纳米片聚结Co3O4微球催化甲苯燃烧

doi:10.1016/S1872-2067(14)60072-3

催化学报 ›› 2014, Vol. 35 ›› Issue (9): 1475-1481.DOI: 10.1016/S1872-2067(14)60072-3

纳米片聚结Co₃O₄微球催化甲苯燃烧

王芳, 戴洪兴, 邓积光, 谢少华, 杨黄根, 韩文

北京工业大学环境与能源工程学院北京市区域大气污染控制重点实验室和化学化工系, 北京100124

收稿日期:2014-01-28 修回日期:2014-03-03 出版日期:2014-08-19 发布日期:2014-08-22
通讯作者: 戴洪兴
基金资助:
国家自然科学基金（21377008）；2013教育教学—研究生教育—2011年北京市优秀博士学位论文指导教师项目（20111000501）；2013教育教学—研究生培养—全国优博导师及培育基地建设项目（005000542513551）；北京市属高等学校创新团队建设提升计划项目.

Nanoplate-aggregate Co₃O₄ microspheres for toluene combustion

Fang Wang, Hongxing Dai, Jiguang Deng, Shaohua Xie, Huanggen Yang, Wen Han

Key Laboratory of Beijing on Regional Air Pollution Control and Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China

Received:2014-01-28 Revised:2014-03-03 Online:2014-08-19 Published:2014-08-22
Supported by:
This work was supported by the National Natural Science Foundation of China (21377008), 2013 Education and Teaching-Postgraduate Students Education-2011 Beijing Municipality Excellent Ph.D. Thesis Supervisor (20111000501), 2013 Education and Teaching-Postgraduate Students Cultivation-National Excellent Ph.D. Thesis Supervisor and Cultivation Base Construction (005000542513551), and the Foundation on the Creative Research Team Construction Promotion Project of Beijing Municipal Institutions.

摘要/Abstract

摘要：

采用乙二胺辅助的水热法制备了纳米片聚结的Co₃O₄微球. 利用多种分析技术表征了其物化性质，并评价了其对甲苯燃烧的催化活性. 结果表明，由添加1.0 ml乙二胺经140 ℃水热处理12 h后制得的Co₃O₄样品呈纳米片聚结的微球状表面形貌. Co₃O₄微球样品的比表面积约为66 m² g^-1. 与体相Co₃O₄样品相比，Co₃O₄微球样品具有较高的氧吸附物种浓度和较好的低温还原性. 当空速为20000 ml g^-1 h^-1时，在Co₃O₄微球样品上甲苯转化率达到50%和90%时的反应温度分别为230和254 ℃. 这与该样品具有较大的比表面积、较高的氧吸附物种浓度和较好的低温还原性相关.

关键词: 氧化钴微球, 纳米片形貌, 表面活性剂辅助水热合成, 甲苯燃烧

Abstract:

Nanoplate-aggregate microspherical Co₃O₄ was prepared by an ethylenediamine-assisted hydrothermal route and characterized by means of numerous techniques. Their catalytic activities for toluene combustion were evaluated. The Co₃O₄ sample obtained using 1.0 ml of ethylenediamine and a hydrothermal treatment at 140 ℃ for 12 h had a nanoplate-aggregate microspherical morphology. This microspherical Co₃O₄ sample with a surface area of 66 m² g^-1 had a higher adsorbed oxygen concentration and better low-temperature reducibility than bulk Co₃O₄. Over the Co₃O₄ microsphere sample, the temperatures required for 50% and 90% toluene conversions were 230 and 254 ℃, respectively, at a space velocity of 20000 ml g^-1 h^-1. The good catalytic performance of the Co₃O₄ microsphere sample was related to its large surface area, high oxygen adspecies concentration, and good low-temperature reducibility.

Key words: Cobalt oxide microsphere, Nanoplate morphology, Surfactant-assisted hydrothermal synthesis, Toluene combustion

王芳, 戴洪兴, 邓积光, 谢少华, 杨黄根, 韩文. 纳米片聚结Co₃O₄微球催化甲苯燃烧[J]. 催化学报, 2014, 35(9): 1475-1481.

Fang Wang, Hongxing Dai, Jiguang Deng, Shaohua Xie, Huanggen Yang, Wen Han. Nanoplate-aggregate Co₃O₄ microspheres for toluene combustion[J]. Chinese Journal of Catalysis, 2014, 35(9): 1475-1481.

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纳米片聚结Co₃O₄微球催化甲苯燃烧

Nanoplate-aggregate Co₃O₄ microspheres for toluene combustion

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