@article { ISI:000263158700050, title = {Acylation of nitrobenzene and substituted nitrobenzenes by benzoyl chloride using GaClx- and GaAlClx-grafted meporous Si-MCM-41 catalysts}, journal = {Microporous and Mesoporous Materials}, volume = {119}, number = {1-3}, year = {2009}, month = {MAR}, pages = {360-362}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

A acylation of nitrobenzene and substituted nitrobenzene by benzoyl chloride can be accomplished with good yield in a short reaction period (\<= 3 h), even in the presence of moisture, using GaClx- and GaAlClx-grafted mesoporous silica (Si-MCM-41) catalyst. The catalyst is reusable/environmentally friendly. The presence of moisture in the catalyst has beneficial effect on the acylation reaction. (C) 2008 Elsevier Inc. All rights reserved.

}, keywords = {Acylation, Benzoyl chloride, GaAlClx-grafted Si-MCM-41, GaClx-grafted Si-MCM-41, nitrobenzene}, issn = {1387-1811}, doi = {10.1016/j.micromeso.2008.11.001}, author = {Choudhary, Vasant R. and Jha, Rani} } @article { ISI:000287058200011, title = {Dopant induced effect on electrocatalytic reduction of nitrobenzene using conducting polypyrrole thin film electrodes}, journal = {Journal of Applied Polymer Science}, volume = {120}, number = {2}, year = {2011}, month = {APR}, pages = {719-724}, publisher = {WILEY-BLACKWELL}, address = {COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA}, abstract = {

Conducting polypyrrole electrodes were prepared by electrochemical polymerization of pyrrole on vacuum-metallized glass substrates. These electrodes were modified by doping with a range of metal halides as dopant ions having different electronegativity. Electrochemical reduction of nitrobenzene using these electrodes was studied by means of cyclic voltammetry technique in acetonitrile medium containing aqueous HClO(4) (0.1M) as supporting electrolyte. It was found that the electronegativity of the dopant ion played a very important role in the electrocatalytic activity. Polypyrrole doped with nickel chloride gave the highest anodic current at the reduction potential of nitrobenzene. The results were explained on the basis of charge transfer efficiency at the electrode-electrolyte interface, which was associated with the acceptor state created by the dopant in the semi-conducting polymer. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 120: 719-724, 2011

}, keywords = {charge transfer, conducting polymer, Doping, electrocatalysis, nitrobenzene, polypyrrole, reduction}, issn = {0021-8995}, doi = {10.1002/app.31417}, author = {Adhikari, Arindam and Radhakrishnan, S.} } @article {49560, title = {Liquid phase nitration of benzene to nitrobenzene using a mesoporous MoO3/Nb2O5 nanocatalyst}, journal = {Catalysis Letters}, volume = {155}, year = {2025}, month = {APR}, pages = {141}, type = {Article}, abstract = {

This work reports the synthesis of a mesoporous MoO3/Nb2O5 catalyst by a facile co-precipitation method for the liquid phase nitration of benzene to nitrobenzene, which is a vital industrial reaction. Pristine Nb2O5 and MoO3/Nb2O5 nanocatalysts were characterized using various techniques, including powder XRD, N-2 adsorption-desorption, Raman, SEM/TEM, pyridine FT-IR, and XPS. The MoO3/Nb2O5 catalyst (10 wt\% MoO3 with respect to Nb2O5) showed uniform dispersion of Mo and Nb species, higher amount of oxygen vacancies, and more Br \& oslash;nsted acid sites, resulting in a 90\% yield of nitrobenzene. In contrast, only 35 and 58\% yields were obtained in the case of commercial Nb2O5 and nanosized Nb2O5, respectively. The liquid phase nitration of benzene was carried out using commercial 65\% HNO3 as a nitrating agent without sulfuric acid. The mesoporous MoO3/Nb2O5 catalyst is structurally stable, as confirmed by the characterization of the spent catalyst. However, a gradual decrease in the yield of nitrobenzene was observed, which could be due to the leaching of MoO3 species from the catalyst surface.

}, keywords = {Benzene nitration, Bronsted acid sites, Mesoporous MoO3/Nb2O5 Catalyst, nitrobenzene, Uniform metal dispersion}, issn = {1011-372X}, doi = {10.1007/s10562-025-04981-2}, author = {Kalbande, Pavan Narayan and Swapna, Bhattu and Sudarsanam, Putla and Umbarkar, Shubhangi B.} }