引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 983次   下载 325 本文二维码信息
码上扫一扫!
分享到: 微信 更多
CO吸附对乙醛在Co(0001)表面降解和多聚的影响
陈晓1,2, 李方亮1,3, 郭庆1, 戴东旭1, 杨学明1
1.中国科学院大连化学物理研究所, 分子反应动力学国家重点实验室, 能源材料化学协同创新中心, 大连 116023;2.中国科学院大学, 北京 100049;3.上海科技大学, 上海 201210
摘要:
关键词:  
DOI:10.1063/1674-0068/30/cjcp1711214
分类号:
基金项目:his work was supported by the Chinese Academy of Sciences, the National Natural Science Foundation of China (No.21673235, No.21403224), the Youth Innovation Promotion Association, Chinese Academy of Sciences, and the Key Research Program of the Chinese Academy of Sciences.
Modification of Surface Reactivity by CO: Effects on Decomposition and Polymerization of Acetaldehyde on Ru(0001)
Xiao Chen1,2, Fang-liang Li1,3, Qing Guo1, Dong-xu Dai1, Xue-ming Yang1
1.State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Dalian 116023, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.ShanghaiTech University, Shanghai 201210, China
Abstract:
The adsorption and reaction of acetaldehyde on the clean and CO pre-covered Ru(0001) surfaces have been investigated using temperature programmed desorption method. On the clean Ru(0001) surface, the decomposition of acetaldehyde is the main reaction channel, with little polymerization occurring. However, on the CO pre-covered Ru(0001) surface, the decomposition of acetaldehyde is inhibited considerably with increasing CO coverage. Whereas, the polymerization occurs efficiently, especially at high CO coverage (θCO>0.5 ML), which is strongly CO coverage dependent. Combined with previous studies, the well-ordered hexagonal structure of CO layer formed on the Ru(0001) surface at high CO coverage that matches the configuration of paraldehyde is likely to be the origin of this remarkable phenomenon.
Key words:  Acetaldehyde  Polymerization  Temperature programmed desorption  Ru(0001)