Mechanism of heterogeneous reaction of carbonyl sulfide on magnesium oxide

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

	Mechanism of heterogeneous reaction of carbonyl sulfide on magnesium oxide
	Liu, Yongchun ; He, Hong ; Xu, Wenqing ; Yu, Yunbo
刊名	JOURNAL OF PHYSICAL CHEMISTRY A
	2007-05-24
卷号	111 期号:20 页码:4333-4339
英文摘要	Heterogeneous reaction of carbonyl sulfide (OCS) on magnesium oxide (MgO) under ambient conditions was investigated by in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), quadrupole mass spectrometer (QMS), and density functional theory (DFT) calculations. It reveals that OCS can be catalytically hydrolyzed by surface hydroxyl on MgO to produce carbon dioxide (CO2) and hydrogen sulfide (H2S), and then H2S can be further catalytically oxidized by surface oxygen or gaseous oxygen on MgO to form sulfite (SO32-) and sulfate (SO42-). Hydrogen thiocarbonate (HSCO2-) was found to be the crucial intermediate. Surface hydrogen sulfide (HS), sulfur dioxide (SO2), and surface sulfite (SO32-) were also found to be intermediates for the formation of sulfate. Furthermore, the surface hydroxyl contributes not only to the formation of HSCO2- but also to HSCO2- decomposition. On the basis of experimental results, the heterogeneous reaction mechanism of OCS on MgO was discussed.
WOS记录号	WOS:000246569300028
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22474]
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,Xu, Wenqing,et al. Mechanism of heterogeneous reaction of carbonyl sulfide on magnesium oxide[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2007,111(20):4333-4339.
APA	Liu, Yongchun,He, Hong,Xu, Wenqing,&Yu, Yunbo.(2007).Mechanism of heterogeneous reaction of carbonyl sulfide on magnesium oxide.JOURNAL OF PHYSICAL CHEMISTRY A,111(20),4333-4339.
MLA	Liu, Yongchun,et al."Mechanism of heterogeneous reaction of carbonyl sulfide on magnesium oxide".JOURNAL OF PHYSICAL CHEMISTRY A 111.20(2007):4333-4339.