Preparation of Nano-Particle Pd/γ-Al2O3 Catalysts for Low-Temperature CO Oxidation by Solyated Metal Atom Impregnation Method

Abstract

Abstract:

Nano-particle Pd/γ-Al₂O₃ catalysts with different Pd content were prepared by solvated metal atom impregnation technique. The results of XRD and Chemisorption measurement showed that as the metal content increased the particle size of Palladium increased; but the diameter of Pd particles in all the Pd/γ-Al₂O₃ catalysts studied was in the range of 2.0-6.0nm. XPS study indicated that Paiiadium was in metallic slate. The Pd/γ-Al₂O₃ catalysts exhibited higher activity for CO oxidation at lower temperature. 100% CO conversion was achieved at 453K. As the particle size of Palladium increased the catalytic activity increased. The Pd/γ-Al₂O₃ catalyst with Pd panicle size of 2. Inm showed the highest activity.

Key words: Carbon Monoxide, Low-temperature Oxidation, Palladium, Solvated Metal Atom, Impreg-nation Method

CLC Number:

O643

TrendMD:

Yang Xiu-Lin, Huang Wei-Ping, Zhang Shou-Min, Zheng Xiu-Cheng, Li Bao-Qing, Wu Shi-Hua. Preparation of Nano-Particle Pd/γ-Al₂O₃ Catalysts for Low-Temperature CO Oxidation by Solyated Metal Atom Impregnation Method[J]. Chem. J. Chinese Universities, 2001, 22(S1): 1.

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Preparation of Nano-Particle Pd/γ-Al₂O₃ Catalysts for Low-Temperature CO Oxidation by Solyated Metal Atom Impregnation Method

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