Removal of Acidic-Sulfur-Containing Components from Gasoline Fractions and Their Simulated Analogues Using Silica Gel Modified with Transition-Metal Carboxylates

Andrey O Okhlobystin; Igor L Eremenko; Valentina N Storozhenko; Kseniya V Oleinikova; Anna S Kamyshnikova; Konstantin P Pashchenko; Elena V Shinkar'; Ekaterina N Zorina-Tikhonova; Mikhail A Kiskin; Alexander E Baranchikov; Sergey Yu Kottsov; Nadezhda T Berberova

doi:10.1021/acsomega.1c02777

Removal of Acidic-Sulfur-Containing Components from Gasoline Fractions and Their Simulated Analogues Using Silica Gel Modified with Transition-Metal Carboxylates

ACS Omega. 2021 Aug 27;6(36):23181-23190. doi: 10.1021/acsomega.1c02777. eCollection 2021 Sep 14.

Affiliations

¹ Department of Chemistry, Astrakhan State Technical University, Astrakhan 414056, Russia.
² Department of Chemistry of Coordination Polynuclear Compounds, N.S. Kurnakov's Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia.

Abstract

The removal of acidic sulfur-containing components [hydrogen sulfide (H₂S) and alkanethiols or thiols (RSH)] from simulated mixtures and analogues of gasoline fractions with Zn(II), Cu(II), Co(II), and Ni(II) acetates, pivalates, and malonates applied on silica gel with various porosities under ultrasonic treatment in solution has been studied. The dependence of the adsorption of H₂S and RSH on the surface of silica gel modified by metal complexes with organic ligands on various factors (the pore size of the silica gel, the time of ultrasonic treatment, and the nature of carboxylate complexes) is established. The best results for the removal of total sulfur from the model mixture and an analogue of the gasoline fraction were obtained using silica gel modified with zinc pivalate (96%) and cobalt pivalate (95%). A waste-free method to desulfurize fuel with zinc pivalate based on the production of practically useful ZnS is suggested.