Diamine-modified porous indium frameworks with crystalline porous materials(CPM)-5 structure for carbon dioxide fixation under co-catalyst and solvent free conditions  

作　　者：Naghmeh Bayati Saeed Dehghanpour 

机构地区：[1]Department of Chemistry,Faculty of Physics and Chemistry,Alzahra University,Tehran 1993893973,Iran

出　　处：《Journal of Environmental Sciences》2023年第10期12-21,共10页环境科学学报（英文版）

基　　金：Alzahra University Research Council for the financial support

摘　　要：In the presentwork,functional diamine groups into indium frameworks to synthesize cyclic carbonates from CO_(2)and epoxides with efficient catalytic activity in the absence of cocatalyst and solvent are reported for the first time.Crystalline porous materials(CPM)-5 modified with 1,2-phenylene diamine and ethylene diamine(CPM-5-PhDA and CPM-5-EDA),were prepared using a post-synthetic modification(PSM)method.The properties of the modified CPM-5 were characterized by powder X-ray diffraction(PXRD),Fourier transform infrared spectroscopy(FT-IR),X-ray photoelectron spectroscopy(XPS),N2-adsorption,scanning electron microscopy(SEM),CO_(2)adsorption,and temperature programmed desorption TPD methods.The presence of diamine groups as basic sites and indium Lewis acid sites in the framework structure were desirable for high catalytic activity.For a given catalyst weight,CPM-5-PhDA was the best candidate to appear with great catalytic activity and selectivity for the cycloaddition reaction at 100°C and1MPa CO_(2)under co-catalyst and solvent free conditions.CPM-5-PhDA alsowas found to afford large and bulky epoxides.The catalyst can be easily separated and reused five times without any decline in activity.

关 键 词：Cyclic carbonate Metal-organic frameworks CO_(2)fixation Post-synthesis Co-catalyst free 

分 类 号：X701[环境科学与工程—环境工程] TQ426[化学工程]