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Coupling catalytic hydrolysis and oxidation for CS(2) removal
Wang Li; Wu Diyong; Wang Shudong; Yuan Quan
关键词Carbon Disulfide Coupling Process Low-temperature Removal
刊名JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
2008
20期:4页:436-440
收录类别SCI
文章类型Article
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
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-).
语种英语
WOS记录号WOS:000254963300009
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140981
专题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.
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