Immobilization of LaW 10 onto Ionic‐Liquid‐Modified Mesoporous Silica: Deep Desulfurization with Zero‐Order Reaction Kinetics

The polyoxometalate (POM) cluster Na 7 H 2 LaW 10 O 36 ⋅32 H 2 O (denoted LaW 10 ) is immobilized onto dihydroimidazolium‐based ionic‐liquid (IL)‐modified mesoporous silica, resulting in the formation of a new catalyst: LaW 10 /IL‐SiO 2 . Compared with other reported extractive catalytic oxidative desulfurization (ECODS) systems, LaW 10 /IL‐SiO 2 has the following advantages: 1) the heterogeneous catalyst LaW 10 /IL‐SiO 2 achieves deep desulfurization of dibenzothiophene (DBT), benzothiophene (BT), and 4,6‐dimethyldibenzothiophene (4,6‐DMDBT) in 25, 30, and 25 min, respectively, under mild conditions; 2) deep desulfurization of DBT follows zero‐order reaction kinetics; 3) there is no need to add ionic liquid each time the catalyst is reused; 4) the catalyst can be separated easily by filtration and reused at least ten times without a decrease in catalytic efficiency. As such, LaW 10 /IL‐SiO 2 shows great potential for practical applications.