Hongwu Ma , Yurui Song , Yajuan Zhou , Hao Chen , Keliang Wu , Qiang Liu , Yanlong Tai
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引用次数: 0
Abstract
The capture and conversion of CO2 into high-value fine chemicals represented one of the most promising approaches to addressing the issue of excessive carbon emissions. Frustrated Lewis pairs (FLPs) had attracted significant attention in CO2 catalytic conversion due to their non-metallic nature and high reactivity. To address the industrial requirement for recyclable catalyst performance, the development of heterogeneous FLPs tailored for CO2 conversion is of paramount importance. In this study, we first synthesized N-containing polymers using bipyridine and triphenylamine as structural units respectively, followed by a carbonization procedure to obtain in-situ N-doped porous carbon (designated as PC-BP and PC-TP, respectively). Subsequently, we introduced B(C6F5)3 into PC-BP and PC-TP to construct FLPs between B and N (named PC-BP-FLPs and PC-TP-FLPs). The PC-BP-FLPs and PC-TP-FLPs exhibited excellent CO2 capture performances, with the maximum CO2 adsorption capacities of PC-BP-FLPs and PC-TP-FLPs reached 41 cm3/g and 60 cm3/g at 273.15 K and 1 bar, respectively. And then, PC-BP-FLPs and PC-TP-FLPs demonstrated excellent catalytic conversion performance (Yield > 90 %) and recyclability (at least 5 cycles) in the process of catalyzing the synthesis benzimidazole from o-phenylenediamine and CO2. These findings indicated that the catalysts held great application potential in the field of CO2 capture and conversion, providing a sustainable solution for non-metallic catalytic conversion of CO2.
期刊介绍:
Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.