Heterogeneous uptake of carbonyl sulfide onto kaolinite within a temperature range of 220-330 K

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Heterogeneous uptake of carbonyl sulfide onto kaolinite within a temperature range of 220-330 K
	Liu, Yongchun; Ma, Jinzhu; Liu, Chang; He, Hong
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
	2010-12-28
卷号	115 期号:24311 页码:1-8
中文摘要	In this study the heterogeneous uptake of carbonyl sulfide (OCS) onto kaolinite was investigated using a Knudsen cell reactor within the temperature range of 220-330 K. Results showed that OCS could only be adsorbed at Al-OH sites on kaolinite reversibly within this temperature region. The initial true uptake coefficient was measured to be (1.68 +/- 0.12) x 10(-7) at 300 K. It showed no observable dependence on the pressure of OCS, while it varied significantly with temperature, and can be expressed as gamma(t) = exp(1293/T - 20.0)/[1 + exp(1293/T - 20.0]. The values of Delta H-obs and Delta S-obs during the adsorption process were -10.7 +/- 1.1 kJ mol(-1) and -166.3 +/- 4.5 J K-1 mol(-1), respectively. The activation energy for desorption of OCS on kaolinite was 19.5 +/- 1.1 kJ mol(-1). The uptake of OCS by kaolinite owing to reversible physisorption may have little influence on the sink of OCS in the atmosphere.
WOS记录号	WOS:000285837100002
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21084]
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,Ma, Jinzhu,Liu, Chang,et al. Heterogeneous uptake of carbonyl sulfide onto kaolinite within a temperature range of 220-330 K[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2010,115(24311):1-8.
APA	Liu, Yongchun,Ma, Jinzhu,Liu, Chang,&He, Hong.(2010).Heterogeneous uptake of carbonyl sulfide onto kaolinite within a temperature range of 220-330 K.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,115(24311),1-8.
MLA	Liu, Yongchun,et al."Heterogeneous uptake of carbonyl sulfide onto kaolinite within a temperature range of 220-330 K".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 115.24311(2010):1-8.