Heterogeneous reactivity of carbonyl sulfide on alpha-Al2O3 and gamma-Al2O3
文献类型：期刊论文
| 作者 | Liu, Yongchun; He, Hong; Mu, Yujing |
| 刊名 | ATMOSPHERIC ENVIRONMENT
 |
| 出版日期 | 2008-02 |
| 卷号 | 42期号:5页码:960-969 |
| 关键词 | heterogeneous reactivity carbonyl sulfide Al2O3 global flux knudsen cell |
| 英文摘要 | The heterogeneous reactions of trace gases in the atmosphere on atmospheric particles could greatly affect the nitrogen, sulfur, ozone, and photochemical oxidant cycles. The uptake coefficient is an important kinetic parameter for atmospheric models to assess the role of heterogeneous reaction in the global cycles of trace gases. In this study, the heterogeneous uptake coefficients of carbonyl sulfide (OCS) on AL(2)O(3) have been measured using a Knudsen cell reactor at 300 K. Hydrogen sulfide (H,S) and carbon dioxide (CO,) were found to be the gaseous products. The reaction mechanism of OCS on Al2O3 was confirmed based on previous work and this study. The true initial uptake coefficient and steady-state uptake coefficient of OCS on alpha-Al2O3 were (3.8 +/- 0.8) x 10(-7) and (6.5 +/- 2.49) x 10(-8), and the corresponding uptake coefficients on gamma-Al2O3 were (7.0 +/- 0.7) x 10(-8) and (1.8 +/- 0.4) x 10(-8), respectively. The annual flux of OCS due to heterogeneous reaction on alpha-Al2O3 was calculated to be 0.11-0.63Tg yr(-1) based on the initial uptake coefficient and the steady-state uptake coefficient. When the fraction of Al2O3 in authentic atmospheric particles is taken into account, the annual flux of OCS due to heterogeneous reaction on atmospheric particles in the troposphere should be 0.02-0.10 Tg yr(-1). (c) 2007 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000253851500012 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21952]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Liu, Yongchun,He, Hong,Mu, Yujing. Heterogeneous reactivity of carbonyl sulfide on alpha-Al2O3 and gamma-Al2O3[J]. ATMOSPHERIC ENVIRONMENT,2008,42(5):960-969. |
| APA | Liu, Yongchun,He, Hong,&Mu, Yujing.(2008).Heterogeneous reactivity of carbonyl sulfide on alpha-Al2O3 and gamma-Al2O3.ATMOSPHERIC ENVIRONMENT,42(5),960-969. |
| MLA | Liu, Yongchun,et al."Heterogeneous reactivity of carbonyl sulfide on alpha-Al2O3 and gamma-Al2O3".ATMOSPHERIC ENVIRONMENT 42.5(2008):960-969. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。