GRR制备Pd-CeO_2/Au/CNTs甲酸盐电氧化催化剂:高金属利用率及抗中毒性能  

Fabricating Pd/CeO_2 Interfaces on Au Particles via Galvanic Replacement Reaction to Simultaneously Enhance Pd Utilization and Anti-Poisoning Performance for Formate Oxidation

作　　者：王建设[1] 马云 程相林[1] 赵建宏[1] 宋成盈[1] 王留成[1] WANG Jian-she;MA Yun;CHENG Xiang-lin;ZHAO Jian-hong;SONG Cheng-ying;WANG Liu-cheng(Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]郑州大学,郑州450001

出　　处：《新能源进展》2018年第4期261-266,共6页Advances in New and Renewable Energy

基　　金：国家自然科学基金项目(U1304215);河南省自然科学基金项目(182300410263)

摘　　要：为提高贵金属Pd的利用率,通过Cu欠电位沉积及Cu-Pd置换反应制备了具有单原子层Pd的Pd-Au/CNTs催化剂,并进一步引入CeO_2制得Pd-CeO_2/Au/CNTs催化剂。与Pd-Au/CNTs相比,Pd-CeO_2/Au/CNTs在保证高活性的同时,抗中毒性能显著提升,在Au表面构建单层Pd并与CeO_2形成界面同时提高了Pd的利用率及抗毒性。To improve the utilization of noble metal catalysts, Pd deposition on Au nanoparticles supported by carbon nanotubes （CNTs） via galvanic replacement reaction （GRR） was explored to prepare Pd-Au/CNTs catalysts with high Pd utilization. CeO2 was introduced on Au surface to prepare Pd-CeO2/Au/CNTs catalysts further. Compared with Pd-Au/CNTs, not only the catalytic activity for formate oxidation but also the anti-poisoning performances were improved. Results indicated that, the utilization of Pd and the anti-poisoning performances of the catalysts were improved by the monolayer Pd on Au surface and the interfaces between Pd and CeO2, simultaneously.

关 键 词：PD催化剂 利用率 抗中毒性 CEO2 

分 类 号：TK91[动力工程及工程热物理] O416[理学—理论物理]