Ultrasonic Auxiliary Ozone Oxidation-Extraction Desulfurization: A Highly Efficient and Stable Process for Ultra-Deep Desulfurization.

Autor: Wang R; School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China., Zhang K; School of Environmental Science & Engineering, Shandong University, Qingdao 266237, China., Kozhevnikov IV; Department of Chemistry, The University of Liverpool, Liverpool L69 7ZD, UK.
Jazyk: angličtina
Zdroj: Molecules (Basel, Switzerland) [Molecules] 2022 Nov 15; Vol. 27 (22). Date of Electronic Publication: 2022 Nov 15.
DOI: 10.3390/molecules27227889
Abstrakt: For ultra-deep desulfurization of diesel fuel, this study applied the ultrasound-assisted catalytic ozonation process to the dibenzothiophene (DBT) removal process with four Keggin-type heteropolyacids (HPA) as catalysts and acetonitrile as extractant. Through experimental evaluations, H 3 PMo 12 O 40 was found to be the most effective catalyst for the oxidative removal of DBT. Under favorable operating conditions with a temperature of 0 °C, H 3 PMo 12 O 40 dosage of 2.5 wt.% of n -octane, and ultrasonic irradiation, DBT can be effectively removed from simulated diesel. Moreover, the reused catalyst exhibited good catalytic activity in recovery experiments. This desulfurization process has high potential for ultra-deep desulfurization of diesel.
Databáze: MEDLINE
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