Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 272, Issue -, Pages 241-250Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.micromeso.2018.06.048
Keywords
MCM-41; Heterogeneous catalyst; Sulfoxides; Disulfides; Tetrazoles
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In this paper we report synthesis of a heterogeneous catalyst for the first time, by anchoring a zinc complex to mesoporous silica MCM-41. The structure of functionalized MCM-41 was characterized by FT-IR, XRD, SEM, TEM, TGA, ICP, EDA and BET techniques. Functionalized MCM-41 (MCM-41@AMPD@Zn) exhibits excellent catalytic activity in the oxidation of various sulfides into sulfoxides in the presence of hydrogen peroxide (H2O2) as oxidant, oxidative coupling of thiols into disulfides at room temperature and the synthesis of 5-substituted tetrazoles from sodium acid (NaN3). The heterogeneous catalyst showed good recovery and recyclability up to 8 consecutive cycles without significant loss of its catalytic activity.
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