发明名称 |
Two stage process for improving the catalyst life of zeolites in the synthesis of lower olefins from alcohols and their ether derivatives |
摘要 |
A process for improving the catalyst life of zeolites employed in the conversion of alcohols (e.g. methanol) and/or their ether derivatives (e.g., dimethyl ether) wherein a suitable zeolite is modified in a 2-stage procedure by providing a controlled low amount of a coke precursor deposit on the external surface of the zeolite, and then heating this treated zeolite in an inert gas at specifically controlled temperatures for a minimum time is disclosed. A process of employing this modified zeolite to produce lower olefins is also disclosed.
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申请公布号 |
US4554260(A) |
申请公布日期 |
1985.11.19 |
申请号 |
US19840630636 |
申请日期 |
1984.07.13 |
申请人 |
EXXON RESEARCH & ENGINEERING CO. |
发明人 |
PIETERS, WIM J. M.;OKUMURA, YOSHIHARU |
分类号 |
C07C1/24;B01J29/40;B01J29/87;C07B61/00;C07C1/00;C07C1/20;C07C11/02;C07C67/00;(IPC1-7):B01J29/28 |
主分类号 |
C07C1/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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