柱状Co3O4催化剂的乏风催化燃烧性能
Catalytic Combustion of Ventilation Air Methane over Co3O4 Rectangular Prism
作者单位E-mail
牛汝月 气体能源高效清洁利用山西省重点实验室, 太原 030024  
刘鹏程 气体能源高效清洁利用山西省重点实验室, 太原 030024  
李威 气体能源高效清洁利用山西省重点实验室, 太原 030024  
王爽 气体能源高效清洁利用山西省重点实验室, 太原 030024
太原理工大学环境科学与工程学院, 晋中 030600 
wangshuang@tyut.edu.cn 
李晋平 气体能源高效清洁利用山西省重点实验室, 太原 030024 jpli211@hotmail.com 
摘要: 通过两步法成功合成了由纳米粒子组装成的柱状Co3O4。第一步是通过简单的冷凝回流法合成柱状CoC2O4·2H2O。第二步将所制备的柱状CoC2O4·2H2O在350℃下煅烧2 h,使其分解形成Co3O4而不破坏原始形貌。通过粉末X射线衍射(PXRD),X射线光电子能谱(XPS),氮气吸附-脱附,扫描电镜(SEM),高分辨率透射电子显微镜(HRTEM)和H2程序升温还原(H2-TPR)表征柱状Co3O4的物化性质。结果表明,柱状Co3O4对乏风甲烷燃烧的催化活性远远高于商业Co3O4。柱状Co3O4优异的催化性能可能归因于其表面较高的Co3+含量,较高的表面吸附氧和大量暴露的{111}晶面族。
关键词: 工业催化  金属氧化物催化剂  催化活性  乏风甲烷
基金项目: 国家自然科学基金面上(No.21671147),山西省煤层气联合基金(No.2016012004)和高等学校科技创新项目资助。
Abstract: The Co3O4 rectangular prism assembled by nanoparticles has been successfully fabricated via a two-step method. The first step involves the synthesis of CoC2O4·2H2O rectangular prism by a simple condensing reflux method. The second step includes the calcination of the as-prepared CoC2O4·2H2O rectangular prism at 350℃ for 2 h, causing its decomposition to form Co3O4 rectangular prism without destructing of the original morphology. The mechanical properties were characterized by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), nitrogen adsorption-desorption, scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and H2 temperature-programmed reduction (H2-TPR). The results showed that the catalytic activity of Co3O4 rectangular prism for the combustion of ventilation air methane was higher than that of commercial Co3O4. The superior catalytic performance could be attributed to the high surface Co3+ content, high surface adsorbed oxygen content, and exposing the {111} planes.
Keywords: industrial catalysis  metal oxide catalyst  catalytic activity  ventilation air methane
投稿时间:2018-05-30 修订日期:2018-07-12
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牛汝月,刘鹏程,李威,王爽,李晋平.柱状Co3O4催化剂的乏风催化燃烧性能[J].无机化学学报,2018,34(10):1929-1935.
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