Catalysis Database

Catalytic hydrogenation of aromatic nitro compounds using polymer–supported palladium-2-methylimidazole complex

V, Udaya kumar and V, Gayathri and S, Alexander and Shiva, Kumaraiah (2010) Catalytic hydrogenation of aromatic nitro compounds using polymer–supported palladium-2-methylimidazole complex. J Molecular catalsysis pre submission version . (Unpublished)

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Abstract

Polymer–supported palladium-2-methylimidazole complex catalyst has been synthesized using chloromethylated polystyrene beads cross-linked with 6.5% divinylbenzene as support and was characterized by elemental analysis, IR spectroscopy, TG analysis, XPS, SEM, bulk density and surface area studies by BET method. Swelling studies in different solvents was also investigated. The synthesized catalyst was used for hydrogenation of nitrobenzene and few of its derivatives under ambient conditions. Results reveal that the electronic as well as steric factors of the substitutent control the rate of hydrogenation of nitro group in the studied substrates. The reaction kinetics was studied by varying the catalyst, substrate concentration and temperature. A plausible hydrogenation mechanism has been proposed. The catalyst was recycled six times without any loss in activity and metal leaching

Item Type:Article
Uncontrolled Keywords:Transition metal complexes, Polymer-supported palladium-2-methylimidazole complex catalyst, hydrogenation, aromatic nitro compounds
Subjects:Q Science > QD Chemistry
ID Code:1771
Deposited By: Prof Balasubramanian Viswanathan
Deposited On:04 Aug 2010 05:03
Last Modified:14 Apr 2019 05:35

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