环氧丙烷催化羰化合成β-丁内酯

β-丁内酯是合成可生物降解“绿色塑料”聚3-羟基丁酸酯的基础单体原料之一，目前尚没有量产化的技术。项目以环氧丙烷催化羰化合成β-丁内酯为技术路线，考虑当前研究的金属钴羰基化合物协同不同金属的Lewis酸催化剂所带来的催化剂分离、回收方面的技术难题，提出研制新型的同钴核离子对催化剂以及基于此的聚离子液体负载型Co基催化剂。为此，(1) 开展两类催化剂的合成和表征研究；(2) 完成性能评价，优化和筛选性能优良的催化剂，完成性能优良催化剂的动力学研究和机理研究；(3) 完成5升反应体系、固定床反应体系的工艺研究。研究目标是走通环氧丙烷羰化合成β-丁内酯的绿色催化路线，为β-丁内酯原料的量产提供可靠的科学和技术基础数据。

β-Butyrolactone is one of the key basic monomers to prepare polyhydroxybutyrate, one of the biogradable polymers utilized as the green plastics. However, no β-butyrolactone production technology in industry has been reported at current time. This project proposes the study on the catalytic synthesis of β-butyrolactone via carbonylation of propylene oxide. However, the current studied catalysts for the system contain cobalt carbonyl compounds and Lewis acids with different metals, which causes difficulty for separation and reuse of the catalysts. In line with this, the homonuclear cobalt-based ion pair catalysts and their poly(ionic liquid)s-supported catalysts are proposed as the efficient catalysts, and the project researches include, 1) synthesis and characterization of the two types of catalysts, 2) optimization and evaluation of the catalytic performance for selecting typical catalysts with their corresponding kinetic and mechanism studies, and 3) implementation of studies of the system in a 5 L reactor and a fixed-bed reactor. The target of this project is to open a green chemistry route for efficient production of β-butyrolactone through the catalytic carbonylation of propylene oxide. The research results will offer the key data on science and technology to develop this preparative way.