Abstract: A crystalline high silica-containing zeolite, such as ZSM-5, is hydrothermally treated with aluminate ion to enhance the catalytic activity.

Abstract: A method of preparing a zeolite ZSM-12 type crystal which comprises crystallizing substantially pure ZSM-12 from a silica and optimally alumina gel mixture in the presence of a methyltriethylammonium cation, and the ZSM-12 product produced thereby.

Abstract: A new porous silico-crystal, designated as ZSM-48, a method of making same and the use thereof in catalytic conversion of organic compounds. The new product has a composition, expressed in terms of moles of anhydrous oxides per 100 moles of silica as follows:(0.05 to 5) N.sub.2 O:(0.1 to 10)M.sub.2 /.sub.n O:(0 to 4) Al.sub.2 O.sub.3 :(100) SiO.sub.2wherein M is at least one cation having a valence n, N is a mixture of C.sub.2 -C.sub.12 alkylamine and more preferably of C.sub.3 -C.sub.5 tetramethyl ammonium compound, and wherein the zeolite is characterized by the distinctive x-ray powder diffraction pattern shown in Table I.

Abstract: A method of removing the organic cation from an organic cation-containing zeolite which comprises contacting the zeolite at low temperatures with an aqueous sodium hypochlorite solution.

Abstract: A method for selectively sorbing Group V-B element hydrides and derivatives thereof from an aqueous solution containing same which comprises contacting said solution under ion-exchange conditions with a crystalline zeolite material having a pore dimension greater than about 5 Angstroms, a Constraint Index between 1 and 12 and a SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio greater than 12.

Abstract: A new porous silico-crystal, designated as ZSM-48, a method of making same and the use thereof in catalytic conversion of organic compounds. The new product has a composition, expressed in terms of moles of anhydrous oxides per 100 moles of silica as follows:(0.05 to 5) N.sub.2 O: (0.1 to 10)M.sub.2 /.sub.n O: (0 to 4)Al.sub.2 O.sub.3 : (100)SiO.sub.2wherein M is at least one cation having a valence n, N is a mixture of C.sub.2 -C.sub.12 alkylamine and more preferably of C.sub.3 -C.sub.5 tetramethyl ammonium compound, and wherein the zeolite is characterized by the distinctive X-ray powder diffraction pattern shown in Table I.

Abstract: The invention provides a method of making large crystallite zeolites by a method comprising forming the zeolite in a medium containing a combination of two different alkylammonium cations or a combination of an alkylammonium cation and a metallic cation. In the combination at least one of the cations will have an ionic radius of from about 1.40 to the pore size of the specific zeolite.

Abstract: A method of removing the organic cation from an organic cation-containing zeolite which comprises contacting the zeolite at low temperatures with an aqueous solution of a compound of a class of chemical treating agents that will improve the dispersive and catalytic properties of the zeolite.

Abstract: A catalytic process is provided for converting gaseous paraffinic feedstocks containing ethane to liquid aromatics by contacting said gaseous feeds, in the absence of added air or oxygen, under conversion conditions, with a crystalline aluminosilicate zeolite catalyst having incorporated therein a minor amount of a metal selected from Groups VIII, IIB and IB of the Periodic Table and mixtures thereof thereby converting ethane in said feed to aromatics and recovering said aromatics as liquids.