Deep Oxidative Desulfurization of Fuels in the Presence of Bronsted Acidic Polyoxometalate-Based Ionic Liquids.

ABSTRACT: Polyoxometalate-based ionic liquid hybrid materials with a pyridinium cation, containing Brönsted acid sites, were synthesized and used as catalysts for the oxidation of model and real diesel fuels. Keggin-type polyoxometalates with the formulae [PMo12O40]3-, [PVMo11O40]4-, [PV2Mo10O40]4-, [PW12O40]3- were used as anions. It was shown that increasing the acid site strength leads to an increase of dibenzothiophene conversion to the corresponding sulfone. The best results were obtained in the presence of a catalyst, containing a nicotinic acid derivative as cation and phosphomolybdate as anion. The main factors affecting the process consisting of catalyst dosage, temperature, reaction time, oxidant dosage were investigated in detail. Under optimal conditions full oxidation of dibenzothiophen

SUBMITTER: Akopyan A 

PROVIDER: S-EPMC7037028 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature