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题名: Sulfurization of Hyteropoly Acids
作者: Wang Xinping1;  Xin Qin1;  Ren Tieli1
关键词: Heteropoly anion ;  Sulphurization ;  Oxygen-sulfur exchange
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 1996
DOI: 10.3866/PKU.WHXB19960207
卷: 12, 期:2, 页:124-129
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The sulfurization of several heteropoly acids (HPA), which have been applied as catalysts frequently in recent years, have been studied by IR spectra and temperature programmed sulphurization technology. The result showed that sulphurization of PMo12 is the easiest one among the three kinds of HPA (PMo12, PW12, SiW12). In addition, The trend that the two kinds of bridged oxygen in HPA were substituted by sulfur atoms prior to oxygen, is PMo12 > PW12 > SiW12. In the initial stage of sulphurization, some of oxygen atoms in HPA are substituted by sulfur atoms reversibly and the Keggin structure has been preserved during this process. For PW12 and SiW12, the Keggin structure can be preserved until the sulphurization temperature has been raised to 673K, and for the PMo12, this temperature is near room temperature. When the temperature exceed those mentioned above in the sulphurization process, the exchange between sulfur and oxygen become irreversible, and deep sulphurization of HPA may be accompanied with disintegration of the Keggin anion skeleton.
语种: 英语
WOS记录号: WOS:000207599500007
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142768
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wang Xinping,Xin Qin,Ren Tieli. Sulfurization of Hyteropoly Acids[J]. ACTA PHYSICO-CHIMICA SINICA,1996,12(2):124-129.
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