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题名: Adsorption and interaction of H2S/SO2 on TiO2
作者: Chen, YX;  Jiang, Y;  Li, WZ;  Jin, RC;  Tang, SZ;  Hu, WB
关键词: titania ;  the Claus reaction ;  hydrogen sulfide
刊名: CATALYSIS TODAY
发表日期: 1999-04-06
卷: 50, 期:1, 页:39-47
收录类别: SCI ;  ISTP
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Adsorption and interaction of H2S/SO2 on titania as well as on alumina for comparison has been studied by temperature programmed desorption (TPD), infrared (IR) spectroscopy and temperature programmed electronic conductivity (TPEC) techniques. It was found that the adsorption of both H2S acid SO2 on TiO2 is much greater than on Al2O3. The electronic conductivity of TiO2 measured by TPEC varies significantly as adsorption and desorption takes place on TiO2, showing a strong interaction between TiO2 and adsorbates. At temperature above 200 degrees C, H2S or SO2 adsorbed on TiO2 can be converted into S, H2O and SO2 or SO3. While on the hydrogen treated TiO2, H2S is decomposed into S and H-2, SO2 into S. The active sites on TiO2 surface cannot be so strongly adsorbed by SO2 that it is much more resistant to the sulfation reaction. Unlike TiO2, Al2O3 only provides surface adsorption sites, which can be readily sulfated. The data obtained support one's understanding why TiO2 exhibits a better catalytic performance than that of Al2O3 as a Claus reaction catalyst. (C) 1999 Elsevier Science B.V. All rights reserved.
关键词[WOS]: HYDROGEN-SULFIDE ;  ALUMINA CATALYST ;  CLAUS CATALYSIS ;  SULFUR-DIOXIDE ;  SO2 ;  ANATASE ;  FTIR ;  H2S
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000079330900006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/85185
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Qi Lu Petrochem Co, SINOPEC, Qi Lu 255400, Shandong, Peoples R China

Recommended Citation:
Chen, YX,Jiang, Y,Li, WZ,et al. Adsorption and interaction of H2S/SO2 on TiO2[J]. CATALYSIS TODAY,1999,50(1):39-47.
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