02039nas a2200253   4500008004100000022001400041245010000055210006900155260000800224300001400232490000700246520115700253653002601410653002201436653002801458653002401486653004001510100002201550700002101572700001601593700002601609700002301635856012701658       2021                        eng d  a1867-388000aSynergistic nanostructured MnOx/TiO2 catalyst for highly selective synthesis of aromatic imines0 aSynergistic nanostructured MnOxTiO2 catalyst for highly selectiv  cAPR  a1990-19970 v133 a<p>This work reports the development of a synergistic nanostructured MnOx/TiO2 catalyst, with highly dispersed MnOx nanoparticles (4.5 +/- 1 nm) on shape-controlled TiO2 nanotubes (8-11 nm width and 120-280 nm length), for selective synthesis of valuable aromatic imines at industrially important conditions. Pristine TiO2 nanotubes exhibited 97 % imine selectivity at a 38.3 % benzylamine conversion, whereas very low imine selectivity was obtained over commercial TiO2 materials, indicating the catalytic significance of shape-controlled TiO2 nanotubes. The MnOx nanoparticle/TiO2 nanotube (10 wt% Mn) catalyst calcined at 400 degrees C showed the best activity with 95.6 % benzylamine conversion and 99.9 % imine selectivity. This catalyst exhibited good recyclability for four times and is effective for converting numerous benzylamines into higher yields of imines. The high catalytic performance of MnOx/TiO2 nanotubes was attributed to higher number of redox sites (Mn3+), high dispersion of Mn species, and shape-controlled structure of TiO2, indicating that this catalyst could be a promising candidate for selective oxidation reactions.</p>
10aAcid-redox properties10aaerobic oxidation10aNanostructured catalyst10aSelective catalysis10aSynergistic metal-oxide interaction1 aSudarsanam, Putla1 aKockritz, Angela1 aAtia, Hanan1 aAmin, Mohamad, Hassan1 aBruckner, Angelika  uhttps://library.ncl.res.in/content/synergistic-nanostructured-mnoxtio2-catalyst-highly-selective-synthesis-aromatic-imines