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-MSiO_2-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/SO_3H-MSiO_2-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.
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.
作者
嵇小荷
方海洁
邓永
吴佳敏
孙小军
JI Xiao-he;FANG Hai-jie;DEN Yong;WU Jia-min;SUN Xiao-jun(School of Chemistry and Chemical Engineering, Huaiyin Normal University, Huaian Jiangsu 223300, Chin)
出处
《淮阴师范学院学报（自然科学版）》
CAS
2017年第4期318-322,共5页
Journal of Huaiyin Teachers College;Natural Science Edition
基金
江苏省高校大学生实践创新训练计划项目(201510323026Y)
关键词
短孔道
双功能催化剂
硅烷氧化
水介质
orderly mesoporous
short channel
silane oxidation
water-medium
