【摘要】 在模板剂P123的作用下,通过共聚法将巯基硅烷与2-二（三甲氧基硅）乙烷共聚得到巯基功能化的短孔道有序介孔材料SH-MSiO₂-S.利用载体中的巯基与HAuCl4原位发生氧化还原反应获得短孔道有序介孔双功能催化剂Au@SH/SO₃H-MSiO₂-S.该催化剂中的金纳米粒子粒径较小,且高度分散在介孔材料上.由于磺酸基和金纳米粒子的协同作用,其在水介质的三乙基硅烷氧化反应中表现出较好的催化活性.更多还原

【Abstract】 Thiol functionalize mesoporous material（ SH-MSiO₂-S） with short-channel and well-ordered periodic mesoporous channels were prepared by template P123 self-assembly directed co-condensation of（ 3-mercaptopropyl） triethoxysilane and tetraethoxysilane（ TEOS） under acidic conditions. A novel Au nanoparticleacid bifunctional catalyst was obtained by in situ oxidoreduction of Au3 +with thiol on the SH-MSiO₂-S support. the formed Au nanoparticles were coordinated by unreacted thiol ligands. The as-made catalyst Au@ SH/SO₃H-MSiO₂-S displayed highly dispersed Au naoparticles,which is very critical for essential catalytic activities. It displayed highly catalytic performance in water-medium triethyl silane oxidation reaction due to synergistic effect between both the Au nanoparticles and the SO₃H acidic groups.更多还原