Efficient catalytic performance of tetra-alkyl orthotitanates for the oxidative desulfurization of dibenzothiophene at room temperature - 17/12/18

Doi : 10.1016/j.crci.2018.11.008

Xiaolin Li ^a, Hui Qi ^b, Wei Zhou ^c, Wei Xu ^d, Yinyong Sun ^a,^⁎
^a MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
^b The Second Hospital of Jilin University, Changchun 130041, China
^c Key Laboratory of Functional Inorganic Material Chemistry, Heilongjiang University, Ministry of Education, Harbin 150080, China
^d State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China

^∗Corresponding author.

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Abstract

Desulfurization of fuel oil is of great importance for producing clean energy. In this study, we report that tetra-alkyl orthotitanates exhibited efficient catalytic performance in the oxidative desulfurization of dibenzothiophene. The sulfur content in model oil (1000 ppmw) could be reduced to less than 10 ppmw within 10 min at room temperature and ambient pressure. In addition, the formed sulfones can be easily separated from the oil phase without extraction process. This work will provide a basis for the design of novel oxidative desulfurization catalysts with high desulfurization efficiency.

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Keywords : Liquid-phase oxidation, Desulfurization, Environmental catalysis, Heterogeneous catalysis, Dibenzothiophene, Fuel oil