Abstract:
Dehydrogenatable hydrocarbons are dehydrogenated by contacting them, under dehydrogenation conditions, with a dehydrogenation catalyst comprising a combination of catalytically effective amounts of an alkali or alkaline earth component with a catalytic composite consisting essentially of a tin component in combination with a platinum component on a carrier material, wherein the catalytic composite is prepared by the method which comprises: (a) impregnating a high surface area porous carrier material with a solution of a complex chlorostannate (II) chloroplatinate anionic species, the solution being stabilized in contact with the carrier material with an aqueous halogen acid; and thereafter, (b) drying and calcining the impregnated carrier material. For the dehydrogenation of normal paraffin hydrocarbons, this dehydrogenation catalyst preferably contains, on an elemental basis, about 0.01 to about 2 wt. % platinum, about 0.01 to about 5 wt. % tin and about 0.01 to about 5 wt. % alkali or alkaline earth metal.
Abstract:
Catalyst and process for hydrocarbon conversions, e.g., reforming. The catalyst contains an alumina carrier, platinum, iridium, at least one metal selected from uranium, vanadium and gallium, and optionally halogen in the form of metal halide of one of the aforesaid components.
Abstract:
A catalyst composition, particularly adapted for use in the production of dichloropropionic acid is provided. The catalyst composition comprises elemental iodine, which may be combined with a phosphorous trihalide or with bis (dimethyl thio carbamoyl) disulfide or with both. The catalyst composition makes possible the production of 2,2-dichloropropionic acid by direct chlorination of propionic acid, with substantially higher yields not heretofore obtainable in the production of 2,2dichloropropionic acid by direct chlorination of propionic acid.
Abstract:
A method for reforming hydrocarbons which gives various advantages such as higher yield of aromatics, higher concentration of aromatics during the reforming operation, products of higher octane value, lower catalyst cost, etc. is given by using a catalyst containing 0.01 - 2 percent by weight of platinum and 0.01 - 5 percent by weight of lead as essential components and 0.01 - 5 percent by weight of an optional third component, the weight ratio of lead to platinum in the catalyst being 0.1 - 3:1, and the preparation of the catalyst comprising impregnating a carrier with a hydrochloric acid solution of a platinum compound, a solution of a lead compound and a solution of a compound corresponding to the optional third component, in any order, and calcining the resulting impregnated mass at a temperature of 570* - 1470*F. Alternatively, said lead component or third component can be supported on a carrier by coprecipitating or co-gelating a compound corresponding to the component and a compound corresponding to the carrier.
Abstract:
A novel fluorination catalyst and its preparation, by reacting a hydrated oxide of trivalent chromium with hydrogen fluoride, is described as having utility in fluorinating halogenated aliphatic hydrocarbon.