Invention Grant
- Patent Title: Methanol carbonylation process with rhodium catalyst and a metallic co-catalyst selected from transition metals, zinc, beryllium, indium, tin, strontium and barium
- Patent Title (中): 用铑催化剂和选自过渡金属，锌，铍，铟，锡，锶和钡的金属助催化剂的甲醇羰基化方法
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Application No.: US13701925Application Date: 2010-06-14
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Publication No.: US09024061B2Publication Date: 2015-05-05
- Inventor: Carole M. Le Berre , Samuel Gautron , Philippe J. Kalck , Philippe G. Serp , Nicolas D. Lassauque , G. Paull Torrence
- Applicant: Carole M. Le Berre , Samuel Gautron , Philippe J. Kalck , Philippe G. Serp , Nicolas D. Lassauque , G. Paull Torrence
- Applicant Address: US TX Irving
- Assignee: Celanese International Corporation
- Current Assignee: Celanese International Corporation
- Current Assignee Address: US TX Irving
- Agency: Ferrells, PLLC
- Agent Michael W. Ferrell; Anna L. Kinney
- International Application: PCT/US2010/001698 WO 20100614
- International Announcement: WO2011/159268 WO 20111222
- Main IPC: C07C51/12
- IPC: C07C51/12 ; C07C51/47
Abstract:
A carbonylation process for making acetic acid using a metallic co-catalyst composition, effective as a rhodium stabilizer and/or rate promoter, at molar ratios of metal/rhodium of about 0.5 to 40. The process includes reacting methanol with carbon monoxide in the presence of a rhodium-based catalytic metal complex with about 1 to 20 weight percent methyl iodide, less than about 8 weight % water and about 0.5 to about 30 weight percent methyl acetate. The crude acetic acid is flashed and further purified.
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