Synthesis and catalytic performance of CeOCl in Deacon reaction

Farra, Ramzi; Girgsdies, Frank; Frandsen, Wiebke; Hashagen , Maike; Schlögl, Robert; Teschner, Detre

doi:10.1007/s10562-013-1085-4

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Synthesis and catalytic performance of CeOCl in Deacon reaction

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Farra, Ramzi
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Girgsdies, Frank
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Frandsen, Wiebke
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl, Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Teschner, Detre
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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CeOCl_Catal.Lett_rv.pdf
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引用

Farra, R., Girgsdies, F., Frandsen, W., Hashagen, M., Schlögl, R., & Teschner, D. (2013). Synthesis and catalytic performance of CeOCl in Deacon reaction. Catalysis Letters, 143(10), 1012-1017. doi:10.1007/s10562-013-1085-4.

引用: https://hdl.handle.net/11858/00-001M-0000-0014-1CF4-6

要旨

Surface chlorinated CeO₂ is an efficient material for HCl oxidation, which raises the question whether an oxychloride phase could be also active in the same reaction. CeOCl was synthesized by solid state reaction of cerium oxide with anhydrous cerium chloride and tested in HCl oxidation using various feed compositions at 703 K. X-ray diffraction of post-reaction samples revealed that CeOCl is unstable, in both oxygen-rich and -lean conditions. Applying oxygen over-stoichiometric feeds led to complete transformation of CeOCl into CeO₂. Considerable HCl conversions were obtained only after this transformation, which confirms the essential role of bulk cerium oxide in this catalytic system.