Coupling catalytic hydrolysis and oxidation for CS(2) removal

	Coupling catalytic hydrolysis and oxidation for CS(2) removal
	Wang Li; Wu Diyong; Wang Shudong; Yuan Quan
刊名	journal of environmental sciences-china
	2008
卷号	20 期号:4 页码:436-440
关键词	carbon disulfide coupling process low-temperature removal
英文摘要	cs(2) removal was obtained by coupling catalytic hyidation on bi-functional catalyst. on the hydrolysis active sites, cs(2) is hydrolyzed to h(2)s, while on the oxidation active sites, h(2)s is oxidized to elemental s or sulfuric acid deposited on the porous support. the above can be expressed as follows: cs(2) (h(2)o) under right arrow cos (h(2)o) under right arrow h(2)s (o(2)) under right arrow s/so(4)(2-). h(2)s oxidation eliminates its prohibition on cs(2) hydrolysis so that the rate of coupling removal cs(2) is 5 times higher than that of cs(2) hydrolysis. the same active energy of hydrolysis and coupling reaction also indicates that h(2)s oxidation does not change the reaction mechanism of cs2 hydrolysis. temperature has obvious effect on the process while the mole ratio of o(2) concentration to cs(2) concentration (o/s) does not, especially in excess of 2.5. the formation of sulfuric acid on the catalyst surface poisons hydrolysis active sites and causes the decrease of left oh(-1) concentration on the catalysts surface. lower temperature is suggested for this bi-functional catalyst owing to the low yield ratio of s/so(4)(2-).
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	environmental sciences
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	low-temperature hydrolysis ; carbon-disulfide ; hydrogen-sulfide ; alumina catalysts ; activated carbons ; sulfur
收录类别	SCI
语种	英语
WOS记录号	WOS:000254963300009
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/140981]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 160023, Peoples R China
推荐引用方式 GB/T 7714	Wang Li,Wu Diyong,Wang Shudong,et al. Coupling catalytic hydrolysis and oxidation for CS(2) removal[J]. journal of environmental sciences-china,2008,20(4):436-440.
APA	Wang Li,Wu Diyong,Wang Shudong,&Yuan Quan.(2008).Coupling catalytic hydrolysis and oxidation for CS(2) removal.journal of environmental sciences-china,20(4),436-440.
MLA	Wang Li,et al."Coupling catalytic hydrolysis and oxidation for CS(2) removal".journal of environmental sciences-china 20.4(2008):436-440.