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Hamid Khanmohammadi

Hamid Khanmohammadi

Academic rank: Professor
ORCID: https://orcid.org/0000-0001-5600-4738
Education: PhD.
ScopusId: 22734138900
Faculty: Science
Address: Arak University
Phone:

Research

Title
Immobilized 4-methyl-2,6-diformyl phenol complexes on a zeolite: Characterization and catalytic applications in esterification, DielseAlder and aldol condensation
Type
JournalPaper
Keywords
Keywords: Zeolite Functionalize Schiff base Organic transformation
Year
2016
Journal Microporous and Mesoporous Materials
DOI
Researchers Mojgan Zendehdel ، Fahimeh Zamani ، Hamid Khanmohammadi

Abstract

Development of simple and reliable protocols for the immobilization of catalytically active species is an important aspect of the field of hybrid nanomaterials. We have attempted (succeeded) to entrap aldehyde species on the surface of micron-sized zeolite particles functionalized with amine groups. Thus, we have demonstrated that 4-methyl-2,6-diformyl phenol bound at high surface coverage on 3- aminopropyltrimethoxysilane (3-APTS)-functionalized NaY zeolites generates excellent heterogeneous catalysts for organic transformation reactions. The assembly of Schiff base compound on the zeolite surface occurs via an interaction of 4-methyl-2,6-diformyl phenol with the amine groups present in 3- APTS leading to a new class of catalyst. The synthesized catalysts were characterized by DRS, FTIR, TGA, XRD, BET, PL and ICP-OES. The Ni and Cu complexes grafted on amino functionalized zeolite are efficient catalysts for esterification, DielseAlder and aldol condensation at ambient conditions. In all these reactions, the modified zeolite showed higher yield and selectivity.