NOx Storage at Low Temperature over MnOx–SnO2 Binary Metal Oxide Prepared Through Different Hydrothermal Process
NOx Storage at Low Temperature over MnOx–SnO2 Binary Metal Oxide Prepared Through Different Hydrothermal Process
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DOI：
10.1007/s10562-008-9649-4
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发表时间：
2009
影响因子：
2.8
通讯作者：
Lisi Wei;Junhua Li;Xingfu Tang
中科院分区：
文献类型：
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作者：
Lisi Wei;Junhua Li;Xingfu Tang
采用异相氧化还原法、均相氧化还原法和水热法制备了MnOx-SnO 2催化剂。在100 °C下进行NO吸附和脱附以研究NOx存储容量。所有样品均表现出较好的NOx储存性能，其中均相氧化还原水热法制备的样品表现出较好的NOx储存性能。采用XRD、BET、TPR、XPS等测试手段对催化剂的结构进行了表征。结果表明，Mn的氧化态和缺陷氧物种可能是负责高NOx存储容量。
Three MnOx–SnO2catalysts were successfully prepared by hetero-redox, homo-redox and common hydrothermal methods. NO adsorption and desorption were performed to investigate the NOxstorage capacity at 100 °C. All the samples showed good performances on NOxstorage, especially the sample prepared by homo-redox hydrothermal method. The XRD, BET, TPR, XPS measurements were used to characterize the structure of the catalysts. The results revealed that the oxidation state of Mn and the defect oxygen species could be responsible for the high NOxstorage capacity.