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Graphene Oxide Supported Molybdenum Cluster: First Heterogenized Homogeneous Catalyst for the Synthesis of Dimethylcarbonate from CO 2 and Methanol
Author(s) -
Kumar Subodh,
Khatri Om P.,
Cordier Stéphane,
Boukherroub Rabah,
Jain Suman L.
Publication year - 2015
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201404949
Subject(s) - catalysis , molybdenum , graphene , oxide , methanol , x ray photoelectron spectroscopy , octahedron , inorganic chemistry , chemistry , cluster (spacecraft) , materials science , chemical engineering , nanotechnology , crystallography , crystal structure , organic chemistry , programming language , computer science , engineering
The octahedral molybdenum cluster‐based compound, Cs 2 Mo 6 Br i 8 Br a 6 was immobilized on graphene oxide (GO) by using a facile approach. High resolution transmission electron microscopy results revealed that molybdenum clusters were uniformly distributed on the GO nanosheets. Cs 2 Mo 6 Br i 8 Br a 6 was attached to the GO support via chemical interaction between apical ligands of Mo 6 Br i 8 Br a 6 cluster units and oxygen functionalities of GO, as revealed by XPS studies. The developed material was used for the synthesis of dimethyl carbonate by reduction of carbon dioxide. The synthesized catalyst, that is, GO–Cs 2 Mo 6 Br i 8 Br a x , exhibited higher catalytic efficiency than its homogeneous analogue without using dehydrating agent. The catalyst was found to be efficiently recyclable without significant loss of catalytic activity.