Novel synthesis of thick wall coatings of titania supported Bi poisoned Pd catalysts and application in selective hydrogenation of acetylene alcohols in capillary microreactors

Cherkasov, Nikolay; Ibhadon, Alex O.; Rebrov, Evgeny V.

Abstract

Catalysis in microreactors allows reactions to be performed in a very small volume, reducing the environmental problems and greatly intensifying the processes through easy pressure control and the elimination of heat- and mass-transfer limitations. In this study, we report a novel method for the controlled synthesis of micrometre-thick mesoporous TiO2 catalytic coatings on the walls of long channels (>1 m) of capillary microreactors in a single deposition step. The method uses elevated temperature and introduces a convenient control parameter of the deposition rate (displacement speed controlled by a stepper motor), which allows deposition from concentrated and viscous sols without channel clogging. A capillary microreactor wall-coated with titania supported Bi-poisoned Pd catalyst was obtained using the method and used for the semihydrogenation of 2-methyl-3-butyn-2-ol providing 93 ± 1.5% alkene yield for 100 h without deactivation. Although the coating method was applied only for TiO2 deposition, it is nonetheless suitable for the deposition of volatile sols.

Citation

Cherkasov, N., Ibhadon, A. O., & Rebrov, E. V. (2015). Novel synthesis of thick wall coatings of titania supported Bi poisoned Pd catalysts and application in selective hydrogenation of acetylene alcohols in capillary microreactors. Lab on a chip, 15(8), 1952-1960. https://doi.org/10.1039/c4lc01066c

• Journal Article Type: Article
• Acceptance Date: Feb 18, 2015
• Online Publication Date: Feb 18, 2015
• Publication Date: Apr 21, 2015
• Deposit Date: Apr 6, 2016
• Publicly Available Date: Apr 6, 2016
• Journal: Lab on a chip
• Print ISSN: 1473-0197
• Publisher: Royal Society of Chemistry
• Peer Reviewed: Peer Reviewed
• Volume: 15
• Issue: 8
• Pages: 1952-1960
• DOI: https://doi.org/10.1039/c4lc01066c
• Keywords: Hydrogenation
• Public URL: https://hull-repository.worktribe.com/output/435099
• Publisher URL: http://pubs.rsc.org/en/Content/ArticleLanding/2015/LC/C4LC01066C#!divAbstract
• Contract Date: Apr 6, 2016