文献类型：期刊文献

英文题名：Kinetics for Co Catalyzed Oxidative Cyanation of Biomass-Based Furfural

作者：Li, Youjie[2,3]; Yao, Chenglong[2,3]; Wang, Xiaomei[2,3]; Chen, Jinzhu[1]; Xu, Yisheng[2]

机构：[1] Guangdong Provincial Key Laboratory of Functional Supramolecular Coordination Materials and Applications, China; [2] State Key Laboratory of Chemical Engineering, International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China; [3] College of Chemistry and Materials Science, Jinan University, Guangzhou, 511443, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240254144)

语种：英文

外文关键词：Aldehydes - Ammonia - Catalysts - Cobalt - Dehydrogenation - Doping (additives) - Furfural - Kinetics - Nitrogen - Titanium dioxide

摘要：Oxidative cyanation of furfural (1a) to 2-furancarbonitrile (3a) by using NH3 as a nitrogen source and O2 as an oxidant is an effective strategy for biomass-based nitrile synthesis. Herein, Co catalyst supported on a composite of nitrogen-doped carbon and TiO2 (Co/NC-TiO2) was developed for the oxidative cyanation. The multiphase interface architecture of the catalyst enriched oxygen vacancies; moreover, the electron-rich NC component facilitated Co2+/Co3+ valence transformation, thus promoting O2 activation. The kinetic analysis demonstrated the condensation of 1a/NH3-to-(2-furanyl)methanimine (2a) as the rate-determining step, which was consecutively promoted by 2a/O2-to-3a dehydrogenation over the catalyst surface. A Langmuir-Hinshelwood mechanism was suggested for the oxidative dehydrogenation of the 2a/O2-to-3a step, in which O2 is activated by an associative adsorption on the Co surface yielding a superoxide radical (O2?–) species for 2a dehydrogenation with the release of H2O2. This research highlights the kinetic and mechanic understanding of the catalytic oxidative cyanation. ? 2024, The Authors. All rights reserved.