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Catalytic properties of Pt/Al2O3 catalysts in the aqueous-phase reforming of ethylene glycol: Effect of the alumina support

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Abstract

The influence of the alumina support on the catalytic activity of Pt/Al2O3 catalysts in aqueous phase reforming of ethylene glycol to hydrogen was studied. The catalysts were prepared by impregnation of γ-, δ-, and α-alumina with H2PtCl6. The highest rate of hydrogen production (452 μmol min−1 g−1) obtained with the Pt/α-Al2O3 catalyst can be related to the highest extent of dispersion of Pt on α-Al2O3. XPS, TEM-EDX and TPR-H2 measurements showed the absence of chloride-containing surface complexes in the Pt/α-Al2O3 catalyst. However, chloride-containing entities were found on the surface of Pt/γ-Al2O3 and Pr/δ-Al2O3 catalysts. When chloride ions are removed chlorinated Pt species facilitate the sintering of Pt crystallites and in this way affect the extent of Pt dispersion. Moreover, depending upon the particular crystalline form, alumina atoms have different coordination and alumina surfaces contain varying amounts of OH groups of different nature which affect the interaction between Pt and the support.

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Authors and Affiliations

  1. Key Lab for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai, P. R. China

    Xiaohuin Liu, Yong Guo, Wenjie Xu, Yanqin Wang, Xueqing Gong, Yanglong Guo, Yun Guo & Guanzhong Lu

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  1. Xiaohuin Liu
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  2. Yong Guo
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  3. Wenjie Xu
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  4. Yanqin Wang
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  5. Xueqing Gong
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  6. Yanglong Guo
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  7. Yun Guo
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  8. Guanzhong Lu
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Correspondence to Yanqin Wang.

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Liu, X., Guo, Y., Xu, W. et al. Catalytic properties of Pt/Al2O3 catalysts in the aqueous-phase reforming of ethylene glycol: Effect of the alumina support. Kinet Catal 52, 817–822 (2011). https://doi.org/10.1134/S0023158411060115

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  • DOI: https://doi.org/10.1134/S0023158411060115

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