Sn.sup.2+ Regulated Thermal Stability of the Cerium Oxide Lattice During Soot Combustion

Sn.sup.2+ Regulated Thermal Stability of the Cerium Oxide Lattice During Soot Combustion

In this paper, Ce.sub.xSn.sub.1-xO.sub.y-F (x = 1, 0.75, 0.5, 0.25, 0) and Ce.sub.xSn.sub.1-xO.sub.y-A were prepared through a typical reverse co-precipitation method. The experimental results showed that Sn doping could improve the activity and thermal stability of CeO.sub.2 in different modes. Com...

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Veröffentlicht in:Catalysis letters 2023-05, Vol.153 (5), p.1464
Hauptverfasser: Zhou, Kun, Hu, Miaomiao, Zhao, Tingyi, Wang, Mengzhuo, Cui, Bing, Lai, Hongtao, Shao, Zhihui
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Cerium
Combustion
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container_issue 5
container_start_page 1464
container_title Catalysis letters
container_volume 153
creator Zhou, Kun
Hu, Miaomiao
Zhao, Tingyi
Wang, Mengzhuo
Cui, Bing
Lai, Hongtao
Shao, Zhihui
description In this paper, Ce.sub.xSn.sub.1-xO.sub.y-F (x = 1, 0.75, 0.5, 0.25, 0) and Ce.sub.xSn.sub.1-xO.sub.y-A were prepared through a typical reverse co-precipitation method. The experimental results showed that Sn doping could improve the activity and thermal stability of CeO.sub.2 in different modes. Comparing the activity and characterization of Ce.sub.xSn.sub.1-xO.sub.y-F and Ce.sub.xSn.sub.1-xO.sub.y-A, the improvement of catalyst activity was attributed to the Ce-O-Sn structure with more oxygen vacancies formed by Sn doping, whereas the enhancement of thermal stability was related to the Sn.sup.2+ remaining in the CeO.sub.2 lattice after accelerated aging. Therefore, a mechanism was proposed that Ce.sup.4+-O-Sn.sup.2+ is more stable than Ce.sup.4+-O-Sn.sup.4+ in Ce.sub.xSn.sub.1-xO.sub.y solid solution.
doi_str_mv 10.1007/s10562-022-04072-6
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The experimental results showed that Sn doping could improve the activity and thermal stability of CeO.sub.2 in different modes. Comparing the activity and characterization of Ce.sub.xSn.sub.1-xO.sub.y-F and Ce.sub.xSn.sub.1-xO.sub.y-A, the improvement of catalyst activity was attributed to the Ce-O-Sn structure with more oxygen vacancies formed by Sn doping, whereas the enhancement of thermal stability was related to the Sn.sup.2+ remaining in the CeO.sub.2 lattice after accelerated aging. 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title Sn.sup.2+ Regulated Thermal Stability of the Cerium Oxide Lattice During Soot Combustion
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