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

Lingchao Wei; Fu’An Wang; Yi Liu; Yongli Chai

Korean Journal of Chemical Engineering, Vol.26, No.1, 42-47, January, 2009

DOI10.1007/s11814-009-0008-y Export Citation

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

Lingchao Wei^{1, 2, †}, Fu’An Wang¹, Yi Liu³, and 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

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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 properties.

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

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[1] Wei LC, Wang FA, Liu Y, Natural Gas Chemical Industry, 2, 11 (2006)

[2] Wei LC, Wang FA, Liu Y, Chemical Reaction Engineering and Technology, 6, 497 (2006)

[3] Gutierrez MC, Rubio J, Rubio F, J. Chromatogr. A, 845, 53 (1999)

[4] Hamieh T, Fadlallah MB, Schultz J, J. Chromatogr. A, 969, 37 (2002)

[5] Buckton G, Dove JW, Davies P, Int. J. Pharm., 1, 13 (1999)

[6] Gavril D, Georgaka A, Loukopoulos V, Karaiskakis G, J. Chromatogr. A, 1164, 271 (2007)

[7] Witkiewicz Z, Oszczudlowski J, Repelewicz M, J. Chromatogr. A, 1062, 155 (2005)

[8] Fekete E, Moczo J, Pukansky B, J. Colloid Interface Sci., 269(1), 143 (2004)

[9] Lywood JW, Twigg MV, Eur. Patent, 0,362,648 (1990)

[10] Lu PZ, Dai CZ, Zhang XM, The foundation of chromatogram theory, The Science Press, Beijing (1997)

[11] Wang FA, Jiang YL, Molecule thermodynamics and chromatogram retention, Meteorology Press, Beijing (2001)

[12] Askin A, Bilgic C, Chemical Engineering Journal, 1-3, 159 (2005)

[13] Zhang CL, Wang FA, Wang Y, Korean J. Chem. Eng. Data, 5, 1563 (2007)

[14] Zou QC, Zhang JZ, Zhang YH, Chinese Journal of Analytical Chemistry, 9, 1012 (2001)

[15] Ito K, Guillet E, Macromolecules, 12, 1163 (1979)