Scaled‐up, selective and green synthesis of sulfoxides under mild conditions using (Ce^III‐Mo^VI)O_x/aniline hybrid rods as an efficient catalyst

Abstract

A novel hybrid material, (Ce III -Mo VI )O x /aniline, with rod-like morphology is synthesized through a wet chemical method using Mo 3 O 10 (C 6 H 5 NH 3 ) 2 .2H 2 O nanowires as precursor. The synthesized materials are characterized by XRD, XPS, SEM, TEM, FTIR, Raman, UV-Vis, TGA, and elemental analysis. Also, their catalytic activities as a hybrid catalyst are tested in the selective oxidation of sulfides using hydrogen peroxide as a green oxidant. The proposed novel hybrid catalyst shows an excellent performance under green conditions at mild temperature. Furthermore, the scalability of the oxidation reaction is shown by making multi-gram quantities at optimized conditions.

Selective and green oxidation of alcohols and sulfides using mesostructured Cux/Cey mixed oxides

“…The catalyst showed high catalytic efficiency upon at least five runs (upon 90% conversion) in this system. According to reported mechanisms [7,[43][44][45] and our observations here, we offer a plausible mechanism for the oxidation of thioanisole with H 2 O 2 catalyzed by Cu(0.3) (Scheme 3). It was proposed that the original reactive sites in Cu x /Ce y compounds are the terminal Cu=O bonds.…”

“…Different (mixed) metal oxides and active centers immobilized in various porous supports or magnetic nanoparticles are significant for these transformations. [ 5–13 ] Unfortunately, most of these procedures suffer from some impediments: harsh reaction conditions, long reaction times, low yields, insignificant reusability of the catalysts, using toxic and volatile solvents, and costly noble metals as the catalysts. Accordingly, it is essential to expand some green, cheap, and novel methodologies that are more effective.…”