发明申请
- 专利标题： Method for producing gamma-butyrolactone
- 专利标题（中）： γ-丁内酯的制造方法
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申请号： US10513040申请日： 2003-04-25
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公开(公告)号： US20050215800A1公开(公告)日： 2005-09-29
- 发明人: Rolf Pinkos , Rolf-Hatmuth Fischer , Markus Rosch , Nils Bottke , Stephan Schlitter , Michael Hesse , Alexander Weck , Gunther Windecker , Gunnar Heydrich
- 申请人： Rolf Pinkos , Rolf-Hatmuth Fischer , Markus Rosch , Nils Bottke , Stephan Schlitter , Michael Hesse , Alexander Weck , Gunther Windecker , Gunnar Heydrich
- 优先权： DE10219224.3 20020430
- 国际申请： PCT/EP03/04287 WO 20030425
- 主分类号： C07D307/33
- IPC分类号： C07D307/33 ; B01J21/08 ; B01J23/72 ; C07B61/00 ; C07D307/20 ; C07D307/26
摘要：
The present invention relates to a process for preparing unsubstituted or C1-C4-alkyl-substituted gamma-butyrolactone by catalytic hydrogenation of maleic acid and/or its derivatives in the presence of chromium-free catalyst comprising from 10 to 80% by weight of copper oxide and from 10 to 90% by weight of at least one catalyst support selected from the group consisting of silicon dioxide, titanium dioxide, hafnium dioxide, magnesium silicate, activated carbon, silicon carbide, zirconium dioxide and alpha-aluminum oxide.
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