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Vahid Mahdavi

Vahid Mahdavi

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0001-5823-5628
Education: PhD.
ScopusId: 7004027950
Faculty: Science
Address: Arak University
Phone:

Research

Title
Novel synthesis of manganese and vanadium mixed oxide (V2O5/OMS-2) as an efficient and selective catalyst for the oxidation of alcohols in liquid phase
Type
JournalPaper
Keywords
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Year
2014
Journal Materials Research Bulletin
DOI
Researchers Vahid Mahdavi ، Shima Soleimani

Abstract

This work reports the synthesis and characterization of mixed oxide vanadium–manganese V2O5/K-OMS-2 at various V/Mn molar ratios and prepared by the impregnation method. Characterization of these new composite materials was made by elemental analysis, BET, XRD, FT-IR, SEM and TEM techniques. Results of these analyses showed that vanadium impregnated samples contained mixed phases of cryptomelane and crystalline V2O5 species. Oxidation of various alcohols was studied in the liquid phase over the V2O5/K-OMS-2 catalyst using tert-butyl hydroperoxide (TBHP) and H2O2 as the oxidant. Activity of the V2O5/K-OMS-2 samples was increased considerably with respect to K-OMS-2 catalyst due to the interaction of manganese oxide and V2O5. The kinetic of benzyl alcohol oxidation using excess TBHP over V2O5/K-OMS-2 catalyst was investigated at different temperatures and a pseudo-first order reaction was determined with respect to benzyl alcohol. The effects of reaction time, oxidant/alcohol molar ratio, reaction temperature, solvents, catalyst recycling potential and leaching were investigated.