Sulfur resilient steam reforming catalysts are of great interest for the development of solid oxide fuel cell systems for aeronautic applications. We demonstrate that nickel–manganese catalysts exhibit substantially improved stability during steam reforming of sulfur containing fuels via a sulfur spillover strategy as compared to monometallic nickel catalysts. This is established via detailed deactivation studies of catalysts in steam reforming conditions with sulfur containing model fuels and real jet fuels (JP-8). Through detailed characterization of spent catalysts, we establish that the increased sulfur resilience is imparted by an increased sulfur capacity due to scavenging by manganese oxide species in close proximity to active nickel particles. Results presented in this work could pave the way for practical application of precious-metal-free steam reforming catalysts in sulfur rich streams, both in aeronautic SOFC systems and other applications.

中文翻译：

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航空燃料蒸汽重整的硫磺镍基催化剂

耐硫蒸汽重整催化剂对于用于航空应用的固体氧化物燃料电池系统的开发非常感兴趣。我们证明，与单金属镍催化剂相比，镍锰催化剂在通过硫溢出策略对含硫燃料进行蒸汽重整过程中显示出显着改善的稳定性。通过以下方式建立在蒸汽重整条件下使用含硫的模型燃料和实际喷气燃料对催化剂进行的详细失活研究（JP-8）。通过对废催化剂的详细表征，我们发现，由于锰氧化物物质对活性镍颗粒的清除作用很强，硫容量的增加使硫的弹性得以提高。这项工作中提出的结果可以为在航空SOFC系统和其他应用中在富硫流中实际应用无贵金属蒸汽重整催化剂铺平道路。