公开(公告)号：US20140316071A1

公开(公告)日：2014-10-23

申请号：US14323437

申请日：2014-07-03

Applicant: CHIYODA CORPORATION

Inventor： Zhixiong You ,  Takeshi Minami ,  Chunji Yin ,  Yoichi Umehara ,  Tetsuro Matsumura ,  Chikako Hashimoto ,  Yasuo Hosono

IPC: C08F226/06 ,  C08F212/36

CPC classification number: C08F226/06 ,  C07C51/12 ,  C08F212/36 ,  C07C53/08

Abstract: According to a method for producing acetic acid by carbonylation of methanol characterized in that an acid having an acid dissociation constant (pKa) smaller than the constant of acetic acid is allowed to be present in the reaction system, acetic acid can be produced by the reaction of methanol and carbon monoxide in a reaction liquid in the presence of a solid catalyst containing rhodium and alkyl iodide, to achieve an enhanced reaction rate of carbonylation of methanol in producing acetic acid in the region at a high carbonylation degree (Ca>0.8 mol/mol) for more efficient production of acetic acid.

Abstract translation: 根据通过羰基化甲醇生产乙酸的方法，其特征在于在反应体系中存在酸解离常数（pKa）小于乙酸常数的酸，可以通过反应生成乙酸 的甲醇和一氧化碳在含有铑和烷基碘的固体催化剂存在下的反应液中，以在羰基化程度高（Ca> 0.8mol / L）的区域中提高甲醇生产乙酸的羰基化反应速率， mol）以更有效地生产乙酸。