摘要
制备了钴锌双金属氰化物/戊二酸锌复合催化剂(DMC/ZnGA),研究了催化剂的组成对CO2与环氧丙烷共聚反应的影响;采用凝胶渗透色谱、核磁共振谱、红外光谱和热重分析对共聚产物进行了表征,结果表明,钴锌双金属氰化物/戊二酸锌复合催化剂表现出明显的协同效应,能高效催化CO2与环氧丙烷的共聚反应,共聚产物的数均分子量在18 000~31 000;通过调节催化剂的配比,最高催化效率达到168 g-聚合物.(g-催化剂)-1,反应生成共聚产物的反应选择性大于97%。
The double metal cyanide/zinc glutarate (DMC/ZnGA) composite catalyst was prepared. The influence of catalyst component on the eopolymerization of carbon dioxide (CO2 ) with propylene oxide (PO) was investigated. The copolymerization products were characterized by gel permeation chromatography ( GPC ), 1H nuclear magnetic resonance ( J H NMR) , Fourier-transform infrared spectroscopy (FI-RT) and thermogravimetrie analysis (TGA). The results indicated that DMC/ZnGA composite catalyst exhibited obviously synergetic effect and high catalytic efficiency for copolymerization of CO2 and propylene. The number average molecular weight of the copolymer was 18 000 - 31 000. The highest catalytic efficiency of 168 g-polymer (g-catalyst)-1 was attained by optimizing the mass ratio of DMC and ZnGA in the catalyst. The selectivity to the copolymer was more than 97%.
出处
《工业催化》
CAS
2012年第1期67-71,共5页
Industrial Catalysis
基金
广西重点实验室基金(07-109-001-3)资助项目
广西科学院基金(10YJ25SW01)资助项目
关键词
催化化学
二氧化碳
环氧丙烷
钴锌双金属氰化物
戊二酸锌
共聚反应
catalytic chemistry
carbon dioxide
propylene oxide
cobalt-zinc double metal cyanide
zincglutarate
copolymerization