Biotemplate preparation of Ru/CeO2 catalysts for the catalytic combustion of vinyl chloride
Kai Shen, Qing Ding, Fan Hu, Fanda Pan, Yuedian Shou, Kaixuan Jiao, Xia Chen, Baocheng Xie, Wangcheng Zhan, Yanglong Guo, Yun Guo, Li Wang, Qiguang Dai, Aiyong Wang
Abstract
Biotemplates are often used in the preparation of catalysts due to availability of raw materials and environment-friendly. Herein, three biomorphic CeO2 were prepared from waste tobacco materials and impregnated with 1 wt% Ru for the catalytic combustion of vinyl chloride. The results showed that the biotemplates greatly affected the properties of the catalysts. 1Ru/CeO2-YS exhibited the best catalytic activity and superior stability because of its abundant oxygen vacancies, sufficient acidic sites and the optimal redox properties. SEM images suggested that CeO2-YS and CeO2-YM maintained the basic structure of the biotemplates. Moreover, a possible reaction mechanism over Ru/CeO2 was proposed.