Abstract: Zeolite Y and other faujasite type zeolites are made stable to acid by calcination in a steam-containing atmosphere with a slow, controlled heating rate in the temperature range at which chemically bound water in the zeolite is given off, generally from 500.degree. C. to 650.degree. C. The stabilized product may be extracted with acid to produce a zeolite having a higher silica:alumina ratio. The high silica forms of zeolite ZSM-20 which may be produced by this method are novel materials.

Abstract: A process is provided for converting feedstock comprising aromatic compounds to product comprising aromatic compounds which differs from the feedstock over catalyst prepared by a method for reactivating a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam. The catalyst preparation method involves contacting said steam-deactivated catalyst composition with an aluminum compound at elevated temperature, and contacting said aluminum compound contacted catalyst composition with an aqueous acid solution.

Abstract: A process is provided for converting oxygenates to hydrocarbons over catalyst prepared by a method for reactivating a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam. The catalyst preparation method involves contacting said steam-deactivated catalyst composition with an aluminum compound at elevated temperature, and contacting said aluminum compound contacted catalyst composition with an aqueous acid solution.

Abstract: A process is provided for converting feedstock aromatic compounds by alkylation, transalkylation, disproportionation and/or isomerization over a catalyst comprising a high silica crystalline zeolite which has been treated by contact with aluminum chloride vapor.

Abstract: A process is provided for converting feedstock comprising oxygenates to product comprising hydrocarbons over a catalyst comprising a high silica crystalline zeolite which has been treated by contact with aluminum chloride vapor.

Abstract: A process is provided for conducting organic compound conversion over a catalyst comprising a high silica crystalline zeolite which has been treated by contact with aluminum chloride vapor.

Abstract: Conversion, e.g. dehydration of aliphatic organic oxygenates having up to about 6 carbon atoms by contact with a crystalline aluminosilicate zeolite, preferably ZSM-5, having a silica to alumina ratio substantially greater than 10, at a temperature of about 70.degree. to 1400.degree. F., depending upon the exact nature of the reactant and product.

Abstract: A process is provided for reactivating a catalyst composition comprising a crystalline zeolite material having a silicon/aluminum atomic ratio of at least about 2, said catalyst composition having been deactivated by contact with steam. The method involves contacting said steam-deactivated catalyst composition with an aluminum compound at elevated temperature, and contacting said aluminum compound contacted catalyst composition with an aqueous acid solution.

Abstract: A method for enhancing the activity of high silica zeolites, i.e. having a silica-to-alumina ratio greater than 100 which have been synthesized from a reaction mixture containing tetraalkylammonium ions is disclosed which involves calcining the as synthesized zeolites, treatment of the same with aluminum chloride, followed by hydrolysis and calcination in order to obtain materials having an enhanced activity.

Abstract: Conversion, e.g. dehydration of aliphatic organic oxygenates having up to about 6 carbon atoms by contact with a crystalline aluminosilicate zeolite, preferably ZSM-5, having a silica to alumina ratio substantially greater than 10, at a temperature of about 70.degree. to 1400.degree. F., depending upon the exact nature of the reactant and product.

Abstract: Conversion, e.g. dehydration of aliphatic organic oxygenates having up to about 6 carbon atoms by contact with a crystalline aluminosilicate zeolite, preferably ZSM-5, having a silica to alumina ratio substantially greater than 10, at a temperature of about 70.degree. to 1400.degree. F., depending upon the exact nature of the reactant and product.

Abstract: A method is provided for obtaining crystalline dealuminized products by treating a slurry of a crystalline aluminosilicate zeolite in an aqueous solution of an ammonium or alkali metal salt which upon acidification yields an anion which complexes with aluminum by adding to said slurry a water-soluble acid having a first ionization constant greater than 10.sup.-2 at a rate such that a controlled amount of aluminum is removed from the zeolite to yield a resulting product from which at least about 10% and as much as about 85% of the initial aluminum has been removed while retaining more than 60% of the original crystallinity.

Abstract: This invention relates to reactions of beta platinum chloride with gaseous ammonia to yield metallic platinum useful in catalysis and other operations and also complexes of beta platinum chloride and ammonia, which complexes are considered to be new compositions and which are contemplated as being useful in cancer research.

Abstract: This invention relates to reactions of beta platinum chloride with gaseous ammonia to yield metallic platinum useful in catalysis and other operations and also complexes of beta platinum chloride and ammonia, which complexes are considered to be new compositions and which are contemplated as being useful in cancer research.

Abstract: Synthetic crystalline aluminosilicate zeolites are crystallized from an aqueous reaction mixture comprising sources of alkali metal oxide, silicate, aluminate and an ionene or ionomer which contains positively charged nitrogen atoms in such quantity as to satisfy some of the cationic sites of the eventual zeolite. The presence in the reaction mixture of such a polymer serves to direct crystallization of the zeolite, giving rise to the formation of large pore zeolites under conditions where small pore zeolites would otherwise result, to the formation of more siliceous zeolite than would otherwise result, and to the formation of certain species of zeolite essentially free of stacking faults, the crystallization of which has not heretofore been possible.

Abstract: Conversion, e.g. dehydration, of aliphatic organic oxygenates having up to about 6 carbon atoms by contact with a crystalline aluminosilicate zeolite, preferably ZSM-5, having a silica to alumina ratio substantially greater than 10, at a temperature of about 70.degree. to 1400.degree. F, depending upon the exact nature of the reactant and product.