发明名称 |
Toluene methylation process |
摘要 |
A method of preparing a xylene product is carried out in a reactor containing a phosphorus-treated ZSM-5-type zeolite catalyst. The method includes initiating a unique start-up of a toluene methylation reaction by contacting the catalyst with a toluene/methanol feed and a cofeed of hydrogen introduced into the reactor at certain start-up conditions. By utilizing the start-up conditions high selectivity for p-xylene can be achieved while providing stable catalytic activity over extended periods.
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申请公布号 |
US2005027151(A1) |
申请公布日期 |
2005.02.03 |
申请号 |
US20030632254 |
申请日期 |
2003.08.01 |
申请人 |
GHOSH ASHIM KUMAR;HARVEY PAMELA |
发明人 |
GHOSH ASHIM KUMAR;HARVEY PAMELA |
分类号 |
C07C2/66;C07C2/86;(IPC1-7):C07C2/68 |
主分类号 |
C07C2/66 |
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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