ICCAS OpenIR
Effects of temperature on the heterogeneous oxidation of sulfur dioxide by ozone on calcium carbonate
Wu, L. Y.; Tong, S. R.; Wang, W. G.; Ge, M. F.
2011
Source PublicationATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
Volume11Issue:13Pages:6593-6605
AbstractThe heterogeneous oxidation of sulfur dioxide by ozone on CaCO3 was studied as a function of temperature (230 to 298 K) at ambient pressure. Oxidation reactions were followed in real time using diffuse reflectance infrared Fourier transform spectrometry (DRIFTS) to obtain kinetic and mechanistic data. From the analysis of the spectral features, the formation of sulfate was identified on the surface in the presence of O-3 and SO2 at different temperatures from 230 to 298 K. The results showed that the heterogeneous oxidation and the rate of sulfate formation were sensitive to temperature. An interesting stage-transition region was observed at temperatures ranging from 230 to 257 K, but it became ambiguous gradually above 257 K. The reactive uptake coefficients at different temperatures from 230 to 298K were acquired for the first time, which can be used directly in atmospheric chemistry modeling studies to predict the formation of secondary sulfate aerosol in the troposphere. Furthermore, the rate of sulfate formation had a turning point at about 250 K. The sulfate concentration at 250 K was about twice as large as that at 298 K. The rate of sulfate formation increased with decreasing temperature at temperatures above 250 K, while there is a contrary temperature effect at temperatures below 250 K. The activation energy for heterogeneous oxidation at temperatures from 245 K to 230 K was determined to be 14.63 +/- 0.20 kJ mol(-1). A mechanism for the temperature dependence was proposed and the atmospheric implications were discussed.
DOI10.5194/acp-11-6593-2011
Indexed BySCI
Language英语
WOS IDWOS:000292728400028
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Cited Times:44[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/71860
Collection中国科学院化学研究所
Corresponding AuthorGe, M. F.
AffiliationChinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wu, L. Y.,Tong, S. R.,Wang, W. G.,et al. Effects of temperature on the heterogeneous oxidation of sulfur dioxide by ozone on calcium carbonate[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2011,11(13):6593-6605.
APA Wu, L. Y.,Tong, S. R.,Wang, W. G.,&Ge, M. F..(2011).Effects of temperature on the heterogeneous oxidation of sulfur dioxide by ozone on calcium carbonate.ATMOSPHERIC CHEMISTRY AND PHYSICS,11(13),6593-6605.
MLA Wu, L. Y.,et al."Effects of temperature on the heterogeneous oxidation of sulfur dioxide by ozone on calcium carbonate".ATMOSPHERIC CHEMISTRY AND PHYSICS 11.13(2011):6593-6605.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wu, L. Y.]'s Articles
[Tong, S. R.]'s Articles
[Wang, W. G.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wu, L. Y.]'s Articles
[Tong, S. R.]'s Articles
[Wang, W. G.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wu, L. Y.]'s Articles
[Tong, S. R.]'s Articles
[Wang, W. G.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.