Preparation of Cu-Al/SiO Porous Material and Its Effect on NO Decomposition in a Cement Kiln.

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ID: 78403
2019
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Ranked #427 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
Nitrogen oxide (NOx) emissions have attracted much attention for increasing concern on the quality of the atmospheric environment. In view of NO decomposition in the cement production process, the preparation of Cu-Al/SiO porous material and its effect on NO decomposition were studied, and the denitrification mechanism was proposed in this paper. The NO decomposition performance of the Cu-Al/SiO porous material was tested via the experimental setup and infrared spectrometer and micro gas chromatography (GC). The result shows that the Cu-Al/SiO porous material with the template of cetyltrimethylammonium bromide (CTAB) had a better NO decomposition rate than materials with other templates when the temperature was above 500 °C, and NO decomposition rate could approach 100% at high temperatures above 750 °C. Structure analysis indicates that the prepared Cu-Al/SiO material structure was a mesoporous structure. The X-Ray Diffraction (XRD) and Ultraviolet-visible spectrophotometry (UV-Vis) results of the denitrification product show that the Cu-Al/SiO material mainly decomposed to CuO and SiO, and the CuO decomposed to CuO and O at high temperature. The Cu(I)O was considered as the active phase. The redox process between Cu(II)O and Cu(I)O was thought to be the denitrification mechanism of the Cu-Al/SiO porous material.
Reference Key
gan2019preparationmaterials Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Gan, Yanling;Cui, Suping;Ma, Xiaoyu;Guo, Hongxia;Wang, Yali;
Journal Materials (Basel, Switzerland)
Year 2019
DOI
E145
URL
Keywords
template cu-al/sio2 porous material no decomposition rate cement kiln denitrification mechanism

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