发明名称 |
Regeneration of supported-nickel catalysts |
摘要 |
This invention describes a method of regenerating the activity of deactivated supported-nickel catalysts that have lost activity after use as a hydrogenation catalyst in the finishing stage of the process of conversion of butynediol to butanediol. The method comprises contacting said deactivated catalyst with hydrogen at a temperature of about 200 DEG to 500 DEG C. to convert surface polymers to gaseous compounds and removing said gaseous compounds from the vicinity of the thus-treated catalyst. In the preferred form of the invention, in a single step, a slow stream of hydrogen is passed through the deactivated catalyst in situ as a fixed bed and the gaseous compounds are removed simultaneously in the hydrogen stream.
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申请公布号 |
US4361495(A) |
申请公布日期 |
1982.11.30 |
申请号 |
US19810243315 |
申请日期 |
1981.03.13 |
申请人 |
GAF CORPORATION |
发明人 |
HORT, EUGENE V.;DE THOMAS, WALDO |
分类号 |
B01J23/755;B01J23/889;B01J23/94;B01J38/10;C07B61/00;C07C27/00;C07C29/17;C07C31/20;C07C67/00;(IPC1-7):B01J23/94;B01J23/92;C07C29/00 |
主分类号 |
B01J23/755 |
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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