The Preparation of Copper-Manganese Catalysts Using a Sequentially Feeding Microreactor

被引：0
作者：
Jiang, Xin [1 ,2 ]
Han, Bing [1 ]
Fu, Jiawei [1 ]
机构：
[1] Zhejiang Univ, Coll Chem & Biol Engn, Hangzhou 310027, Peoples R China
[2] Zhejiang Univ, Zhejiang Prov Key Lab Adv Chem Engn Manufacture Te, Hangzhou 310058, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2024年 / 64卷 / 01期
基金：
中国国家自然科学基金;
关键词：
TOLUENE OXIDATION; OXIDE CATALYSTS; COMBUSTION; PERFORMANCE; MN; OXYGEN; CO; ENHANCEMENT; PRECURSORS; EVOLUTION;
D O I：
10.1021/acs.iecr.4c03029
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The Cu-Mn interaction in copper-manganese composite oxide catalysts is crucial for their catalytic oxidation activity of volatile organic compounds (VOCs). In this study, highly dispersed copper-manganese coprecipitates were synthesized using a microreactor, and the effects of feeding intervals on the structure of the precipitates and catalysts were investigated by means of X-ray diffraction (XRD), Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). The results indicate that sequential feeding can produce coprecipitates with better uniformity. An appropriate time difference between the Mn2+ and Cu2+ feeds can make the coprecipitate more uniform and enhance the Cu-Mn interactions in the catalyst. Higher ratios of both surface Mn3+/Mn4+ and Olatt/Oads are considered attributable to better catalytic performance.
引用
收藏
页码：135 / 142
页数：8
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