Dry reforming of methane on active and coke resistant Ni/Y_2Zr_2O_7 catalysts treated by dielectric barrier discharge plasma

作     者：Xiuzhong Fang Jie Lian Kaiwen Nie Xianhua Zhang Yanfeng Dai Xianglan Xu Xiang Wang Wenming Liu Changqing Li Wufeng Zhou 

作者机构：College of Chemistry Nanchang University Jiangxi Golden Century Advanced Materials Co. LtdNanchang 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2016年第25卷第5期

页      面：825-831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：supported by the National Natural Science Foundation of China (21567016, 21566022, 21263015) the Natural Science Foundation of Jiangxi Province (20151BBE50006, 20151BAB203024) the Education Department of Jiangxi Province (KJLD14005, GJJ150016) 

主　　题：Plasma treatment Y2Zr2O7 pyrochlore support Supported Ni catalysts Methane dry reforming Coke resistance 

摘      要：In this study, Ni/YZrOcatalysts prepared with impregnation method and treated by dielectric barrier discharge plasma(DBD) in different atmospheres have been investigated for methane dry reforming. It is revealed by H-TPR that plasma treatment can enhance the interaction between Ni O/Ni particles and the YZrOpyrochlore support. Therefore, catalysts with smaller Ni O and Ni grains sizes, higher metallic Ni active surface areas can be achieved, as evidenced by XRD, TEM and Hadsorption-desorption measurements. As a consequence, the plasma-treated catalysts show significantly improved activity, stability and coke resistance, as testified by the TEM and TGA-DSC results. Plasma treatment in H/Ar gas mixture is found to be the best condition to prepare Ni/YZrO, which can be used to obtain a catalyst with the highest activity, stability and most potent coke resistance. It is believed that the smaller Ni grain size and higher metallic Ni active surface area induced by plasma treatment are the inherent reasons accounting for the promoted reaction performance of the Ni/YZrOpyrochlore catalysts.