1 wt% Pd/γ-Al₂O₃ 催化剂中纳米级钯颗粒生长对挥发性有机化合物完全氧化的影响。

Effect of the growth of nano-sized Pd particle in 1 wt% Pd/gamma-Al2O3 catalyst on the complete oxidation of volatile organic compounds.

作者信息

Kim Sang Chai, Shim Wang Geun, Ryu Jae Yong

机构信息

Department of Environmental Education, Mokpo National University, Muan 534-729, Korea.

出版信息

J Nanosci Nanotechnol. 2010 May;10(5):3521-4. doi: 10.1166/jnn.2010.2286.

DOI:10.1166/jnn.2010.2286

PMID:20358991

Abstract

The effect of growth of nano-sized Pd particle on the catalytic activity of 1 wt% Pd/gamma-Al2O3 catalyst were examined to obtain the complete oxidation of volatile organic compounds (VOCs: toluene, xylene). Fresh and used forms of 1 wt% Pd/gamma-Al2O3 catalysts were characterized by using X-ray photoelectron microscopy (XPS), Transmission electron microscopy (TEM), and Brunauer Emmett Teller (BET) surface area analyses. Catalytic activity tests revealed that the conversion of VOCs increased with the lapse of reaction time at certain reaction temperature. The results of the instrumental analyses and the catalytic performance indicated that the conversion of VOCs was highly dependent on the growth of nano-sized Pd particle in the catalyst.

摘要

研究了纳米尺寸钯颗粒的生长对1 wt% Pd/γ-Al2O3催化剂催化活性的影响，以实现挥发性有机化合物（VOCs：甲苯、二甲苯）的完全氧化。采用X射线光电子显微镜（XPS）、透射电子显微镜（TEM）和布鲁诺尔-埃米特-泰勒（BET）表面积分析对新鲜和使用过的1 wt% Pd/γ-Al2O3催化剂进行了表征。催化活性测试表明，在一定反应温度下，VOCs的转化率随反应时间的延长而增加。仪器分析结果和催化性能表明，VOCs的转化率高度依赖于催化剂中纳米尺寸钯颗粒的生长。