发明名称 |
PROCESS FOR THE PREPARATION OF GAMMA-BUTYROLACTONE AND THE USE THEREOF |
摘要 |
The invention relates to a process for the preparation of gamma-butyrolactone by catalytic hydrogenation of maleic acid anhydride, succinic acid anhydride or the acids thereof in the vapour phase in the presence of catalysts based on copper oxide and aluminium oxide after reduction. Said process is characterised in that a catalyst used to carry out the reaction consists of from 50 to 95 % by weight of copper oxide, 3 to 30 % by weight of aluminium oxide and 0 to 25 % by weight of a binder. The catalyst preferably consists of from 83.5 to 85.5 % by weight of copper oxide, 9-11 % by weight of aluminium oxide and 4.5 to 6.5 % by weight of graphite. The reaction mixture obtained can be used, without the removal of water, directly for other applications, e.g. for the preparation of N-methylpyrrolidone.
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申请公布号 |
CA2240133(A1) |
申请公布日期 |
1997.07.10 |
申请号 |
CA19962240133 |
申请日期 |
1996.12.07 |
申请人 |
AKZO NOBEL N.V.;AKZO NOBEL N.V. |
发明人 |
BERGFELD, MANFRED JOSEF;UIHLEIN, KURT |
分类号 |
C07D307/33;C07D207/26;C07D207/267;C07D315/00;(IPC1-7):C07D307/33 |
主分类号 |
C07D307/33 |
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