The exquisite inserting way: Pd and perovskite on the preferential oxidation of CO or H-2
文献类型： 外文期刊
作者： Xu, Dong-Jie 1 ; Qiao, Lu-Yang 1 ; Zhou, Zhang-Feng 1 ; Wu, Juan 3 ; Ye, Run-Ping 4 ; Qin, Ye-Yan 1 ; Yao, Yuan-Gen 1 ;
作者机构： 1.Fujian Inst Res Struct Matter, Chinese Acad Sci, Key Lab Coal to Ethylene Glycol & Related Technol, Fuzhou 350002, Fujian, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Anhui Acad Agr Sci, Inst Cotton, Hefei 230001, Anhui, Peoples R China
4.Nanchang Univ, Sch Chem & Chem Engn, Nanchang 330031, Jiangxi, Peoples R China
关键词： Perovskite; Pd-inserted; Pd-impregnated; Preferential oxidation; Heterogeneous catalysis
期刊名称：MOLECULAR CATALYSIS （ 影响因子：5.089； 五年影响因子：4.788 ）
ISSN： 2468-8231
年卷期： 2022 年 524 卷
页码：
收录情况： SCI
摘要： Preferential oxidation of CO is an important reaction for the application of membrane fuel cells, while preferential oxidation of H-2 is the key process of coal-to-ethylene glycol technology in coal chemical industry. The pivot of the performance of catalysts used in preferential oxidation (PROX) is maximizing the selectivity to a single component while maintaining the high activity at the same time. Two types of catalysts with different interactions of Pd and perovskite support (LaMO3, M = Fe or Ni) were synthesized and applied in the preferential oxidation of CO or H-2. The catalyst (PLFOsg) with Pd element inserted into the LaFeO3 support surface carries the best catalytic activity and the highest H2O selectivity, whereas the performance of PLNOsg (Pd element inserted into LaNiO3) is inferior. TOFs and activation energies under the reaction condition are calculated. The characterization results explain that the different Pd species and O species are the critical factors of the catalytic performance, and it explains the reason for the excellent performance of Pd-inserted PLFOsg sample.
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