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Study on the preparation of N-methyl pyrrolidone with γ-butyrolactone.The batch reaction of N-methyl pyrrolidone( NMP) was synthesized by butyrolactone and methylamine solution as raw materials,and gas chromatograph and automatic potentiometric titrator were used to analyze the raw materials and the samples of the reaction process. In this work the influencing factors of the batch reaction such as the temperature,reaction time,raw material ratio and other factors on the yield of  N-methyl pyrrolidoneNMP were researched. In addition,the continuous experimental apparatus were established,which were carried out on the basis of the batch reaction to get the further optimum conditions of the continuous reaction. The obtained data will provided the base for optimization of pilot-scale study process.

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