用于室温的CeZrO纳米催化剂的甲醛氧化：动力学及pH值的影响
Formaldehyde Oxidation of CeZrO Nanocatalysts for Room Temperature: Kinetics and Effect of pH Value.
作者信息
Yang Zonglin, Qin Gaoyuan, Tang Ruijiu, Jia Lijuan, Wang Fang, Liu Tiancheng
机构信息
College of Chemistry and Environment, Yunnan Minzu University, Technology Innovation Team of Green Purification Technology for Industrial Waste Gas, Education Department of Yunnan, Key Laboratory of Environmental Functional Materials, Yunnan Province Education Department, Kunming 650504, China.
China Energy Engineering Group Yunnan Electric Power Design Institute Co., Ltd., Kunming 650051, China.
出版信息
Nanomaterials (Basel). 2023 Jul 14;13(14):2074. doi: 10.3390/nano13142074.
CeZrO catalysts were prepared via the co-precipitation method under different pH conditions. The catalysts were characterized via TEM, XRD, XPS, BET, Raman, and FTIR. The oxidation performance of formaldehyde was tested. Precipitation pH affects the physicochemical properties and performance of the CeZrO catalyst. By controlling the precipitation pH at 10.5, the CeZrO catalyst with the largest specific surface area, the smallest grain size with the best formaldehyde removal rate (98.85%), abundant oxygen vacancies, and the best oxidation performance were obtained. Meanwhile, the kinetic parameters of the catalyst were experimentally investigated and the calculated activation energy was 12.6 kJ/mol and the number of reaction steps was 1.4 and 1.2.
通过共沉淀法在不同pH条件下制备了CeZrO催化剂。通过透射电子显微镜（TEM）、X射线衍射（XRD）、X射线光电子能谱（XPS）、比表面积分析仪（BET）、拉曼光谱和傅里叶变换红外光谱（FTIR）对催化剂进行了表征。测试了甲醛的氧化性能。沉淀pH影响CeZrO催化剂的物理化学性质和性能。通过将沉淀pH控制在10.5，获得了具有最大比表面积、最小晶粒尺寸、最佳甲醛去除率（98.85%）、丰富氧空位和最佳氧化性能的CeZrO催化剂。同时，对催化剂的动力学参数进行了实验研究，并计算出活化能为12.6 kJ/mol，反应级数为1.4和1.2。
Zotero 插件