Influence of Temperature on the Heterogeneous Reaction of Formic Acid on   alpha-Al2O3

doi:10.1021/jp3073393

CORC > 北京大学 > 化学与分子工程学院

	Influence of Temperature on the Heterogeneous Reaction of Formic Acid on alpha-Al2O3
	Wu, Ling-Yan ; Tong, Sheng-Rui ; Hou, Si-Qi ; Ge, Mao-Fa
刊名	journal of physical chemistry a
	2012
关键词	CALCIUM-CARBONATE ORGANIC-ACIDS ACETIC-ACIDS INFRARED-SPECTROSCOPY ICE SURFACES KNUDSEN CELL NITRIC-ACID ADSORPTION DECOMPOSITION CHEMISTRY
DOI	10.1021/jp3073393
英文摘要	Despite increased awareness of the role played by heterogeneous reactions of formic acid on mineral aerosol, the experimental determination of how these atmospheric reaction rates vary with temperature remain a crucially important part of atmosphere science. Here we report the first measurement of heterogeneous uptake of formic acid on alpha-Al2O3 as a function of temperature (T = 240-298 K) at ambient pressure using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). From the analysis of the spectral features, crystalline HCOOH was identified at low temperature besides common product (formate ions) on the surface. It was also interesting to find that crystalline HCOOH can continue to react with alpha-Al2O3. The reaction mechanisms at both room and low temperature were discussed. Furthermore, the reactive uptake coefficients were acquired and found to increase with decreasing temperature. Finally, the atmospheric lifetime of formic acid because of heterogeneous loss on mineral aerosol was estimated at temperatures related to the upper troposphere.; Chemistry, Physical; Physics, Atomic, Molecular & Chemical; SCI(E); 3; ARTICLE; 42; 10390-10396; 116
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/229759]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Wu, Ling-Yan,Tong, Sheng-Rui,Hou, Si-Qi,et al. Influence of Temperature on the Heterogeneous Reaction of Formic Acid on alpha-Al2O3[J]. journal of physical chemistry a,2012.
APA	Wu, Ling-Yan,Tong, Sheng-Rui,Hou, Si-Qi,&Ge, Mao-Fa.(2012).Influence of Temperature on the Heterogeneous Reaction of Formic Acid on alpha-Al2O3.journal of physical chemistry a.
MLA	Wu, Ling-Yan,et al."Influence of Temperature on the Heterogeneous Reaction of Formic Acid on alpha-Al2O3".journal of physical chemistry a (2012).