Catalytic effects of V_(2)O_(5) on oxidative pyrolysis of spent cation exchange resin

作     者：Qi SONG Jian-hua SHEN Yong YANG Yao YANG Bin-bo JIANG Zu-wei LIAO Qi SONG;Jian-hua SHEN;Yong YANG;Yao YANG;Bin-bo JIANG;Zu-wei LIAO

作者机构：Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture TechnologyZhejiang UniversityHangzhou 310027China College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Stale Key Laboratory of Chemical EngineeringCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China 

出 版 物：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 (浙江大学学报（英文版）A辑（应用物理与工程）)

年 卷 期：2021年第22卷第2期

页      面：94-105页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Project supported by the National Natural Science Foundation of China(No.U1862203) the National Science Fund for Distinguished Young Scholars(No.21525627) the Science Fund for Creative Research Groups of National Natural Science Foundation of China(No.61621002) 

主　　题：Waste disposal Cation exchange resin V2O5 Catalysis Oxidative pyrolysis 

摘      要：Pyrolysis is a cost-effective and safe method for the disposal of radioactive spent *** this work,the catalytic effects of V_(2)O_(5) on the pyrolysis of cation exchange resin are investigated for the first *** results show that it is a better catalyst than others so far studied and achieves a lowering of final pyrolysis temperature and residual rate simultaneously when aided by physical *** maximum reductions of the final pyrolysis temperature and the residual rate are 173℃and 11.9%(in weight),*** the action of V_(2)O_(5),low-temperature(445℃)removal of partial sulfonic acid groups occurs and the pyrolysis of the resin copolymer matrix is *** is demonstrated by the analysis of pyrolysis residues at different temperatures by X-ray photoelectron spectroscopy(XPS)and element *** catalytic activity of V_(2)O_(5) is determined by effects both at acid sites and oxidation-reduction centers via H2-TPR(temperature programmed reduction),V_(2)-TPD(temperature programmed desorption),CV_(2)-TPD,and *** catalytic effect of oxidation-reduction centers in V_(2)O_(5) is achieved by close contact with the sulfur bond through chemisorption under the effect of acid sites.V_(2)O_(5) is also believed to be the reason for the removal of partial sulfonic acid groups at lower temperatures(445℃).V_(2)O_(5) is an effective catalyst for spent resin pyrolysis and can be further applied in industry.