Preparation of zeolites and use of these zeolites as catalysts

Details Preparation of zeolites and use of these zeolites as catalysts Preparation of zeolites and use of these zeolites as catalysts

B - Operations, Transporting

01

J

252/12

B01J 29/40 (2006.01) C07C 1/20 (2006.01)

Patent

CA 1166233

O.Z.0050/034495 Abstract of the disclosure: A process for the prepara- tion of zeolites of the ZSM-5 structural type from a mixture of SiO2 and Al(OH)3 by hydrothermal crystal- lization in an aqueous amine solution, in the absence of alkali, at from 100 to 200°C, wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formu- lated to have an SiO2/Al2O3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H2O/amine and amine/Al2O3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics.

378497

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