甲壳素
催化作用
生物高聚物
化学工程
赫克反应
化学
壳聚糖
纳米颗粒
微球
多相催化
材料科学
钯
纳米技术
有机化学
聚合物
工程类
作者
Xianglin Pei,Yan Li,Yi Deng,Lijun Lu,Wendian Li,Renyi Shi,Aiwen Lei,Lina Zhang
标识
DOI:10.1016/j.carbpol.2020.117020
摘要
Chitin derived from seafood wastes is a sustainable biopolymer, which can be used to constructe new materials to reduce the environmental pollution caused by non-biodegradable plastics. Herein, nanofibrous microspheres fabricated from chitin solution were used as carriers to construct three different chitin-supported Pd catalysts through diverse activation methods, subsequently revealed their differences in structure and performance. The palladium nanoparticles were firmly and highly dispersed on the microspheres due to the interconnected nanofibrous networks and functional groups of chitin, confirmed by various physicochemical characterizations. As the best candidate catalyst of Pd/chitin-Ar, in the CO oxidation reaction, which achieved 100% CO conversion with a lower Pd content, and exhibited excellent stability in 24-hours cycle reaction. Importantly, the catalyst was further applied in Heck coupling reaction, which also displayed competitive catalytic activity and stability (∼6runs, 94%). This utilizing of biomass resource to build catalyst materials would be important for the sustainable chemistry.
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