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

Aerobic oxidative desulfurization (ODS) of model liquid fuel (dodecane spiked with dibenzothiophene (DBT)) was carried out in the presence of bulk and supported Keggin-type heteropoly acids H3+nPMo12-nVnO40 (...

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Main Authors:	Reem Ghubayra, Rachel Hindle, Rana Yahya, Elena F. Kozhevnikova, Ivan V. Kozhevnikov
Format:	Article
Language:	English
Published:	MDPI AG 2021-08-01
Series:	Catalysts
Subjects:	aerobic oxidative desulfurization liquid fuel dibenzothiophene heteropoly acid heterogeneous catalysis
Online Access:	https://www.mdpi.com/2073-4344/11/8/988

id	doaj-de50f30c09db435387e9b931cc513553
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spelling	doaj-de50f30c09db435387e9b931cc5135532021-08-26T13:36:43ZengMDPI AGCatalysts2073-43442021-08-011198898810.3390/catal11080988Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of AldehydeReem Ghubayra0Rachel Hindle1Rana Yahya2Elena F. Kozhevnikova3Ivan V. Kozhevnikov4Department of Chemistry, Faculty of Science, Jazan University, Jazan 45142, Saudi ArabiaDepartment of Chemistry, University of Liverpool, Liverpool L69 7ZD, UKDepartment of Chemistry, College of Science, University of Jeddah, Jeddah 23218, Saudi ArabiaDepartment of Chemistry, University of Liverpool, Liverpool L69 7ZD, UKDepartment of Chemistry, University of Liverpool, Liverpool L69 7ZD, UKAerobic oxidative desulfurization (ODS) of model liquid fuel (dodecane spiked with dibenzothiophene (DBT)) was carried out in the presence of bulk and supported Keggin-type heteropoly acids H<sub>3+n</sub>PMo<sub>12-n</sub>V<sub>n</sub>O<sub>40</sub> (HPA-n, n = 0–3) as heterogeneous catalysts and benzaldehyde as a sacrificial reductant. In the presence of bulk H<sub>4</sub>PMo<sub>11</sub>VO<sub>40</sub> (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.https://www.mdpi.com/2073-4344/11/8/988aerobic oxidative desulfurizationliquid fueldibenzothiopheneheteropoly acidheterogeneous catalysis
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Reem Ghubayra Rachel Hindle Rana Yahya Elena F. Kozhevnikova Ivan V. Kozhevnikov
spellingShingle	Reem Ghubayra Rachel Hindle Rana Yahya Elena F. Kozhevnikova Ivan V. Kozhevnikov Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde Catalysts aerobic oxidative desulfurization liquid fuel dibenzothiophene heteropoly acid heterogeneous catalysis
author_facet	Reem Ghubayra Rachel Hindle Rana Yahya Elena F. Kozhevnikova Ivan V. Kozhevnikov
author_sort	Reem Ghubayra
title	Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde
title_short	Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde
title_full	Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde
title_fullStr	Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde
title_full_unstemmed	Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde
title_sort	aerobic oxidative desulfurization of liquid fuel catalyzed by p–mo–v heteropoly acids in the presence of aldehyde
publisher	MDPI AG
series	Catalysts
issn	2073-4344
publishDate	2021-08-01
description	Aerobic oxidative desulfurization (ODS) of model liquid fuel (dodecane spiked with dibenzothiophene (DBT)) was carried out in the presence of bulk and supported Keggin-type heteropoly acids H<sub>3+n</sub>PMo<sub>12-n</sub>V<sub>n</sub>O<sub>40</sub> (HPA-n, n = 0–3) as heterogeneous catalysts and benzaldehyde as a sacrificial reductant. In the presence of bulk H<sub>4</sub>PMo<sub>11</sub>VO<sub>40</sub> (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.
topic	aerobic oxidative desulfurization liquid fuel dibenzothiophene heteropoly acid heterogeneous catalysis
url	https://www.mdpi.com/2073-4344/11/8/988
work_keys_str_mv	AT reemghubayra aerobicoxidativedesulfurizationofliquidfuelcatalyzedbypmovheteropolyacidsinthepresenceofaldehyde AT rachelhindle aerobicoxidativedesulfurizationofliquidfuelcatalyzedbypmovheteropolyacidsinthepresenceofaldehyde AT ranayahya aerobicoxidativedesulfurizationofliquidfuelcatalyzedbypmovheteropolyacidsinthepresenceofaldehyde AT elenafkozhevnikova aerobicoxidativedesulfurizationofliquidfuelcatalyzedbypmovheteropolyacidsinthepresenceofaldehyde AT ivanvkozhevnikov aerobicoxidativedesulfurizationofliquidfuelcatalyzedbypmovheteropolyacidsinthepresenceofaldehyde
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Aerobic Oxidative Desulfurization of Liquid Fuel Catalyzed by P–Mo–V Heteropoly Acids in the Presence of Aldehyde

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