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Citation: Xiao Tian-Cun, An Li-Dun, Zhang bing, Jiang Zhi-Cheng. Effect of Sulfur Species on H₂ Adsorption on Supported Palladium Catalyst[J]. Acta Physico-Chimica Sinica, ;1992, 8(04): 470-475. doi: 10.3866/PKU.WHXB19920409 shu

Effect of Sulfur Species on H₂ Adsorption on Supported Palladium Catalyst

1.
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Received Date: 14 February 1991
Available Online: 15 August 1992

A series of supported palladium catalysts were prepared with impregnating method. SO_4~(2-) was introduced by dipping Al_2O_3 into dilute H_2SO_4 solution for the preparation of Pd/Al_2O_3--SO_4 or impregnating Pd/Al_2O_3 with a series of K_2SO_4 solutions for Pd/SO_4~(2-)/Al_2O_3 as catalysts. X-ray photoelectron spectroscopy was employed to measure the states of sulfur and palladium before and after the catalysts were treated under different atmospheres. Temperature programmed desorption-mass spectroscopy (TPD-MS) was used to investigate the effect of different sulfur species and atmosphere on H_2 adsorption on the catalysts. The results showed as follows: The influence of sulfur species upon H_2 desorption declined in a order as S_2~(2-), S~(2-) and SO_4~(2-), and the effect of the former two was more distinct than SO_4~(2-). Their behaviors were in accord with the evaluation of the catalyst for H_2-O_2 reaction, which may be interpreted with the molecular orbital theory.
- Pd/Al₂O₃ catalysts; Sulfur species; H₂ adsorption; α、β₁ and β₂ adsorbed hydrogen
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沈阳化工大学材料科学与工程学院沈阳 110142

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Effect of Sulfur Species on H2 Adsorption on Supported Palladium Catalyst

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通讯作者: 陈斌, bchen63@163.com

Effect of Sulfur Species on H₂ Adsorption on Supported Palladium Catalyst