Catalytic wet oxidation of N,N-dimethyl formamide over ruthenium supported on CeO_2 and Ce_(0.7)Zr_(0.3)O_2 catalysts

作     者：Jiawen Gong Dongzhi Li Li Wang Wangcheng Zhan Yanglong Guo Yunsong Wang Yun Guo 

作者机构：Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis School of Chemistry & Molecular Engineering East China University of Science and Technology 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2019年第37卷第3期

页      面：265-272页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：This project supported by the National Key Research and Development Program of China(2016YFC0204300) the National Natural Science Foundation of China(21171055,21333003,21571061) the"Shu Guang"Project of the Shanghai Municipal Education Commission(12SG29) the Commission of Science and Technology of Shanghai Municipality(15DZ1205305) 

主　　题：Catalytic wet oxidation N,N-dimethyl formamide Ru Degradation Catalyst deactivation and regeneration Rare earths 

摘      要：A series of Ru supported on CeO_2 and Ce_(0.7)Zr_(0.3)O_2(CeZrO) was prepared by incipient-wet impregnation method and investigated in the catalytic wet oxidation of N,N-dimethyl formamide(DMF) in batch reactor. The physicochemical property of the catalysts was characterized by Brunauer-Emmett-Teller(BET), X-ray diffraction(XRD), H_2 temperature-programmed reduction(H_2-TPR), X-ray photoelectron spectroscopy(XPS) and thermogravimetry(TG). Compared with 3%Ru/CeO_2, 3%Ru/Ce_(0.7)Zr_(0.3)O_2 catalyst exhibits much higher performance for DMF degradation due to the promotion of Ru dispersion and the transfer of active oxygen, and 99% DMF conversion and 97% COD elimination are obtained at 453 K,2.5 MPa oxygen pressure after 5 h. The reaction mechanism of DMF degradation was suggested. The carbonaceous species deposition and oxidation of Ru can be responsible for catalyst deactivation. And the catalyst activity can be recovered by air calcination and H_2 reduction.