Effect of SnO2 on the structure and catalytic performance of Co3O4 for N2O decomposition

Effect of SnO2 on the structure and catalytic performance of Co3O4 for N2O decomposition
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SnO2对Co3O4结构及N2O分解催化性能的影响

DOI:
10.1016/j.catcom.2018.04.004
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发表时间:
2018-06
影响因子:
3.7
通讯作者:
Yongxiang Zhao
Yongxiang Zhao
中科院分区:
化学3区
文献类型:
--
作者:
Yongzhao Wang;Xiaobo Hu;Ke Zheng;Xuhui Wei;Yongxiang Zhao

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本研究的目的是研究 SnO2 添加对 Co3O4 的结构和 N2O 分解催化性能的影响。 SnO2-Co3O4 在存在或不存在水蒸气的情况下都表现出比 Co3O4 更好的催化活性。 SnO2-Co3O4的光谱表征表明,由于SnO2的添加,该固体具有更高的Co分散度、更小的Co3O4颗粒和更大的SBET。此外,SnO2/Co3O4界面处形成的Sn和Co氧化物之间的相互作用促进了Co2+的电子供给能力并促进表面氧的解吸,这可能被认为是SnO2-Co3O4对N2O分解具有优异催化性能的重要因素。
The scope of this study was to investigate the effect of SnO2addition on the structure and catalytic performance of Co3O4for N2O decomposition. SnO2-Co3O4exhibits much better catalytic activity in the absence or presence of water vapor than Co3O4. Spectroscopic characterization of SnO2-Co3O4showed that this solid possesses higher degree of Co dispersion, smaller Co3O4particles and larger SBETdue to the addition of SnO2. In addition, an interaction between Sn and Co oxides formed at the SnO2/Co3O4interface promotes the electron donation ability of Co2+and facilitates desorption of surface oxygen species, which might be considered as an important factor that contributes to the excellent catalytic performance of SnO2-Co3O4for N2O decomposition.
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