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

IF 3.8 3区 工程技术 Q2 ENGINEERING, CHEMICAL
Xin Jiang, Bing Han, Jiawei Fu
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引用次数: 0

Abstract

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.

Abstract Image

顺序进料微反应器制备铜锰催化剂
铜锰复合氧化物催化剂中Cu-Mn相互作用对其催化氧化挥发性有机化合物(VOCs)的活性至关重要。采用微反应器合成了高度分散的铜锰共沉淀物,并通过x射线衍射(XRD)、拉曼光谱(Raman spectroscopy)和x射线光电子能谱(XPS)研究了加料间隔对沉淀物和催化剂结构的影响。结果表明,顺序进料可产生均匀性较好的共沉淀。适当的Mn2+和Cu2+进料时间差可以使共沉淀更加均匀,增强催化剂中Cu-Mn的相互作用。更高的表面Mn3+/Mn4+和Olatt/Oads比率被认为是由于更好的催化性能。
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来源期刊
Industrial & Engineering Chemistry Research
Industrial & Engineering Chemistry Research 工程技术-工程:化工
CiteScore
7.40
自引率
7.10%
发文量
1467
审稿时长
2.8 months
期刊介绍: ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.
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