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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received March 11, 2008
Accepted June 24, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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LB energy-saving high temperature shift catalyst and its adsorption thermodynamics

Lingchao Wei^{1 2†} Fu’An Wang¹ Yi Liu³ Yongli Chai³

¹College of Chemical Engineering, Zhengzhou University, Zhengzhou 450002, Henan, China ²Henan Key Laboratory of Chemical Catalysis, Zhengzhou 450052, Henan, China ³Henan Key Laboratory of Chemical Catalysis, Zhengzhou 450052, Henan, China, Korea

Korean Journal of Chemical Engineering, January 2009, 26(1), 42-47(6), 10.1007/s11814-009-0008-y

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Abstract

This study prepared an LB energy-saving high temperature shift catalyst by optimizing its prepare parameters with artificial neural network, and measured its catalytic activities at various steam-gas ratios. It shows that the LB catalyst performs well at a lower steam-gas ratio. The chromatographic retention parameters of CO, CO2, and H2O on LB catalyst were experimentally determined by means of inverse gas chromatography (IGC). Adsorption enthalpies, Gibbs adsorption free energies and adsorption entropies of different gases were estimated by their retention volumes in infinite dilution region. The interaction parameters (χ) between absorbate gases and LB catalyst were calculated according to Flory-Huggins theory, and were inversely linear with temperature. The thermodynamics mechanism of the adsorption process was discussed from the view of the microcosmic factors of molecular structure and thermodynamic_x000D_ properties.

Keywords

Energy-saving High Temperature Shift Catalyst Catalytic Activity Adsorption Thermodynamics Inverse Gas Chromatography Water Gas Shift

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