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- W4308156979 endingPage "121274" @default.
- W4308156979 startingPage "121274" @default.
- W4308156979 abstract "• A novel oxo–peroxo W(VI) Schiff base complex was prepared and chracterized. • Single crystal X-ray diffraction (SC-XRD) was used to find the complex structure. • The catalytic activity of new homogenerous and heterogeneous nanocatalysts were investigated. • Oxidation of aryl and alkyl sulfides by using H 2 O 2 under green conditions was studied. Efficient removal of sulfide using a modified MIL-101(Cr) nanoreactor by Schiff base complex has been investigated using H 2 O 2 as a green oxidant. In addition, a new oxo-peroxo tungsten(VI) complex has been synthesized successfully by treating WO 3 with a tridentate ONO donor Schiff base ligand in the presence of H 2 O 2 . Different techniques have been used to characterize the complex, while the crystal structure was investigated using an X-ray crystallographic approach. A seven-coordinated tungsten ion with a deformed pentagonal–bipyramidal geometry was explored using single-crystal X-ray diffraction analysis. The [WO(O 2 )(L)(CH 3 OH)] (L: (E)-N'-(5-chloro-2-hydroxybenzylidene) iso nicotinohydrazide) complex has been screened for the sulfoxidation of aryl and alkyl sulfides with H 2 O 2 as a homogeneous catalyst. Furthermore, Chloromethylated MIL-101(Cr) having a mesoporous structure has been used as a support for the immobilization of [WO(O 2 )(L)(CH 3 OH)] complex to produce a heterogeneous and recyclable catalyst. This heterogeneous catalyst is novel in its efficiency, as illustrated by its improved activity with reference to the homogeneous catalyst under the same reaction conditions. The heterogeneous structure displayed excellent reusability several times without losing activity due to covalent grafting between –CH 2 Cl and W(VI) Schiff base, which introduces high stable nanostructure without leaching the complex during the reaction." @default.
- W4308156979 created "2022-11-08" @default.
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- W4308156979 date "2023-01-01" @default.
- W4308156979 modified "2023-10-18" @default.
- W4308156979 title "Green and efficient removal of sulfides using oxo-peroxo tungsten(VI)-MIL-101(Cr) nanoreactor as heterogeneous recyclable catalyst" @default.
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- W4308156979 doi "https://doi.org/10.1016/j.ica.2022.121274" @default.
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