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Amine-oxide hybrid materials in combination with cobalt for the catalyzed cycloaddition of carbon dioxide and propylene oxide
Catalysis Today ( IF 5.2 ) Pub Date : 2020-03-17 , DOI: 10.1016/j.cattod.2020.03.013
Karla P. Ramírez-Cuellar , Karla P. Salas-Martin , Pedro A. Méndez-Ocampo , Lorena Martínez- dlCruz , Alfonso García-Márquez , Itzel Guerrero-Ríos

Amine-oxide materials synthesized starting from small silica particles and porous silica in combination with polyethyleneimine have been prepared by co-condensation. The materials showing different surface areas and porosity were attained for M2 and M3 with low and high surface areas, respectively. In the new porous materials prepared CO2 adsorption capacity is enhanced at higher temperatures. The morphology of the resulting hybrid material influences the catalytic performance of salphenic cobalt catalysts in the CO2/propylene oxide coupling reactions. Depending on the catalytic reaction conditions (catalyst, cocatalyst, CO2 pressure and reaction temperature), high yields of the CO2/propylene oxide-cycloaddition reaction is favored over the copolymerization reaction.



中文翻译:

胺-氧化物杂化材料与钴结合用于二氧化碳和环氧丙烷的催化环加成

由小二氧化硅颗粒和多孔二氧化硅与聚乙烯亚胺结合而合成的氧化胺材料已经通过共缩合制备。对于具有低和高表面积的M2M3,分别获得了显示不同表面积和孔隙率的材料。在新的多孔材料中,在较高温度下提高了对CO 2的吸附能力。所得杂化材料的形态影响在CO 2 /环氧丙烷偶联反应中,红锌钴催化剂的催化性能。根据催化反应条件(催化剂,助催化剂,CO 2压力和反应温度),高产率的CO 2/环氧丙烷-环加成反应优于共聚反应。

更新日期:2020-03-19
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