘要:
Catalyst compositions comprising mixtures of salts of copper, potassium, didymium, lanthanum and magnesium are useful in the fluidized bed oxychlorination of aliphatic hydrocarbons. The catalyst composition loading is disposed on a suitable support media, preferably an alumina and does not cake or cause defluidization of the bed under start-up, operating, or shut-down conditions.
摘要:
4-Cyanothiazole is prepared by the catalytic vapor phase ammoxidation of .DELTA.3-4-methylthiazoline or 4-methylthiazole, using as catalyst a novel composition comprising a slurried chromium cobalt molybdate. The process affords high selectivity in the production of 4-cyanothiazole.
摘要:
A method of catalyst manufacture wherein a common non-aqueous solution of a soluble platinum group metal compound and a halo-substituted germane is utilized to impregnate a porous high surface area carrier material, the impregnated carrier material being subsequently dried and calcined. The method of manufacture results in an improved hydrocarbon conversion catalyst, particularly with respect to catalytic reforming.