发明名称 |
Improved aromatic carboxylic anhydride catalysts. |
摘要 |
<p>An improved catalyst for molecular oxidation of an aromatic hydrocarbon to form the corresponding aromatic carboxylic anhydrides is prepared by the steps of forming a catalyst precursor by depositing on titanium dioxide solids in the anatase form a discontinuous monolayer amount of at least one soure of tantalum oxide, calcining the thus-formed catalyst precursor under conditions sufficient to convert the tantalum oxide source into the oxide form, depositing upon the calcined catalyst precursor a catalytically effective amount of at least one vanadium compound which is convertible into vanadium oxide upon heating and calcining the vanadium-deposited solids under conditions sufficient to convert the vanadium compound into vanadium oxide. </p> |
申请公布号 |
EP0170383(A1) |
申请公布日期 |
1986.02.05 |
申请号 |
EP19850304340 |
申请日期 |
1985.06.17 |
申请人 |
EXXON RESEARCH AND ENGINEERING COMPANY |
发明人 |
CHERSICH, CLAUDIO CIMATTI;SALEH, RAMZI YANNI;WACHS, ISRAEL EPHRAIM |
分类号 |
C07D307/89;B01J23/00;B01J23/20;B01J23/22;B01J37/02;C07B61/00;C07C51/265;(IPC1-7):C07D307/89 |
主分类号 |
C07D307/89 |
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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