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．
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 O1s[4]. 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.
出处
《内蒙古大学学报（自然科学版）》
CAS
CSCD
1996年第2期203-207,共5页
Journal of Inner Mongolia University：Natural Science Edition
基金
国家自然科学基金
