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CO吸附对乙醛在Co(0001)表面降解和多聚的影响
陈晓,李方亮,郭庆*,戴东旭,杨学明*
作者单位E-mail
陈晓 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;中国科学院大学, 北京 100049  
李方亮 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;上海科技大学, 上海 201210  
郭庆* 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 guoqing@dicp.ac.cn 
戴东旭 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  
杨学明* 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 xmyang@dicp.ac.cn 
摘要:
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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 Chen,Fang-liang Li,Qing Guo*,Dong-xu Dai,Xue-ming Yang*
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)