01968nas a2200241 4500008004100000022001400041245009700055210006900152260000800221300000800229490000800237520113300245653002201378653002401400653003501424653001701459653002901476100002901505700001901534700002201553700002801575856012301603 2025 eng d a1011-372X00aLiquid phase nitration of benzene to nitrobenzene using a mesoporous MoO3/Nb2O5 nanocatalyst0 aLiquid phase nitration of benzene to nitrobenzene using a mesopo cAPR a1410 v1553 a

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.

10aBenzene nitration10aBronsted acid sites10aMesoporous MoO3/Nb2O5 Catalyst10anitrobenzene10aUniform metal dispersion1 aKalbande, Pavan, Narayan1 aSwapna, Bhattu1 aSudarsanam, Putla1 aUmbarkar, Shubhangi, B. uhttps://library.ncl.res.in/content/liquid-phase-nitration-benzene-nitrobenzene-using-mesoporous-moo3nb2o5-nanocatalyst