Abstract: A catalyst, having a specified amount of rare earth metal content and a specified amount of alkali metal content, suitable for conversion of hydrocarbon oils to lower boiling products comprises a crystalline aluminosilicate zeolite, such as zeolite Y, an inorganic oxide matrix and, optionally discrete particles of alumina dispersed in the matrix. The zeolite prior to being composited with the matrix has a unit cell size above about 24.5 Angstroms. A cracking process utilizing the catalyst is also provided.

Abstract: A catalyst, having a specified amount of rare earth metal content and a specified amount of alkali metal content, suitable for conversion of hydrocarbon oils to lower boiling products comprises a crystalline aluminosilicate zeolite, such as zeolite Y, an inorganic oxide matrix and, optionally discrete particles of alumina dispersed in the matrix. The zeolite prior to being composited with the matrix has a unit cell size above about 24.5 Angstroms. A cracking process utilizing the catalyst is also provided.

Abstract: A cracking catalyst comprising discrete particles of ultra-stable Y-type zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt. % ultra-stable Y-type zeolite, 5-40 wt. % alumina and 40-90 wt. % of porous oxide matrix. The cracking catalyst has unusually high activity and selectivity for the production of high octane gasoline fractions from higher boiling point feedstocks.

Abstract: A method for the removal of CO from flue gas which comprises contacting a spent noble metal reforming catalyst with flue gas from a cat cracker regenerator at 1000.degree.-1350.degree. F. to effectively oxidize CO to CO.sub.2. The spent catalyst while no longer efficient in a reforming process is found to be effective in reducing the CO level to a concentration range of 5000 parts per million and less.

Abstract: A hydrocarbon conversion catalyst suitable for conversion of heavy hydrocarbon oils containing large amounts of metallic contaminants, such as petroleum residua, to lower boiling products comprises a porous inorganic oxide such as bulk alumina composited with an inorganic oxide gel matrix such as silica-alumina, and a crystalline aluminosilicate zeolite.

Abstract: A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline ZSM-type zeolite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.

Abstract: A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline zeolite such as mordenite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.

Abstract: A hydrocarbon conversion catalyst suitable for converion of heavy hydrocarbon oils containing large amounts of metallic contaminants, such as petroleum residua, to lower boiling products comprises a porous inorganic oxide such as bulk alumina composited with an inorganic oxide gel matrix such as silica-alumina, and a crystalline aluminosilicate zeolite.

Abstract: A cracking catalyst comprising discrete particles of ultra-stable Y-type zeolite and discrete particles of alumina, which particles are dispersed in a porous oxide matrix to produce a catalyst containing 5-40 wt. % ultra-stable Y-type zeolite, 5-40 wt. % alumina and 40-90 wt. % of porous oxide matrix. The cracking catalyst has unusually high activity and selectivity for the production of high octane gasoline fractions from higher boiling point feedstocks.

Abstract: An improved catalyst, and process utilizing said catalyst for catalytically cracking a sulfur-containing hydrocarbon feed, and for the fixation of sulfur by the catalyst and transfer thereof from the catalyst regeneration zone to the reaction zone of a catalytic cracking unit. The catalyst comprises an admixture of composite particles, one present in major concentration for providing principally cracking and combustion promoting functions, and the other present in minor concentration for providing principally sulfur fixation and transfer functions. The particle present in major concentration, on the one hand, is constituted essentially of one or more Group VIII noble metals, preferably platinum, composited with a support comprised of a crystalline alumino silicate component distributed in an active cracking catalyst matrix, suitably one constituted of silica-alumina.

Abstract: A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline zeolite such as mordenite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.

Abstract: An improved catalyst, and process utilizing said catalyst for catalytically cracking a sulfur-containing hydrocarbon feed, and for the fixation of sulfur by the catalyst and transfer thereof from the catalyst regeneration zone to the reaction zone of a catalytic cracking unit. The catalyst comprises an admixture of composite particles, one present in major concentration for providing principally cracking and combustion promoting functions, and the other present in minor concentration for providing principally sulfur fixation and transfer functions. The particle present in major concentration, on the one hand, is constituted essentially of one of more Group VIII noble metals, preferably platinum, composited with a support comprised of a crystalline alumino silicate component distributed in an active cracking catalyst matrix, suitably one constituted of silica-alumina.

Abstract: A hydrocarbon cracking catalyst comprises an ultrastable Y-type crystalline zeolite, a small pore crystalline ZSM-type zeolite, an inorganic oxide matrix and, optionally, a porous inert component. The cracking catalyst has a high activity and selectivity for the production of high octane naphtha fractions from higher boiling point hydrocarbonaceous oils. Catalytic cracking processes utilizing the catalyst are also provided.

Abstract: A perovskite is added to a conventional hydrocarbon cracking catalyst comprising a zeolite and an inorganic oxide gel matrix. The perovskite is present in said catalyst in an amount up to about 10 weight percent based on the total catalyst.

Abstract: The octane number of a cracked naphtha can be significantly improved in a catalytic cracking unit, without significant decrease in naphtha yield, by maintaining certain critical concentrations of metals on the catalyst, suitably by blending or adding a heavy metals-containing component to the gas oil feed.

Abstract: A catalyst suitable for treating hydrocarbons comprising (1) particles of a crystalline aluminosilicate zeolite, (2) particles of a substantially catalytically inert inorganic oxide having a size of less than 10 microns in diameter, and (3) a catalytic inorganic oxide gel matrix.

Abstract: A perovskite is added to a conventional hydrocarbon cracking catalyst comprising a zeolite and an inorganic oxide gel matrix. The perovskite is present in said catalyst in an amount up to about 10 weight percent based on the total catalyst.

Abstract: A cracking catalyst for promoting the oxidation of carbon monoxide to carbon dioxide during regeneration of the catalyst by the burning of coke therefrom, comprises two distinct crystalline aluminosilicate zeolite particles embedded in an inorganic porous oxide matrix material. The first zeolite is the ultra-stable variety of Y-type zeolite which contains a CO oxidation promoter, such as a Group VIII metal or compound thereof. The second zeolite is a rare earth metal-containing zeolite. A preferred catalyst comprises an ultra-stable Y-type zeolite containing Pt and/or Pd and a rare earth metal exchanged X- or Y-type zeolite, which zeolites are embedded in a silica-alumina or clay matrix.

Abstract: A hydrocarbon conversion catalyst suitable for the conversion of heavy hydrocarbon oils containing large amounts of metallic contaminants, such as petroleum residua, comprises an inorganic oxide gel matrix comprising a major amount of silica and minor amounts of zirconia and alumina, from about 15 to about 40 weight percent of an adsorbent such as bulk alumina, and a crystalline aluminosilicate zeolite.

Abstract: A cracking catalyst for promoting the oxidation of carbon monoxide to carbon dioxide during regeneration of the catalyst by the burning of coke therefrom, which comprises a crystalline aluminosilicate zeolite, an inorganic porous oxide matrix material and a CO oxidation promoter, such as a Group VIII metal or compound thereof. The catalyst is preferably prepared by first supporting the CO oxidation promoter on an inorganic porous oxide base, such as alumina, and thereafter embedding the supported CO oxidation promoter and a crystalline aluminosilicate zeolite, such as rare earth metal exchanged Y-type zeolite, in an inorganic porous oxide matrix material, such as silica-alumina.