Cycloaddition of propylene oxide and carbon dioxide using CoMn2O4 nanoparticles supported onto dendritic fibrous nanosilica

Abstract

An environmentally friendly surface modification method was employed to synthesize a solid ionic liquid catalyst appropriate. The fabrication of green heterogeneous nano catalysts by chemical modification is determined to be very attractive in the case of the conversion of CO2 into value-added products. Herein, we reported chemical composition of epoxides, and carbon dioxide to prepare poly(propylene carbonate) in the presence of nanoparticles of CoMn2O4 stably placed on the surface of DFNS (dendritic fibrous nanosilica) by cellulose (cellulose@DFNS-CoMn2O4) as a nanocatalyst. Poly(propylene carbonate) with a Ma (average molecular weight) of 6497 kg/mol and 76% yield was obtained at 2 h and 100 °C as a reaction time and reaction temperature. With the aim of preparing the catalyst, cellulose was used to activate the DFNS surface to be employed as a substrate to support nanoparticles of CoMn2O4. Cellulose eliminates the need for a reducing agent and acts as a reducing natural agent and stabilizing for nanoparticles of CoMn2O4. The morphology of the final compound affected the catalytic feature of ionic liquid catalyst for synthesis of carbonyl compounds.