摘要：

A catalyst system composed of Cu-based catalyst and alkaline methoxide for low temperature methanol synthesis have high activity and high methanol selectivity, but long run results show that catalyst deactivation has restricted the commercial application of the process. The experimental results showed that the deactivation rate of carbonylation catalysts is much more faster than that of hydrogenolysis catalysts, and the detailed studies including chemical analysis, gas chromatograph, FTIR and XRD demonstrated that most part of sodium methoxide is transformed to sodium formate after long time run.

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