Invention Grant
- Patent Title: Green catalytic process for the synthesis of acetyl salicylic acid
- Patent Title (中): 用于合成乙酰水杨酸的绿色催化方法
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Application No.: US11859001Application Date: 2007-09-21
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Publication No.: US07544831B2Publication Date: 2009-06-09
- Inventor: Raksh Vir Jasra , Beena Tyagi , Manish Kumar Mishra
- Applicant: Raksh Vir Jasra , Beena Tyagi , Manish Kumar Mishra
- Applicant Address: IN Gujarat
- Assignee: Council of Scientific and Industrial Research
- Current Assignee: Council of Scientific and Industrial Research
- Current Assignee Address: IN Gujarat
- Agency: Ladas and Parry LLP
- Main IPC: C07C67/02
- IPC: C07C67/02 ; C07C69/02 ; C07C63/04
Abstract:
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.
Public/Granted literature
- US20090082592A1 GREEN CATALYTIC PROCESS FOR THE SYNTHESIS OF ACETYL SALICYLIC ACID Public/Granted day:2009-03-26
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