顺酐一步法合成PVP单体的催化体系研究

Choosing g-butyrolactone as starting material, through preparation, modification and sieve of applicable molecular sieves and multibasic oxides, NVP is synthesized by sequencial gas-solid phase catalytic reaction of g-butyrolactone and ethanolamine, then catalytic dehydration of N-hydroxyethenelpyrrolidone(NHP). Main influencing factors are discussed and reaction mecalism is investigated. Bimetal-bifunctional catalytic mechanism is presented for the reaction of g-butyrolactone and ethanolamine. Kinetic equation is obtained through experimentation and relevant parameters are calculated. Synthesis of NVP by one -step method from g-butyrolactone effectively. Preparation of g-butyrolactone, NHP and NVP is studied by one-step method from maleic anhydride under higher pressure respectively. It is deduced that yield of NHP is under 10% through gas phase chromatography analysis. Fourthermore, polimerization of NVP, properties of its polymers and their uses in bevearage clarification, soft contact lens materials and sanitation are studied widely.

本研究拟以便宜易得的顺酐为原料，探讨一步法合成PVP单体—N-乙烯基吡咯烷酮（NVP）的催化反应性能。制备、筛选出对该反应有效的多功能催化体系，考察其催化作用机理，并进一步对多功能催化体系进行优化。进行动力学研究，建立催化反应动力学模型，丰富催化剂工程学科的有关内容，为开发切实可行、环境有好的工艺路线提供理论依据。