| 摘要 |
1. A process for the preparation of C2 -C5 -olefins from crude methanol and/or dimethyl ether by catalytic conversion at an elevated temperature in the presence of a zeolite-containing catalyst, characterized in that undiluted crude methanol and/or undiluted dimethyl ether is used as the starting material, and those zeolite-containing catalysts are used, the zeolite proportion of which has been prepared from technical-grade waterglass with the aid of hexamethylenediamine, without addition of a metal salt, and that the throughput is adjusted to from 2 to 50 g/g of zeolite/hr. |
