MnxCo3 − xO4 solid solution as high-efficient catalysts for low-temperature oxidation of formaldehyde
MnxCo3 − xO4 solid solution as high-efficient catalysts for low-temperature oxidation of formaldehyde
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DOI：
10.1016/j.catcom.2012.08.003
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发表时间：
2012-11
影响因子：
3.7
通讯作者：
C. Shi;Yu Wang;Aimin Zhu;Bingbing Chen;C. Au
中科院分区：
文献类型：
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作者：
C. Shi;Yu Wang;Aimin Zhu;Bingbing Chen;C. Au
采用共沉淀法合成了MnxCo3−xO4固溶体，并首次测试了HCHO的氧化性能。通过 XRD、H2-TPR、XPS 研究证实了 MnxCo3−xO4 固溶体的形成。据观察，HCHO 在 75°C（GHSV=60,000h−1，相对湿度=50%（25°C））下完全转化，并在 50h 内保持不变。如此高的活性可归因于 MnxCo3−xO4 上有大量的表面氧。根据原位 DRIFT 的结果，我们提出了 MnxCo3−xO4 催化剂上 HCHO 氧化的反应途径。
MnxCo3−xO4solid solution was synthesized by co-precipitation method and tested for the first time for oxidation of HCHO. The formation of MnxCo3−xO4solid solution was confirmed by XRD, H2-TPR, XPS studies. It was observed that complete conversion of HCHO occurred at 75°C (GHSV=60,000h−1, relative humidity=50% (25°C)), and remained unchanged within 50h. Such high activity can be ascribed to the large amount of surface oxygen available on MnxCo3−xO4. According to the results of in situ DRIFTs, we proposed a reaction pathway for HCHO oxidation over MnxCo3−xO4catalyst.