04296266 is referenced by 15 patents and cites 4 patents.

Olefins having from 2 to 4 carbon atoms are manufactured from methanol and/or dimethyl ether in the presence of water and a manganese-containing aluminum silicate catalyst. Before or after application of the manganese, the aluminum silicate is washed with a solution of ethylene-diaminetetraacetic acid or tartaric acid adjusted to a pH of from 3 to 7 by means of a base.

Title
Process for the manufacture of lower olefins from methanol/water mixtures
Application Number
6/169629
Publication Number
4296266
Application Date
July 16, 1980
Publication Date
October 20, 1981
Inventor
Hans Joachim Schmidt
Konigstein
DE
Horst Hachenberg
Walluf
DE
Ernst I Leupold
Neu-Anspach
DE
Friedrich Wunder
Florsheim am Main
DE
Agent
Curtis Morris & Safford
Assignee
Hoechst Aktiengesellschaft
DE
IPC
C07C 1/24
C07C 1/00
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