caa a22 4500 606195130 CHVBK 20210128100917.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10934-015-0022-x doi (NATIONALLICENCE)springer-10.1007/s10934-015-0022-x Amine functionalized mesoporous silica nanospheres supported gold nanoparticles: an effective catalyst for styrene epoxidation [Elektronische Daten] [Fang Wang, Cheng Liu, Gui Liu, Junhua Liu] By post-synthesis method, nano-gold catalysts anchored onto the amine functionalized mesoporous silica (nanospheres) were prepared. Symmetrical mesopores and dispersed amine groups in silica nanospheres could guarantee good diffusion capacity and a high dispersion gold nanoparticles (GNPs, 4.4nm). The catalytic tests showed good catalytic activity and epoxidation selectivity, which was superior than the conventional molecular sieves catalysts. To investigate the origin of the gold nanoparticles, the catalyst were characterized using X-ray diffraction, Fourier transformed-infrared spectroscopy, X-ray photoelectron spectroscopy and other instruments. Some reaction parameters, such as solvent, oxidant concentration, catalyst concentration and reaction time, have been investigated and reaction conditions are optimized. Springer Science+Business Media New York, 2015 Amine functionalized mesoporous silica nanospheres nationallicence Nano-gold nationallicence Styrene epoxidation nationallicence Gold-support interactions nationallicence Wang Fang College of Sciences, Nanjing Tech University, 211816, Nanjing, China aut Liu Cheng College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut Liu Gui College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut Liu Junhua College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1423-1430 1380-2224 22:6<1423 2015 22 10934 https://doi.org/10.1007/s10934-015-0022-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-015-0022-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Fang College of Sciences, Nanjing Tech University, 211816, Nanjing, China aut NATIONALLICENCE 700 1- Liu Cheng College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Liu Gui College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 700 1- Liu Junhua College of Chemistry and Materials Science, Nanjing Normal University, 210023, Nanjing, China aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/6(2015-12-01), 1423-1430 1380-2224 22:6<1423 2015 22 10934