Acid-base bicentric ionic liquids catalytic reaction of EG and CO2 into carbonates enhanced by styrene oxide
作者:Chan Meng、Heming Zhang、Qian Su、Hanwen Yan、Changyuan Du、Yunong Li、Li Dong、Weiguo Cheng
DOI:10.1016/j.mcat.2023.113283
日期:2023.8
esterification reaction of ethylene glycol (EG) and carbon dioxide (CO2) to synthesize ethylene carbonate (EC), the yield is low and the catalysts are mostly metals, a series of green acid-base bicentric ionic liquids (ABbILs) were developed. Among them, the ABbILs of 1,5,7-Triazabicyclo[4.4.0]dec‑5-ene glutarimide ([TBDH][Glu]) had the best catalytic performance. Under the optimal reaction conditions
鉴于乙二醇(EG)与二氧化碳(CO 2) 合成碳酸亚乙酯(EC),产率低,催化剂多为金属,开发了一系列绿色酸碱双中心离子液体(ABbILs)。其中,1,5,7-三氮杂双环[4.4.0]dec-5-烯戊二酰亚胺([TBDH][Glu])的ABbILs催化性能最好。在最佳反应条件下,EC的产率达到29.5%,高于大多数常规金属基催化剂。通过活性筛选结果和DFT计算发现,不同的阳离子影响EG阴离子上的N与H质子的相互作用,阳离子上的H可以激活EG上的O,从而影响ABbILs激活EG的能力. 通过表征和DFT计算提出了Bronsted酸和Lewis碱的酸碱双中心协同催化机理。2用于制备环状碳酸酯。