发明申请
- 专利标题： GREEN CATALYTIC PROCESS FOR THE SYNTHESIS OF ACETYL SALICYLIC ACID
- 专利标题（中）： 用于合成乙酰乙酸的绿色催化方法
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申请号： US11859001申请日： 2007-09-21
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公开(公告)号： US20090082592A1公开(公告)日： 2009-03-26
- 发明人: RAKSH VIR JASRA , BEENA TYAGI , MANISH KUMAR MISHRA
- 申请人： RAKSH VIR JASRA , BEENA TYAGI , MANISH KUMAR MISHRA
- 专利权人： COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH.
- 当前专利权人： COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH.
- 主分类号： C07C51/347
- IPC分类号： C07C51/347
摘要：
The present invention provides a green catalytic process for the synthesis of acetyl salicylic acid using solid acid catalysts at atmospheric pressure. The invention involve the solid acid catalyst such as sulfated transition metal oxides namely nano-crystalline sulfated zirconia, sulfated titania; modified zeolites namely zeolite H-beta, H—Y, H-ZSM-5 and K-10 montmorillonite clay in a solvent free environment using salicylic acid and acetic anhydride with yield about 95% and high selectivity (100%). The solid acid catalysts can be recovered, regenerated and reused.
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