Use of Intraparticle Mass Transfer Parameters as a Design Tool for Catalyst Pellets

doi:10.1016/S1872-2067(11)60406-3

Chinese Journal of Catalysis ›› 2012, Vol. 33 ›› Issue (7): 1166-1175.DOI: 10.1016/S1872-2067(11)60406-3

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Use of Intraparticle Mass Transfer Parameters as a Design Tool for Catalyst Pellets

L. PETROV1,*, M. DAOUS1, Y. ALHAMED1, A. AL-ZAHRANI1, Kh. MAXIMOV2

1SABIC Chair in Catalysis, Chemical and Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, PO Box 80204, Jeddah 21589, Kingdom of Saudi Arabia; 2Institute of Catalysis, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria

Received:2012-02-02 Revised:2012-05-02 Online:2012-06-21 Published:2012-06-21

Abstract

Abstract: A chromatographic method and a dynamic Wicke-Kallenbach method (DMWK) were used to determine the diffusion characteristics of two industrial copper containing catalysts. The first catalyst was used in nitrobenzene hydrogenation to aniline and the second was used in a low temperature water-gas shift reaction. Experimental results show that application of these two methods leads to similar results. Experimental data obtained allow for monitoring changes in the texture of the catalyst grains and intraparticle diffusivity of gaseous reagents at different states of the catalyst activity and use, which can be used as criteria for designing optimal industrial catalyst pellets.

Key words: effective diffusion coefficient, tortuosity, copper catalyst, pellet design

L. PETROV, M. DAOUS, Y. ALHAMED, A. AL-ZAHRANI, Kh. MAXIMOV. Use of Intraparticle Mass Transfer Parameters as a Design Tool for Catalyst Pellets[J]. Chinese Journal of Catalysis, 2012, 33(7): 1166-1175.

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Use of Intraparticle Mass Transfer Parameters as a Design Tool for Catalyst Pellets

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