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使用原子层表皮氧化技术制备Cu/SiO2催化剂的前体Cu(thd) 2的特性

Ching S Chen¹, Jarrn H Lin, Jainn H You

¹Center for General Education, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan Tao-Yuan, Taiwan 333, Republic of China. cschen@mail.cgu.edu.tw

Journal of the American Chemical Society

|December 15, 2006

概括

使用原子层表 (ALE) 的新催化剂显示了逆水-气-转移反应的高活性. 这种ALE-Cu/SiO2催化剂通过纳米铜颗粒有效地将二氧化碳转化为一氧化碳.

科学领域:

催化剂是一种催化剂.
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

传统的基于铜的催化剂可能会在高温下遭受颗粒烧结.
开发具有增强热稳定性和活性的催化剂对于工业应用至关重要.

研究的目的:

开发一种新的铜/二氧化 (Cu/SiO2) 催化剂,使用原子层表皮氧化 (ALE).
研究ALE-Cu/SiO2催化剂的催化性能和热稳定性,用于逆水-气-转移反应.

主要方法:

制造Cu/SiO2催化剂通过原子层表皮氧 (ALE).
在逆水气转移反应中,对二氧化碳转化为二氧化碳的催化活性进行评估.
评估热稳定性和耐铜颗粒在773 K.烧结的耐受性.

主要成果:

ALE-Cu/SiO2催化剂显示出高分散和纳米级的铜颗粒.
ALE-Cu/SiO2表现出强烈的CO结合和高的催化活性,用于CO2转化.
催化剂显示出令人满意的热稳定性,在773 K.抵抗烧结.
催化活性顺序:2.4% ALE-Cu/SiO2 = 2% Pt/SiO2 > 2% Pd/SiO2 > 10.3% IM-Cu/SiO2.2. 催化活性顺序: 2.4% ALE-Cu/SiO2 = 2% Pt/SiO2 > 2% Pd/SiO2 > 10.3% IM-Cu/SiO2.2. 催化活性顺序: 2.4% ALE-Cu/SiO2 = 2% Pt/SiO2 > 2% Pd/SiO2 > 10.3% IM-Cu/SiO2.2.

结论:

ALE是开发高度分散,稳定的Cu/SiO2催化剂的有效方法.
在ALE-Cu/SiO2中的纳米铜颗粒在RWGS反应中增强了CO结合和催化性能.
ALE-Cu/SiO2为二氧化碳利用提供了传统催化剂的有希望的替代品.

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