气候变化领域集成服务门户(CCPortal): Enhanced reactivity of highly vibrationally excited molecules on metal surfaces

CCPortal

DOI	10.1126/science.284.5420.1647
	Enhanced reactivity of highly vibrationally excited molecules on metal surfaces
	Hou H.; Huang Y.; Gulding S.J.; Rettner C.T.; Auerbach D.J.; Wodtke A.M.
发表日期	1999
ISSN	0036-8075
起始页码	1647
结束页码	1650
卷号	284 期号:5420
英文摘要	The chemical dynamics of highly vibrationally excited molecules have been studied by measuring the quantum state-resolved scattering probabilities of nitric oxide (NO) molecules on clean and oxygen-covered copper (111) surfaces, where the incident NO was prepared in single quantum states with vibrational energies of as much as 300 kilojoules per mole. The dependence of vibrationally elastic and inelastic scattering on oxygen coverage strongly suggests that highly excited NO (v = 13 and 15) reacts on clean copper (111) with a probability of 0.87 ± 0.05, more than three orders of magnitude greater than the reaction probability of ground-state NO. Vibrational promotion of surface chemistry on metals (up to near-unit reaction probability) is possible despite the expected efficient relaxation of vibrational energy at metal surfaces.The chemical dynamics of highly vibrationally excited molecules have been studied by measuring the quantum state-resolved scattering probabilities of nitric oxide (NO) molecules on clean and oxygen-covered copper (111) surfaces, where the incident NO was prepared in single quantum states with vibrational energies of as much as 300 kilojoules per mole. The dependence of vibrationally elastic and inelastic scattering on oxygen coverage strongly suggests that highly excited NO (v = 13 and 15) reacts on clean copper (111) with a probability of 0.87±0.05, more than three orders of magnitude greater than the reaction probability of ground-state NO. Vibrational promotion of surface chemistry on metals (up to near-unit reaction probability) is possible despite the expected efficient relaxation of vibrational energy at metal surfaces.
英文关键词	Copper; Crystal orientation; Nitrogen compounds; Probability; Surface chemistry; Quantum state-resolved scattering probability; Molecular vibrations; copper; metal; nitric oxide; oxygen; adsorption; article; energy; excitation; fluorescence; gas; molecular interaction; molecule; oxidation; photochemistry; priority journal; surface property; temperature; vibration
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244061
作者单位	IBM Research Division, Almaden Research Center, San Jose, CA 95120, United States; Department of Chemistry, University of California, Santa Barbara, CA 93106, United States
推荐引用方式 GB/T 7714	Hou H.,Huang Y.,Gulding S.J.,et al. Enhanced reactivity of highly vibrationally excited molecules on metal surfaces[J],1999,284(5420).
APA	Hou H.,Huang Y.,Gulding S.J.,Rettner C.T.,Auerbach D.J.,&Wodtke A.M..(1999).Enhanced reactivity of highly vibrationally excited molecules on metal surfaces.Science,284(5420).
MLA	Hou H.,et al."Enhanced reactivity of highly vibrationally excited molecules on metal surfaces".Science 284.5420(1999).