化工进展2016，Vol.35Issue(z2)：168-173,6.DOI:10.16085/j.issn.1000-6613.2016.s2.028
Ag/MIL-101催化剂还原对硝基苯酚反应动力学
Kinetic analysis of catalytic reduction of 4-nitrophenol by Ag/MIL-101
秦凤祥 1李凭力 2黄益平 1徐义明 3陆晓咏 3刘春江3
作者信息
- 1. 天津大学化工学院，天津 300072
- 2. 中建安装工程有限公司，江苏 南京 210023
- 3. 中建安装工程有限公司，江苏 南京 210023
- 折叠
摘要
Abstract
Highly dispersed and ultrafine Ag/MIL-1 0 1 was prepared by double solvent method (DSM).The size of the nanoparticles was about 1.9 nm ± 0.6 nm and the total surface area of nanoparticles could be determined precisely.The catalytic activity was investigated by photo-metrically monitoring the reduction of 4-nitrophenol (4-NP) by an excess of NaBH4 in the presence of the nanoparticles.The kinetic data could be modelled to the Langmuir-Hinshelwood equation.The apparent reaction rate,kapp was found to be related to the total surface of the nanoparticles, to the kinetic constant, k, related to the rate-determining step, and to the adsorption constants K 4-NP and K BH4 for 4-NP and borohydride, respectively.The activation energy was obtained by fitting kapp obtained at different temperatures.The study also showed that the induction time,t0 , is directly related to the reaction rate constant,k, of the controlling step.关键词
催化剂载体/纳米粒子/反应动力学/催化机理Key words
catalyst support/nanoparticles/reaction kinetics/catalytic mechanism分类
化学化工引用本文复制引用
秦凤祥,李凭力,黄益平,徐义明,陆晓咏,刘春江..Ag/MIL-101催化剂还原对硝基苯酚反应动力学[J].化工进展,2016,35(z2):168-173,6.
