Cherkasov, Nikolay, Ibhadon, Alex O. and Rebrov, Evgeny 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). pp. 1952-1960. doi:10.1039/C4LC01066C

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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.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH):	Combinatorial chemistry, Microreactors, Catalysis, Biotechnology
Journal or Publication Title:	Lab on a Chip
Publisher:	Royal Society of Chemistry
ISSN:	1473-0197
Official Date:	21 April 2015
Dates:	Date Event 21 April 2015 Published 18 February 2015 Available 18 February 2015 Accepted 10 September 2014 Submitted
Volume:	15
Number:	8
Page Range:	pp. 1952-1960
DOI:	10.1039/C4LC01066C
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Seventh Framework Programme (European Commission) (FP7), Royal Society International Joint Project
Grant number:	MAPSYN.eu no. CP-IP 309376, 2010/R.

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