Extractive oxidative desulfurization of model oil/crude oil using KSF montmorillonite-supported 12-tungstophosphoric acid  

作　　者：Ezzat Rafiee Sadegh Sahraei Gholam Reza Moradi 

机构地区：[1]Faculty of Chemistry, Razi University [2]Institute of Nano Science and Nano Technology, Razi University [3]Department of Chemical Engineering, Faculty of Engineering, Razi University

出　　处：《Petroleum Science》2016年第4期760-769,共10页石油科学（英文版）

基　　金：Razi University Research Council for support of this work

摘　　要：12-Tungstophosphoric acid（PW） supported on KSF montmorillonite, PW/KSF, was used as catalyst for deep oxidative desulfurization（ODS） of mixed thiophenic compounds in model oil and crude oil under mild conditions using hydrogen peroxide（H2O2） as an oxidizing agent. A one-factor-at-a-time method was applied for optimizing the parameters such as temperature, reaction time, amount of catalyst, type of extractant and oxidant-tosulfur compounds（S-compounds） molar ratio. The corresponding products can be easily removed from the model oil by using ethanol as the best extractant. The results showed high catalytic activity of PW/KSF in the oxidative removal of dibenzothiophene（DBT） and mixed thiophenic model oil under atmospheric pressure at 75 ℃ in a biphasic system. To investigate the oxidation and adsorption effects of crude oil composition on ODS, the effects of cyclohexene, 1,7-octadiene and o-xylene with different concentrations were studied.12-Tungstophosphoric acid（PW） supported on KSF montmorillonite, PW/KSF, was used as catalyst for deep oxidative desulfurization（ODS） of mixed thiophenic compounds in model oil and crude oil under mild conditions using hydrogen peroxide（H2O2） as an oxidizing agent. A one-factor-at-a-time method was applied for optimizing the parameters such as temperature, reaction time, amount of catalyst, type of extractant and oxidant-tosulfur compounds（S-compounds） molar ratio. The corresponding products can be easily removed from the model oil by using ethanol as the best extractant. The results showed high catalytic activity of PW/KSF in the oxidative removal of dibenzothiophene（DBT） and mixed thiophenic model oil under atmospheric pressure at 75 ℃ in a biphasic system. To investigate the oxidation and adsorption effects of crude oil composition on ODS, the effects of cyclohexene, 1,7-octadiene and o-xylene with different concentrations were studied.

关 键 词：Tungstophosphoric acid MONTMORILLONITE CATALYST Oxidative desulfurization Clean fuel 

分 类 号：TE624.55[石油与天然气工程—油气加工工程]