Preparation and Characterization of Hydrophobic Platinum Catalyst for Hydrogen Isotope Exchange between Hydrogen and Liquid Water

doi:10.3724/SP.J.1077.2014.13350

Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (4): 387-392.DOI: 10.3724/SP.J.1077.2014.13350

• Research Paper • Previous Articles Next Articles

Preparation and Characterization of Hydrophobic Platinum Catalyst for Hydrogen Isotope Exchange between Hydrogen and Liquid Water

YE Lin-Sen^1,2, LUO De-Li¹, YANG Wan³, GUO Wen-Sheng³, XU Qin-Yin¹, LUO Li-Zhu¹

(1. Science and Technology on Surface Physics and Chemistry Laboratory, Jiangyou 621700, China; 2. School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230029, China; 3. China Academy of Engineering Physics, Mianyang 621907, China)

Received:2013-07-04 Revised:2013-09-12 Published:2014-04-20 Online:2014-03-24
Supported by:
National Magnetic Confinement Fusion Science Program (2011GB111000, 2013GB110006); Foundation of Science and Technology on Surface Physics and Chemistry Laboratory of China (ZDXKFZ201208)

Abstract

Abstract: The carbon-supported Pt catalyst was synthesized via the impregnation-liquid-reduction method. Polytetrafluoroethene (PTFE) was used to bind the carbon-supported Pt catalyst and the inert carrier and waterproof the catalyst, where porous ceramic spheres (5.5 mm in diameter) were used as the inert carrier for hydrophobic catalysts (0.8% Pt-C-PTFE). The physical properties of the catalyst were characterized by X-ray photoelectron spectroscope (XPS), transmission electron microscope (TEM) and scanning electron microscope (SEM), and the separation of deuterium from liquid water was carried out by liquid phase catalytic exchange (LPCE) reactions. As a result, the mean particle size of Pt particles in Pt/C catalyst is about 2.4 nm when the Pt loading is less than 20%. The Pt⁰, Pt²⁺ and Pt⁴⁺ are co-existed in the catalyst, with Pt0 content of about 60%. It is also found that the content of loaded-Pt, catalyst packed ratio and catalytic exchange temperature are the main factors in determining the overall mass transfer coefficient of hydrogen-water diffusion and exchange, which occur on Pt and its oxides active sites.

Key words: Pt/C, hydrophobic catalyst, liquid phase catalytic exchange, overall mass transfer coefficient

CLC Number:

O643

YE Lin-Sen, LUO De-Li, YANG Wan, GUO Wen-Sheng, XU Qin-Yin, LUO Li-Zhu. Preparation and Characterization of Hydrophobic Platinum Catalyst for Hydrogen Isotope Exchange between Hydrogen and Liquid Water[J]. Journal of Inorganic Materials, 2014, 29(4): 387-392.

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Preparation and Characterization of Hydrophobic Platinum Catalyst for Hydrogen Isotope Exchange between Hydrogen and Liquid Water

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