期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 198, 期 -, 页码 74-82出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2016.05.051
关键词
Heterogeneous catalysts; Mesoporous; Cobalt oxide; 4-nitrophenol; Reduction; Crystallite size
资金
- National Research Foundation (NRF, South Africa) [85386]
Mesoporous cobalt oxides were synthesized using an inverse surfactant micelle method. The prepared materials are mono-dispersed nanoparticle aggregates with connected, well defined intra-particle voids. Powder X-ray diffraction, N-2 sorption, scanning electron microscopy and transmission electron microscopy revealed that both pore and nanoparticle sizes are enlarged with thermal treatment temperatures. Nitrogen sorption experiments revealed that the pore diameters increased from 12.1 to 31.9 nm with the final heat treatment increase from 150 to 550 degrees C. The reduction of 4-nitrophenol has been chosen as a well-controlled model reaction allowing us to determine the catalytic activity as a function of crystallite size and pore diameter. A comparison of the various cobalt oxide catalysts is made in terms of Langmuir-Hinshelwood kinetics. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据