Mn3O4/AC催化剂的制备及其催化甲苯燃烧性能研究
Preparation of Mn3O4/AC catalyst and its performance study on catalytic toluene combustion
董永利 1李硕 1王凡 1李志翔 1宋微娜1
作者信息
- 1. 黑龙江科技大学 环境与化工学院,哈尔滨 150022
- 折叠
摘要
为制备高效环保的过渡金属催化剂,促进甲苯氧化,利用原位生长法、原位氧化还原沉淀法和沉淀沉积法合成了三种不同的 Mn3O4/AC 催化剂.采用 XRD、SEM、N2 吸附-脱附、TPR、TPD等表征手段,分析Mn3O4/AC催化剂的结构,并通过甲苯的转化率评估其对甲苯的催化性能.结果表明,采用原位氧化还原沉淀法合成的Mn3O4/AC-RP催化剂具有最高效的催化甲苯燃烧活性,在质量空速为20 000 mL/(g·h),甲苯体积分数为1 000×10-10的条件下,在210℃时实现了对甲苯的完全转化,这与其优异的氧化还原能力和晶格氧移动性有关.
Abstract
This paper seeks to prepare an efficient and environmentally friendly transition metal cata-lysts for better toluene oxidation.The study involves synthesizing three different Mn3O4/AC catalysts with the in-situ growth method,in-situ redox precipitation method and deposition-precipitation method,per-forming the structural analysis of Mn3O4/AC catalysts by using the characterized methods,such as XRD,SEM,N2 adsorption-desorption,TPR and TPD,and evaluating the catalytic performance on toluene based on toluene conversion.The results show that Mn3O4/AC-RP catalyst synthesized by in-situ redox precipitation method has the most efficient catalytic toluene combustion activity,the complete conversion of toluene is at 210℃under the condition of the weight hourly space velocity of 20 000 mL/(g·h)and the toluene volume fraction of 1 000×10-10,as which is related to its excellent redox ability and lattice oxygen mobility.
关键词
催化甲苯燃烧/锰氧化物/活性炭/晶格氧移动性Key words
catalytic toluene combustion/manganese oxide/activated carbon/lattice oxygen mobil-ity引用本文复制引用
基金项目
黑龙江省自然科学基金项目(LH2022F051)
出版年
2024
国家科技期刊平台
NSTL
万方数据