| LaMO3及其相关催化剂的XPS研究 |
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| 引用本文： | 沈岳年,薛屏.LaMO3及其相关催化剂的XPS研究[J].内蒙古大学学报(自然科学版),1996,27(2):203-207. |
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| 作者姓名： | 沈岳年 薛屏 |
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| 作者单位： | 内蒙古大学化学系，宁夏大学化学系 |
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| 摘 要： | 以ＸＰＳ为主要研究工具，以ＬａＭＯ３（Ｍ＝Ｃｒ，Ｍｎ，Ｆｅ，Ｃｏ，Ｎｉ）及相关催化剂为主要研究对象，区分ＸＰＳ谱中二种Ｏ１ｓ峰，对晶格Ｏ１ａ和Ｌａ３ｄ５／２的主峰及Ｓｈａｋｅ－ｕｐ峰的化学位移给予解决．证明Ｊ１０６催化剂中无ＬａＭＯ３类化合物形成，而ＣＲ型燃烧催化剂中存在ＬａＭＯ３类化合物，并和催化剂的失活相关．ＣＲ催化剂中ＣＵ离子的存在形态以及ＣＲ催化剂的Ｓ中毒也由ＸＰＳ提供了证据．关键词
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| 关 键 词： | 钙钛矿型晶体，J106催化剂，CR型燃烧催化剂，X射线光电子能谱（XPS） |
Studies on LaMO_3 and its Relative Catalysts by XPS |
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| Shen Yuenian, Hu Ruisheng, Xue Ping.Studies on LaMO_3 and its Relative Catalysts by XPS[J].Acta Scientiarum Naturalium Universitatis Neimongol,1996,27(2):203-207. |
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| Authors: | Shen Yuenian Hu Ruisheng Xue Ping |
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| Abstract: | By X-ray photoelectron spectroscopy (XPS), LaMO3(M =Cr, Mn, Fe, Co, Ni )and its relativecatalysts have been investigated. It was showed by XPS patterns, that two O1s peaks were distinguished, one is crystal O1a. and another is adsorbing O1s4]. Chemical shifts of crystal O1s. and La3d5/2(main and shake up peaks) were interpreted by nonlocality of d-electron in LaMO3. It was provedthat none of LaMO3-lake Oxides had been formed in J106 methanation catalyst,however,LaMO3-like Oxides had been formed in CR combustion catalyst and related to deactivity of catalyst whenit was being used. The state of Cu ion in CR catalyst and sulfur poisoning of CR catalyst wereshown by XPS obviously also. |
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| Keywords: | perovskite J106 Catalyst CR-type combustion catalyst XPS |
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