Novel molecular sieves, being montmorillonites cross-linked with aluminum hydroxide or with chromium hydroxide and a process for the production of same comprising interaction between montmorillonite, in the form of a colloidal solution containing fully separated unit layers (reactant A), and a cross-linking agent, consisting of an accurately buffered and aged colloidal solution of a metal hydroxide, dispersed in the form of low molecular weight oligomers (reactant B).

Cross-linked montmorillonite molecular sieves

Novel types of molecular sieve cracking catalysts and method of preparation, the catalysts consisting of acidic forms of partially cross-linked smectites and including ions of hydrogen and rare-earth elements such as cerium, gadolinium, lanthanum, neodymium, praseodymium and samarium. In the catalyst preparation, the unit layer structure of the smectite is retained and the effective pore size obtained (8 A-30 A) is sufficiently large to accommodate molecules with a kinetic diameter greater than about 8 A.

Class of cracking catalysts acidic forms of cross-linked smectities

Catalysts which produce cracked gasoline having high octane rating are produced by combining a thermally-stabilized/aluminum exchanged type Y zeolite with an inorganic oxide matrix.

Catalytic cracking catalyst

A process for separating a component from a feed mixture comprising an aqueous solution of a mixture of different components, such as a mixture of saccharides, in which the mixture is contacted with an adsorbent comprising a crystalline aluminosilicate which selectively adsorbs a component from the feed mixture The adsorbed component is then recovered by contacting the adsorbent with a desorbent material such as water to effect the desorption of the adsorbed component from the adsorbent There is an undesirable tendency for the silicon constituent of the crystalline aluminosilicate to dissolve in the aqueous system The process comprises the impregnation of the crystalline aluminosilicate with aluminum cations which substantially reduces the undesirable dissolution

Technique to reduce the zeolite molecular sieve solubility in an aqueous system

Method of producing tertiary olefins from alkyl tert-alkyl ethers using a catalyst produced by calcining an aluminum compound supported on a carrier containing silicon oxides at a temperature above that at which the aluminum compound decomposes.

Production of tertiary olefins

THE DISCLOSURE PROVIDES A NOVEL CATALYST SUPPORT, A METHOD OF MAKING SAID SUPPORT BY TREATMENT OF PRIOR ART CRYSTALLINE CATALYST SUPPORT WITH HYDROXY-ALUMINUM SOLUTION AND HYDROCARBON CONVERSION PROCESSES WHEREIN THE CAATALYST USED THEREIN INCLUDES SAID SUPPORT.

Jaffe J

Papers

Novel catalyst support