Fine CuO anisotropic nanoparticles supported on mesoporous SBA-15 for selective hydrogenation of nitroaromatics
作者： Shweta Sareen , Vishal Mutreja , Satnam Singh , Bonamali Pal
DOI: 10.1016/J.JCIS.2015.09.002
关键词:
摘要: SBA-15 modified with APTMS (3-aminopropyl trimethoxysilane) having pore diameter (∼8 nm) has been synthesized and impregnated 1-10 wt.% Cu using Cu(NO3)2 as a metal source followed by calcination at 350 °C. As-prepared CuO/ap-SBA-15 powder showed changes in the color from white for bare to light green due formation of anisotropic CuO nanoparticles that exhibited characteristic plasmon absorption band 359 747 nm. TEM studies change morphology NPs function increased loading. Moreover, well dispersed nanospheres (∼5-6 nanorods (aspect ratio ∼11-20 monoclinic crystal phase were observed within mesoporous channels SBA-15. Elemental mapping confirmed uniform distribution on surface An increase area was also 694 m(2) g(-1) 762 10 loading probably deposition excess outer siliceous surface. The catalytic activity catalyst displayed highest reduction m-chloronitrobenzene m-nitrotoluene 83% 100% selectivity m-chloroaniline m-aminotoluene respectively.
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