Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P-Mo-V Heteropoly Acids in the Presence of Aldehyde

Ghubayra, Reem, Hindle, Rachel, Yahya, Rana, Kozhevnikova, Elena F ORCID: 0000-0001-8242-7945 and Kozhevnikov, Ivan V ORCID: 0000-0003-2453-5256 (2021) Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P-Mo-V Heteropoly Acids in the Presence of Aldehyde CATALYSTS, 11 (8). 988-. ISSN 2073-4344, 2073-4344

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Abstract

Aerobic oxidative desulfurization (ODS) of model liquid fuel (dodecane spiked with diben-zothiophene (DBT)) was carried out in the presence of bulk and supported Keggin-type heteropoly acids H<inf>3+n</inf>PMo<inf>12−n</inf>V<inf>n</inf>O<inf>40</inf> (HPA-n, n = 0–3) as heterogeneous catalysts and benzaldehyde as a sacrifi-cial reductant. In the presence of bulk H<inf>4</inf>PMo<inf>11</inf>VO<inf>40</inf> (HPA-1), 100% of DBT was removed from fuel (converted to DBT sulfone) at 60^◦C and ambient air pressure. Multiple catalyst reuse without loss of activity was demonstrated. The ODS reaction was strongly inhibited by radical scavengers. An unbranched radical chain mechanism was proposed.

Item Type:	Article
Uncontrolled Keywords:	aerobic oxidative desulfurization, liquid fuel, dibenzothiophene, heteropoly acid, heterogeneous catalysis
Divisions:	Faculty of Science & Engineering > School of Physical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	03 Dec 2021 16:06
Last Modified:	16 Jun 2026 09:35
DOI:	10.3390/catal11080988
Open Access URL:	https://www.mdpi.com/2073-4344/11/8/988
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3144532
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