title: Ultra-deep desulfurization via reactive adsorption on peroxophosphomolybdate/agarose hybrids.
abstract: A catalyst system composed of peroxophosphomolybdates as catalytic center and agarose as matrix material had been designed. The [C16H33N(CH3)3]3[PO4{MoO(O2)2}4]/agarose (C16PMo(O2)2/agarose) hybrid was found to be active for oxidation desulfurization (ODS) of dibenzothiophene (DBT) or real fuel into corresponding sulfone by H2O2 as an oxidant, while the sulfur content could be reduced to 5ppm. The higher activity comes from its components including [PO4{MoO(O2)2}4] catalytic sites, the hydrophobic quaternary ammonium cation affinity to low polarity substrates, and agarose matrix affinity to H2O2 and sulfone. During the oxidative reaction, the mass transfer resistance between H2O2 and organic sulfurs could be decreased and the reaction rate could increase by the assistance of agarose and hydrophobic tails of [C16H33N(CH3)3]3[PO4{MoO(O2)2}4]. Meanwhile, the oxidative products could be adsorbed by agarose matrix to give clean fuel avoiding the post-treatment. In addition, the hybrid was easily regenerated to be reused.
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
authors.forename: Jian
authors.initials: J
authors.lastname: Xu
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
authors.forename: Huacheng
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
authors.forename: Shengtian
authors.initials: S
authors.lastname: Wang
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
authors.forename: Fang
authors.initials: F
authors.lastname: Luo
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China.
authors.forename: Yunyu
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Key Lab of Polyoxometalate Science of Ministry of Education, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR China. Electronic address: wangxh665@nenu.edu.cn.
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Wang
authors.affiliation: Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130024, PR China.
authors.forename: Zijiang
authors.initials: Z
authors.lastname: Jiang
mesh_terms: D000327:Adsorption; D002384:Catalysis; D052918:Environmental Restoration and Remediation; D006861:Hydrogen Peroxide / Q000737:chemistry; D008982:Molybdenum / Q000737:chemistry*; D010084:Oxidation-Reduction; D010756:Phosphoric Acids / Q000737:chemistry*; D012685:Sepharose / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry / Q000302:isolation & purification*; D013876:Thiophenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010756:Phosphoric Acids; D013876:Thiophenes; D013455:Sulfur; D008982:Molybdenum; D012685:Sepharose; D006861:Hydrogen Peroxide; C003125:phosphomolybdic acid; C016366:dibenzothiophene
keywords: Adsorption; Desulfurization; Heterogeneous catalysis; Oxidation; Peroxophosphomolybdate