Modification of Surface Reactivity by CO： Effects on Decomposition and Polymerization of Acetaldehyde on Ru（0001）  

CO吸附对乙醛在CO（0001）表面降解和多聚的影响

作　　者：陈晓 李方亮 郭庆[1] 戴东旭[1] 杨学明[1] 

机构地区：[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

出　　处：《Chinese Journal of Chemical Physics》2017年第6期643-648,I0001,共7页化学物理学报（英文）

摘　　要：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 de- composition 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 hexagohal 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.

关 键 词：ACETALDEHYDE POLYMERIZATION Temperature programmed desorption Ru（0001） 

分 类 号：O[理学]