Synthesis of Au-CeO2/SiO2 catalyst via adsorbed-layer reactor technique combined with alcohol-thermal treatment |
| |
| Authors: | Xin Jiang Hui Deng |
| |
| Institution: | a Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
b Zhejiang Provincial Engineering Research Center of Industrial Boiler & Furnace Flue Gas Pollution Control, Hangzhou 311202, China |
| |
| Abstract: | Au-CeO2/SiO2 was prepared via adsorbed-layer reactor technique combined with alcohol-thermal treatment. The catalytic performance in complete oxidation of benzene was investigated. TEM, Raman characterization showed that Au particles grew up obviously during alcohol-thermal process, while CeO2 particles maintained 4 nm in diameter. The content of oxygen vacancies and adsorbed oxygen species on catalysts surface increased apparently. Alcohol-thermally treated Au-CeO2/SiO2 and CeO2/SiO2 showed similar change in catalytic performance, and were much superior to calcined CeO2/SiO2. Of alcohol-thermally treated and calcined CeO2/SiO2, initial temperatures of the reaction were 80 °C and 150 °C, respectively. The benzene conversions reached 85% and 40% at 300 °C. |
| |
| Keywords: | Benzene oxidation Conversion platform Adsorbed oxygen species Low-temperature activity |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
