Chitin microsphere supported Pd nanoparticles as an efficient and recoverable catalyst for CO oxidation and Heck coupling reaction

Xianglin Pei; Yan Li; Yi Deng; Lijun Lu; Wendian Li; Renyi Shi; Aiwen Lei; Lina Zhang

doi:10.1016/j.carbpol.2020.117020

Chitin microsphere supported Pd nanoparticles as an efficient and recoverable catalyst for CO oxidation and Heck coupling reaction

Carbohydr Polym. 2021 Jan 1:251:117020. doi: 10.1016/j.carbpol.2020.117020. Epub 2020 Sep 2.

Authors

Xianglin Pei¹, Yan Li², Yi Deng², Lijun Lu², Wendian Li², Renyi Shi², Aiwen Lei³, Lina Zhang⁴

Affiliations

¹ College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China; College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China.
² College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
³ College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. Electronic address: aiwenlei@whu.edu.cn.
⁴ College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. Electronic address: zhangln@whu.edu.cn.

PMID: 33142581
DOI: 10.1016/j.carbpol.2020.117020

Abstract

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.

Keywords: CO oxidation; Chitin supported catalyst; Heck coupling reaction; Palladium; Sustainable natural polymer.