期刊
JOURNAL OF MATERIALS SCIENCE
卷 55, 期 9, 页码 3833-3844出版社
SPRINGER
DOI: 10.1007/s10853-019-04216-x
关键词
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资金
- National Natural Science Foundation of China [51704230]
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources in P.R. China [KF2019-7]
- Shannxi Key Research and Development Project [2019ZDLSF05-05-01]
- 2019 Shaanxi Provincial Natural Science Basic Research Program Enterprise Joint Fund Project [2019JL01]
- Natural Science Basic Research Plan in Shaanxi Province of China [2018JM5048]
- 2019 Scientific Research Plan by the Geological Research Institute for Coal Green Mining of Xi'an University of Science and Technology [MTy2019-16]
Development of denitration catalysts is highly important to controlling the level of NOx pollution. In this article, we report a novel CuO-MoO2-CeO2 catalyst with a yolk-albumen-shell structure supported on commercial gamma-Al2O3 for the denitration study. The yolk catalyst CuO/gamma-Al2O3 was first prepared with impregnation method by loading CuO on the gamma-Al2O3 support, which provides a platform for further loading MnO, Cr2O3 or MoO2 as the albumen component. While measurements confirmed CuO-MoO2/gamma-Al2O3 as the best choice, the final CuO-MoO2-CeO2/gamma-Al2O3 yolk-albumen-shell catalyst was formed by loading CeO2 as the shell. The denitration performance of different catalysts in the presence or absence of SO2 was studied, followed by the investigation of denitration mechanism through XRD and SEM characterizations. The investigation reveals that the denitration performance of catalysts highly depends on their structures and compositions, which could be affected in the presence of SO2. In particular, the CuO-MoO2-CeO2/gamma-Al2O3 catalyst, prepared under the conditions of roasting temperature of 400 degrees C, roasting time of 4 h and loading of 5%, shows outstanding SO2-resistance performance while its denitration efficiency is maintained between 81 and 83%.
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