Abstract: A method is disclosed for modifying an aluminosilicate-containing inorganic solid having a predetermined ion exchange capacity and containing an extractable silica by contacting, in the absence of added organic nitrogen or organic phosphorous compound and added activating metal oxide, the porous solid with liquid water at a pH of at least 6, at a temperature of up to 370.degree. C. for about 1 to 100 hours, and recovering a crystalline solid having an ion exchange capacity greater than the starting inorganic solid.

Abstract: This invention relates to acid catalysis, e.g. cracking, of organic compound feedstock, e.g. hydrocarbons, over catalyst material treated in a special way for increasing the acid catalytic activity thereof. In particular, a novel catalyst activation process is followed to enhance the alpha value of high-silica zeolite catalyst by contact with an ammoniacal solution of ammonium hydroxide and an alkali metal aluminate under appropriate conditions of time, temperature of pH.

Abstract: A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalytic activity for conversion of paraffins and/or olefins to higher hydrocarbons is provided.

Abstract: An ethanol fermentation process in which an aqueous solution of fermentable sugar is converted by an ethanol-producing microorganism such as a yeast to a dilute aqueous solution of ethanol with the ethanol being present in the solution at a concentration which does not exceed a predetermined maximum level, wherein ethanol present in the solution is selectively sorbed within a crystalline aluminosilicate zeolite so that the non-sorbed ethanol present in the solution does not exceed the predetermined maximum level of concentration therein, and thereafter exposing the ethanol-containing zeolite to ethanol conversion conditions to effect conversion of the ethanol to hydrocarbons.

Abstract: Heat-damaged ZSM-5 type catalysts are reclaimed by hydrothermal treatment with an aqueous medium followed by base exchange with an ammonium salt.

Abstract: Natural and synthetic micorporous crystalline minerals that have a robust three-dimensional framework are modified by treatment with a molten salt that contains a component that reacts with the framework. Highly siliceous ZSM-5 and some aluminum phosphate compositions are catalytically activated by this method.

Abstract: The ion-exchange capacity and acid catalytic activity of a ZSM-5 type zeolite are increased by treatment of a physical mixture of the zeolite and an inorganic oxide with water in the presence of an alkali metal cation.Specifically, the catalyst is prepared by contacting a mixture of a crystalline zeolite having a silica to alumina ratio above 12 and a Constraint Index between about 1 and about 12, and a solid source of aluminum with liquid water in the presence of an activating amount of an alkali metal cation and under a combination of conditions including a temperature up to about 370.degree. C. for less than about an hour to about 100 hours to induce increased activity to the zeolite.

Abstract: Feedstock comprising aromatic compounds is converted to product comprising aromatic compounds which differs from the feedstock over a catalyst which comprises a particular crystalline material which has been treated to increase the total amount of lattice metal in its framework. Examples of the conversion include alkylation, disproportionation, isomerization and transalkylation.

Abstract: A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalytic activity for conversion of oxygenates to hydrocarbons is provided.

Abstract: Feedstock comprising xylene isomers is converted to isomerization product by the present process over catalyst prepared by a method for substituting aluminum or gallium for boron or iron contained in the framework of a high silica content zeolite.

Abstract: A method for increasing the total amount of lattice metal in the framework of a particular porous inorganic crystalline composition, its conversion to hydrogen or hydronium form and use thereof as a catalyst component having enhanced catalyatic activity is provided.

Abstract: Substitution of aluminum or gallium for boron or iron contained in the framework of a high silica content zeolite is effected by treating the zeolite in liquid water in the presence of a compound of aluminum or gallium. Catalyst comprising the treated zeolite is used for conducting acid-catalyzed reactions of organic compounds, e.g. cracking of hydrocarbon compounds.

Abstract: This invention relates to acid catalysis of organic compound feedstock, e.g. isomerization of xylenes, over catalyst material treated in a special way for increasing the acid catalytic activity thereof. In particular, a novel catalyst activation process is followed to enhance the alpha value of high-silica zeolite catalyst by contact with an ammoniacal solution of an alkali metal aluminate under appropriate conditions of time, temperature and pH.

Abstract: This invention relates to acid catalysis of organic compound feedstock, e.g. conversion of olefins and/or paraffins to higher hydrocarbons, over catalyst material treated in a special way for increasing the acid catalytic activity thereof. In particular, a novel catalyst activation process is followed to enhance the alpha value of high-silica zeolite catalyst by contact with an ammoniacal solution of an alkali metal aluminate under appropriate conditions of time, temperature and pH.

Abstract: There is provided a process for activating a zeolite with an aluminum phosphate material. The process comprises hydrothermally treating an intimate mixture of the zeolite and an effective amount of aluminum phosphate activating agent in contact with an aqueous liquid phase under reaction conditions to increase the cracking activity of the mixture. Examples of zeolites which may be activated include low acidity zeolites such as boron-containing ZSM-5, boron-containing zeolite Beta and high silica ZSM-5. The aluminum phosphate may be in the form of a microporous, crystalline framework material such as AlPO.sub.4 -5.

Abstract: This invention relates to acid catalysis of organic compound feedstock, e.g. conversion of oxygenates to hydrocarbons, over catalyst material treated in a special way for increasing the acid catalytic activity thereof. In particular, a novel catalyst activation process is followed to enhance the alpha value of high-silica zeolite catalyst by contact with an ammoniacal solution of an alkali metal aluminate under appropriate conditions of time, temperature and pH.

Abstract: Substitution of aluminum or gallium for boron or iron contained in the framework of a high silica content zeolite is effected by treating the zeolite in liquid water in the presence of a compound of aluminum or gallium. Catalyst comprising the treated zeolite is used for conducting acid-catalyzed reactions of organic compounds, e.g. conversion of oxygenates to hydrocarbons.

Abstract: Substitution of aluminum or gallium for boron or iron contained in the framework of a high silica content zeolite is effected by treating the zeolite in liquid water in the presence of a compound of aluminum or gallium. Catalyst comprising the treated zeolite is used for conducting acid-catalyzed reactions of organic compounds, e.g. olefin/paraffin conversion.

Abstract: A method for enhancing the activity of a synthetic crystalline zeolite, including a zeolite having a silica-to-alumina ratio greater than 500, is disclosed which involves compositing the zeolite with an alumina support matrix and reacting the composite with a concentrated aqueous solution of an ammonium halide preferably ammonium fluoride. The halide treated zeolite subsequently is contacted with an ammonium salt such as ammonium nitrate and subsequently is calcined.

Abstract: There is provided a method for preparing a microporous crystalline aluminum phosphate with a urea templating agent. Also provided are microporous, crystalline aluminum phosphates having characteristic structures.