In this paper, reaction mechanism, process and technical character are described.Meanwhile, technical progress of carbonylation of methanol to acetic acid via low pressure is also introduced.

• 阐述了甲醇低压羰基会成醋酸的反应机理、工艺流程和技术特点，同时介绍了甲醇低压羰基合成醋酸的技术进展。