卟啉
催化作用
铝
化学状态
材料科学
氧化态
化学
多相催化
光化学
化学工程
无机化学
有机化学
X射线光电子能谱
工程类
作者
Yaju Chen,Rongchang Luo,Qihang Xu,Wuying Zhang,Xiantai Zhou,Hongbing Ji
出处
期刊:Chemcatchem
[Wiley]
日期:2017-02-17
卷期号:9 (5): 767-773
被引量:101
标识
DOI:10.1002/cctc.201601578
摘要
A series of metalloporphyrin-based hyper-crosslinked polymers (M-HCPs: M=Al, Co, Fe, Mn) has been directly synthesized through Friedel–Crafts alkylation reactions. The M-HCPs afforded abundant permanent nanopores, high Brunauer–Emmett–Teller (BET) surface area, and exceptional CO2/N2 adsorptive selectivity. The experimental results suggested that the hollow tubular Al-HCP exhibited extraordinary catalytic performance in the solvent-free synthesis of cyclic carbonates from epoxides and CO2 by using tetrabutylammonium bromide as a cocatalyst under mild conditions, which was clearly superior to the corresponding homogeneous analogue. Surprisingly, a high turnover frequency (TOF) value of 14 880 h−1 was achieved with propylene oxide at 100 °C and 3.0 MPa, which was a promising result for industrial production compared with previously reported heterogeneous catalysts. More interestingly, Al-HCP could smoothly catalyze the cycloaddition reaction, producing the corresponding cyclic carbonates by using simulated flue gas (15 % CO2 and 85 % N2 in volume) as the raw material under ambient conditions. Moreover, Al-HCP could be readily recycled and efficiently reused more than ten times, exhibiting excellent stability.
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