Effect of CeO2 on Oxidation of CO over Pd/Al2O3 Catalyst

Abstract

Abstract: Surface reaction properties of CO,the desorption properties of surface oxygen over Pd catalysts and their carriers were investigated by means of TPSR-MSand TPD-MS.The oxidation activity of COon these catalysts was also examined at different concentrations of oxygen.It was found that the desorbed amount of CO₂ and the order of peak temperature were in good agreement with their activities.The amount of CO₂ in desorbed product on oxidized alumina-supported Pd was more than that on reduced alumina-supported Pd, the disproportionation reaction of COon H₂-reduced Pd/Al₂O₃ would form carbon and CO₂. The results of O₂-TPDand CO-TPSRshowed that the addition of CeO₂ would promote the desorption of surface oxygen and the surface reaction of COon Pd/Al₂O₃.

Key words: Catalyst, Pd, CeO₂, O₂-TPD, CO-TPSR

TrendMD:

ZHOU Ren-Xian, XU Xiao-Ling, ZHENG Xiao-Ming. Effect of CeO₂ on Oxidation of CO over Pd/Al₂O₃ Catalyst[J]. Chem. J. Chinese Universities, 1996, 17(3): 443.

[1]	YANG Jingyi, LI Qinghe, QIAO Botao. Synergistic Catalysis Between Ir Single Atoms and Nanoparticles for N₂O Decomposition [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220388.
[2]	LIN Gaoxin, WANG Jiacheng. Progress and Perspective on Molybdenum Disulfide with Single-atom Doping Toward Hydrogen Evolution [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220321.
[3]	REN Shijie, QIAO Sicong, LIU Chongjing, ZHANG Wenhua, SONG Li. Synchrotron Radiation X-Ray Absorption Spectroscopy Research Progress on Platinum Single-atom Catalysts [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220466.
[4]	TENG Zhenyuan, ZHANG Qitao, SU Chenliang. Charge Separation and Surface Reaction Mechanisms for Polymeric Single-atom Photocatalysts [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220325.
[5]	WANG Ruyue, WEI Hehe, HUANG Kai, WU Hui. Freezing Synthesis for Single Atom Materials [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220428.
[6]	CHU Yuyi, LAN Chang, LUO Ergui, LIU Changpeng, GE Junjie, XING Wei. Single-atom Cerium Sites Designed for Durable Oxygen Reduction Reaction Catalyst with Weak Fenton Effect [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220294.
[7]	QIN Yongji, LUO Jun. Applications of Single-atom Catalysts in CO₂ Conversion [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220300.
[8]	FAN Jianling, TANG Hao, QIN Fengjuan, XU Wenjing, GU Hongfei, PEI Jiajing, CEHN Wenxing. Nitrogen Doped Ultra-thin Carbon Nanosheet Composited Platinum-ruthenium Single Atom Alloy Catalyst for Promoting Electrochemical Hydrogen Evolution Process [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220366.
[9]	LIN Zhi, PENG Zhiming, HE Weiqing, SHEN Shaohua. Single-atom and Cluster Photocatalysis： Competition and Cooperation [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220312.
[10]	CHENG Qian, YANG Bolong, WU Wenyi, XIANG Zhonghua. S-doped Fe-N-C as Catalysts for Highly Reactive Oxygen Reduction Reactions [J]. Chem. J. Chinese Universities, 2022, 43(9): 20220341.
[11]	WEI Chunhong, JIANG Qian, WANG Panpan, JIANG Chengfa, LIU Yuefeng. Atomic Scale Investigation of Pt Atoms/clusters Promoted Co-catalyzed Fischer-Tropsch Synthesis [J]. Chem. J. Chinese Universities, 2022, 43(8): 20220074.
[12]	TAN Yan, YU Shen, LYU Jiamin, LIU Zhan, SUN Minghui, CHEN Lihua, SU Baolian. Efficient Preparation of Mesoporous γ-Al₂O₃ Microspheres and Performance of Pd-loaded Catalysts [J]. Chem. J. Chinese Universities, 2022, 43(8): 20220133.
[13]	ZHANG Xinxin, XU Di, WANG Yanqiu, HONG Xinlin, LIU Guoliang, YANG Hengquan. Effect of Mn Promoter on CuFe-based Catalysts for CO₂ Hydrogenation to Higher Alcohols [J]. Chem. J. Chinese Universities, 2022, 43(7): 20220187.
[14]	ZHAO Runyao, JI Guipeng, LIU Zhimin. Efficient Electrocatalytic CO₂ Reduction over Pyrrole Nitrogen-coordinated Single-atom Copper Catalysts [J]. Chem. J. Chinese Universities, 2022, 43(7): 20220272.
[15]	ZHOU Leilei, CHENG Haiyang, ZHAO Fengyu. Research Progress of CO₂ Hydrogenation over Pd-based Heterogeneous Catalysts [J]. Chem. J. Chinese Universities, 2022, 43(7): 20220279.

Effect of CeO₂ on Oxidation of CO over Pd/Al₂O₃ Catalyst

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments