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Coupling catalytic hydrolysis and oxidation for CS(2) removal
Wang Li; Wu Diyong; Wang Shudong; Yuan Quan
KeywordCarbon Disulfide Coupling Process Low-temperature Removal
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
2008
Volume20Issue:4Pages:436-440
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS SubjectEnvironmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
WOS KeywordLOW-TEMPERATURE HYDROLYSIS ; CARBON-DISULFIDE ; HYDROGEN-SULFIDE ; ALUMINA CATALYSTS ; ACTIVATED CARBONS ; SULFUR
AbstractCS(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-).
Language英语
WOS IDWOS:000254963300009
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140981
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Dalian 160023, Peoples R China
Recommended Citation
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.
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