反应诱导的用于气相氧化一元醇的稳健的钯铋/碳化硅催化剂。

Reaction induced robust Pd Bi /SiC catalyst for the gas phase oxidation of monopolistic alcohols.

作者信息

Wang Pengwei, Xu Lijun, Zhu Jianming, Gao Kunqi, Zhang Yan, Wang Jifen

机构信息

Research Center of Resource Recycling Science and Engineering, College of Arts and Sciences, Shanghai Polytechnic University Shanghai 201209 China

出版信息

RSC Adv. 2020 Nov 24;10(69):42564-42569. doi: 10.1039/d0ra07859j. eCollection 2020 Nov 17.

DOI:10.1039/d0ra07859j

PMID:35516743

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9057962/

Abstract

Reaction induced Pd Bi /SiC catalysts exhibit excellent catalytic activity (92% conversion of benzyl alcohol and 98% selectivity of benzyl aldehyde) and stability (time on stream of 200 h) in the gas phase oxidation of alcohols at a low temperature of 240 °C due to the formation of Pd-BiO species. TEM indicates that the agglomeration of the 5.8 nm nanoparticles is inhibited under the reaction conditions. The transformation from inactive PdO-BiO to active Pd-BiO under the reaction conditions is confirmed elaborately by XRD and XPS.

摘要

反应诱导的Pd Bi /SiC催化剂在240℃低温下的醇类气相氧化反应中表现出优异的催化活性（苯甲醇转化率92%，苯甲醛选择性98%）和稳定性（连续运行时间200小时），这归因于Pd-BiO物种的形成。透射电子显微镜（TEM）表明，在反应条件下，5.8纳米纳米颗粒的团聚受到抑制。X射线衍射（XRD）和X射线光电子能谱（XPS）详细证实了在反应条件下无活性的PdO-BiO向活性Pd-BiO的转变。