发明名称 |
Preparation of vanadium phosphorus catalysts, catalysts so produced and use thereof in the production of maleic anhydride. |
摘要 |
<p>A process for the preparation of oxidation catalysts containing mixed oxides of vanadium and phosphorus, which catalysts are particularly effective in the oxidation of n-butane, n-butenes, 1,3-butadiene or a mixture thereof with molecular oxygen or an oxygen-containing gas in the vapour phase to produce high yields of maleic anhydride with good selectivity comprises introducing a vanadium compound into an olefinic halogenated organic liquid medium, adding a phosphorus-containing compound to the medium reducing at least a portion of the vanadium to a +4 valence state either prior to or subsequent to the addition of the phosphorus-containing compound, and recovering, drying and calcining the resulting vanadium-phosphorus oxide catalyst precursor. </p> |
申请公布号 |
EP0050401(A2) |
申请公布日期 |
1982.04.28 |
申请号 |
EP19810303465 |
申请日期 |
1981.07.28 |
申请人 |
THE STANDARD OIL COMPANY |
发明人 |
LEMANSKI, MICHAEL FRANCIS;MILBERGER, ERNEST CARL;BREMER, NOEL JEROME |
分类号 |
C07D307/60;B01J27/18;B01J27/198;C01B25/37;C01B25/45;C07B61/00;C07C51/215;C07C51/25;(IPC1-7):01J27/18;07C57/145;07C51/215 |
主分类号 |
C07D307/60 |
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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