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Probing pore blocking effects on multiphase reactions within porous catalyst particles using a discrete model

Ye, G; Zhou, X; Yuan, W; Coppens, MO; (2016) Probing pore blocking effects on multiphase reactions within porous catalyst particles using a discrete model. AIChE Journal , 62 (2) pp. 451-460. 10.1002/aic.15095. Green open access

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Abstract

© 2015 American Institute of Chemical Engineers. A discrete model coupling mass transfer, reaction, and phase change in porous catalyst particles is proposed to probe pore blocking effects on multiphase reactions. This discrete model is validated by comparing the results with experiments and those obtained using a continuum model, for the hydrogenation of benzene to cyclohexane in Pd/γ-alumina catalyst particles. The results show that pore blocking has a significant effect on the effectiveness factor and can contribute to up to 50% of the hysteresis loop area for multiphase reactions in porous catalysts, indicating that pore blocking must be accounted for. Moreover, the pore blocking effects are significantly enhanced when the pore network is poorly connected and the pore-size distribution is wide, while the pore blocking effects are insensitive to the volume-averaged pore size. Multiphase catalyst material characterization and design should account for this effect.

Type: Article
Title: Probing pore blocking effects on multiphase reactions within porous catalyst particles using a discrete model
Open access status: An open access version is available from UCL Discovery
DOI: 10.1002/aic.15095
Publisher version: http://dx.doi.org/10.1002/aic.15095
Language: English
Additional information: This is the peer reviewed version of the following article: Ye, G; Zhou, X; Yuan, W; Coppens, MO; (2016) Probing pore blocking effects on multiphase reactions within porous catalyst particles using a discrete model. AIChE Journal , 62 (2) pp. 451-460., which has been published in final form at http://dx.doi.org/10.1002/aic.15095. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. http://olabout.wiley.com/WileyCDA/Section/id-820227.html#terms
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/1476469
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