发明名称 |
Process for the preparation of maleic anhydride catalyst |
摘要 |
Maleic anhydride is prepared by the catalytic oxidation of unsaturated hydrocarbons having 4 to 6 carbon atoms, at a temperature of from 350 DEG to 500 DEG C., in the presence of a catalyst which is produced by a method wherein a mixture of a titanium oxide and a vanadium compound in an atomic ratio of from 1 to 15 is calcined at a temperature of from 630 DEG to 1000 DEG C. to prepare a precursory catalyst, and wherein a gas mixture containing an organic phosphorus compound and a carrier gas is brought into contact with a mass of the percursory catalyst at a supply rate of the phosphorus compound being from 0.01 to 10 millimoles/hr per 1 ml of the mass of the percursory catalyst and at a temperature of from 350 DEG to 600 DEG C. during when a total amount of from 0.3 to 30 millimoles of the phosphorus compound per 1 ml of the mass of the precursory catalyst passes through the mass of the precursory catalyst.
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申请公布号 |
US4154703(A) |
申请公布日期 |
1979.05.15 |
申请号 |
US19770820338 |
申请日期 |
1977.07.29 |
申请人 |
UBE INDUSTRIES LTD |
发明人 |
BANDO, YASUO;FUZINAGA, MASATAKA;OHDAN, KYOJI;SAKAI, FUMIHIKO;UMEMURA, SUMIO |
分类号 |
C07D307/60;B01J23/00;B01J23/22;B01J27/00;B01J31/36;C07B61/00;C07C51/25;(IPC1-7):B01J27/14;C07D307/89 |
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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