| 朱靖,王彦平,李哲.多孔Pd/TiO2-Al2O3催化剂上乙醇完全氧化的研究[J].分子催化,2017,31(1):1-10 |
| 多孔Pd/TiO2-Al2O3催化剂上乙醇完全氧化的研究 |
| The Complete Oxidation of Ethanol Over Porous Pd/TiO2-Al2O3 Catalysts |
| 投稿时间：2016-12-03 修订日期：2017-01-19 |
| DOI： |
| 中文关键词: 多孔Al2O3-TiO2复合材料 Pd催化剂 乙醇氧化 |
| 英文关键词:porous Al2O3-TiO2 composites palladium catalyst ethanol oxidation |
| 基金项目:国家自然科学基金重点项目（Grant No. 21336006）；山西科技攻关项目（20140313002-2）. |
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| 中文摘要: |
| 利用模板剂-浸渍法制备出了不同焙烧温度下的多孔复合材料TiO2-Al2O3 和Pd/Al2O3-TiO2 催化剂来催化氧化乙醇. 样品经过XRD，FT-IR，孔结构分析、TEM、XPS、脉冲吸附、NH3-TPD等进行表征分析. 250 ℃焙烧的Pd/TiO2-Al2O3催化剂具有最高的乙醇转化率和CO2生成率. 高比表面积、均匀分散的金属Pd颗粒和丰富的表面吸附氧是其具有高的催化活性的主要原因. |
| 英文摘要: |
| Porous composite materials Al2O3-TiO2 calcined at different temperatures supported palladium catalysts were synthesized by template-impregnation technique and used for catalytic oxidation of ethanol. The as-prepared samples were cha- racterized by means of low angle and wide angle X-ray diffraction (XRD), N2 adsorption-desorption isotherms, Transmission electron microscopy (TEM), Fourier transformed infrared (FT-IR) and XPS. Pd/TiO2-Al2O3 calcined at 250 ℃ was much more active on the conversion of ethanol and CO2 yield than any other ones. High surface area, well-dispersed metal palladium nanoparticles and rich chemisorbed oxygen are probably responsible for the high catalytic activities. |
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