标题：One-step synthesis of nano-size iron oxide/three-dimensional wormlike hierarchical mesoporous SiO2 catalysts and its catalytic performance on phenol hydroxylation
作者：Wu Jiafeng; Zhao Yumei; Liang Peng
作者机构：[Wu Jiafeng; Zhao Yumei] Taiyuan Univ Sci & Technol, Taiyuan, Peoples R China.; [Wu Jiafeng; Liang Peng] Shandong Univ Sci & Technol, Qingdao, Peopl 更多
会议名称：International Conference on Nanotechnology and Precision Engineering (ICNPE 2012)
会议日期：DEC 26-27, 2012
来源：NANOTECHNOLOGY AND PRECISION ENGINEERING, PTS 1 AND 2
关键词：Hierarchical mesoporous; Hydroxylation; Nano-size iron oxide; Phenol
摘要：A series of nano-sized iron oxide supported on 3D wormlike hierarchical mesoporous SiO2 catalysts were synthesized by one-step hydrothermal synthesis. The samples were characterized by XRD, N-2 sorption, FT-IR, UV-Vis, TEM and ICP-AES. The catalysts were probed for the oxidation of phenol employing hydrogen peroxide. The results indicate that the materials exhibit high surface area and 3D wormlike hierarchical pore, iron ions exist as isolated framework species when the weight percentage content of iron is below 0.24 and nano-size iron oxide is dispersed in the surface (iron content above 0.24 wt%). Catalytic performance indicates that nano-size iron oxide supported on SiO2 is useful to enhance both the catalytic activity and the selectivity of target products compared with isolated iron species.