An efficient oxidation catalyst was developed to increase the combustion efficiency of unreacted CO, H₂, and CH₄ in flue gas of solid oxide fuel cell (SOFC) stack. Amorphous Cu-Mn oxide catalyst (CuMnLa/Alumina) showed high catalytic activity, but significant degradation occurred due to phase transition to spinel structure at high temperatures (T > 650°C). La_0.8Sr_0.2Mn_0.67Cu_0.33O₃ perovskite (LSMC(p)) supported CuO or Mn₂O₃ exhibited improved thermal stability than CuMnLa/Alumina catalyst. Especially in case of 50Mn/LSMC(p), after the catalyst was exposed to 800°C for 24 h, T₅₀ of CO, H₂ and CH₄ was achieved at 170, 230, and 600°C, respectively. This result is much lower than that of CuMnLa/Alumina, which was exposed to the same condition. The high combustion efficiency is due to retention of the Cu²⁺-Mn³⁺ redox couple, and supply of lattice oxygen from LSMC(p), especially at high temperature. © 2017 American Institute of Chemical Engineers AIChE J, 2017

中文翻译：

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钙钛矿型La0.8Sr0.2Mn0.67Cu0.33O3负载CuO和Mn2O3上SOFC烟道气的催化燃烧。

开发了一种有效的氧化催化剂，以提高固体氧化物燃料电池（SOFC）烟道气中未反应的CO，H ₂和CH ₄的燃烧效率。非晶态Cu-Mn氧化物催化剂（CuMnLa / Alumina）表现出高催化活性，但由于在高温下（T> 650°C）相转变为尖晶石结构而发生了明显的降解。La _0.8 Sr _0.2 Mn _0.67 Cu _0.33 O ₃钙钛矿（LSMC（p））负载的CuO或Mn ₂ O ₃表现出比CuMnLa /氧化铝催化剂更高的热稳定性。尤其是在50Mn / LSMC（p）的情况下，将催化剂暴露于800°C 24小时后，T ₅₀分别在170、230和600°C下达到CO，H ₂和CH ₄的浓度。该结果比暴露于相同条件下的CuMnLa /氧化铝要低得多。高燃烧效率是由于保留了Cu ²⁺ -Mn ³⁺氧化还原对，以及从LSMC（p）提供晶格氧，特别是在高温下。©2017美国化学工程师学会AIChE J，2017