发明名称 |
Crystalline silica catalysts |
摘要 |
Para-xylene is selectively prepared by reacting toluene and a methylating agent in the presence of a phosphorus modified catalyst comprising a silica polymorph intermixed with an inorganic refractory oxide, said catalyst having an alkali content of less than about 1.3 milliequivalents per gram as available alkali.
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申请公布号 |
US4518703(A) |
申请公布日期 |
1985.05.21 |
申请号 |
US19820447477 |
申请日期 |
1982.12.06 |
申请人 |
UNION OIL COMPANY OF CALIFORNIA |
发明人 |
YOUNG, DEAN A. |
分类号 |
B01J27/16;B01J29/035;C07C2/86;(IPC1-7):B01J21/06;B01J21/16;B01J27/00 |
主分类号 |
B01J27/16 |
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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