A process for the production of aromatic hydrocarbons which process comprises contacting at elevated temperature and in the vapor phase a C.sub.2 to C.sub.12 aliphatic hydrocarbon feedstock with a catalyst comprising a crystalline aluminosilicate having a silica to alumina molar ratio greater than 12:1 which has been modified by incorporation therein of aluminium either by exchange or impregnation.
The instant process relates to a process for treating fluoride-containing catalysts or aluminosilicates which contain insoluble fluoride compounds by the use of soluble aluminum compounds.
A process for the production of gasoline from a light hydrocarbon feed. The feed is catalytically aromatized to produce an effluent containing aromatics and olefins with the aromatics and olefins being subjected to alkylation to produce a gasoline product with a higher octane rating.
An improved process is described for converting propane to more valuable hydrocarbons such as butanes and C.sub.5.sup.+ aliphatics over an acidic catalyst having the structure of ZSM-5 by adding a mono- olefin to the propane feed.
A process for the alkylation/transalkylation of benzene is improved by the use of a catalyst prepared by exchanging a sodium Y zeolite with an ammonium salt to replace from about 40 percent to about 90 percent of the sodium ions with ammonium ions; calcining the resulting ammonium-sodium zeolite in steam under conditions sufficient to reduce the unit cell size to about 24.48 to 24.60 angstroms; contacting the calcined catalyst with a rare earth salt and an aluminum salt either simultaneously or sequentially; and calcining the catalyst a second time in the absence of steam.
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.
