Catalyst and process for preparation of alpha, beta-unsaturated

Details Catalyst and process for preparation of alpha, beta-unsaturated Catalyst and process for preparation of alpha, beta-unsaturated

1985-10-07

1986-12-23

Metz, Andrew H.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Silicon containing or process of making

502242, 502208, 502213, 502214, 562599, B01J 2108, B01J 2714, B01J 27185, B01J 27182

Patent

active

046312641

ABSTRACT:
Catalyst and process are disclosed for preparation of alpha, beta-unsaturated acids. Catalyst comprises a silica component and a Group IA alkali metal component which is present in an amount of from 200 to 15,000 parts per million, said silica component containing less than about 500 parts per million individually of aluminum, zirconium, titanium, iron and mixtures thereof. Process comprises reacting formaldehyde and a carboxylic acid of the formula RCH.sub.2 COOH wherein R is a member of the class consisting of -H, -alkyl, -aryl, -aralkyl, -cycloalkyl, and -alkylaryl radicals in the presence of said catalyst. Catalyst activity is maintained during process by addition of source of alkali metal component.

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Vapor Phase Aldol Reaction, Vitcha et al., I&EC Prod. Research and Development, vol. 5, No. 1, Mar. 1966, pp. 50-53.

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