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Ce掺杂对La1-xCexCoO3催化剂的结构和催化氧化性能的影响
  • ISSN号：1000-6818
  • 期刊名称：《物理化学学报》
  • 时间：0
  • 分类：O643[理学—物理化学;理学—化学]
  • 作者机构：[1]清华大学化学系,北京100084
  • 相关基金：国家自然科学基金（20433010,20571047）资助项目
作者： BULGAN, G, 梁淑惠[1], 滕飞[1], 姚文清[1], 朱永法[1]
关键词： 非晶态配合物, 钙钛矿型催化剂, 铈掺杂, 催化发光, 催化氧化, CO, Amorphous heteronuclear complex, Perovskite type catalyst, Ce dopant, Cataluminescence, Catalytic oxidation, CO
中文摘要：

采用非晶态配合物的方法合成了La1-xCexCoO3（x=0、0．05、0．1、0．2、0．3）催化剂，并采用X射线衍射（XRD）、透射电镜（TEM）和比表面测定仪（BET）等手段对催化剂的微观结构进行了研究．揭示了Ce掺杂对催化剂的钙钛矿结构，CO催化氧化以及催化氧化发光性能的影响规律．结果表明，在Ce^4＋掺杂部分取代La^3＋后，催化剂形成了镧不足的La1-xCeyФx-yCoO3（Ф是A位离子空位）钙钛矿相以及CeO2和Co3O4物相．与LaCoO3催化剂相比，x=0．1催化剂的CO催化氧化活性最高（T100％=290℃）．La1-xCexCoO3催化剂对CO催化氧化发光的响应与其催化活性密切相关．

英文摘要：

La1-xCexCoO3 （x=0, 0.05, 0.1, 0.2, 0.3） catalysts were synthesized by amorphous heteronuclear complexing method. The catalysts were characterized by XRD, TEM, and N2 adsorption isotherms. The cataluminescence （CTL） response to CO and the activities in the oxidation of CO over the catalysts were investigated. Results showed that La1-xCeyФx-yCoO3 perovskite with lanthanum deficiency, CeO2 and CO3O4 phases were formed after La^3＋ was substituted with Ce^4＋ in the catalyst. Compared with LaCoO3 catalyst, the catalyst with x=0.1 showed the highest activity for CO oxidation （T100%=290 ℃）. The CTL result is well consistent with the order of CO catalytic activity over La1-xCexCoO3 catalysts.

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期刊信息
  • 《物理化学学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:北京大学化学与分子工程学院承办
  • 主编：刘忠范
  • 地址：北京大学化学楼
  • 邮编：100871
  • 邮箱：whxb@pku.edu.cn
  • 电话：010-62751724
  • 国际标准刊号：ISSN：1000-6818
  • 国内统一刊号：ISSN：11-1892/O6
  • 邮发代号:82-163
  • 获奖情况:
  • 中文核心期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,英国英国皇家化学学会文摘,中国北大核心期刊（2000版）
  • 被引量:24781