Motomura Ayaka, Nakaya Yuki, Sampson Clarence, Higo Takuma, Torimoto Maki, Tsuneki Hideaki, Furukawa Shinya, Sekine Yasushi
Department of Applied Chemistry, Waseda University 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
Institute for Catalysts, Hokkaido University Kita 21 Nishi 10, Kita-ku Sapporo 001-0021 Japan.
RSC Adv. 2022 Oct 5;12(44):28359-28363. doi: 10.1039/d2ra05946k. eCollection 2022 Oct 4.
Dry reforming of methane (DRM) is a promising reaction able to convert greenhouse gases (CO and CH) into syngas: an important chemical feedstock. Several difficulties limit the applicability of DRM in conventional thermal catalytic reactions; it is an endothermic reaction that requires high temperatures, resulting in high carbon deposition and a low H/CO ratio. Catalysis with the application of an electric field (EF) at low temperatures can resolve these difficulties. Synergistic effects with alloys have also been reported for reactions promoted by the application of EF. Therefore, the synergistic effects of low-temperature DRM and Ni-Fe bimetallic catalysts were investigated using various methods and several characterisations (XRD, XPS, FE-STEM, ), which revealed that Ni-Fe binary catalysts show high performance in low-temperature DRM. In particular, the NiFe catalyst supported on CeO was found to carry out DRM in EF effectively and selectively by virtue of its bimetallic characteristics.
甲烷干重整（DRM）是一种很有前景的反应，能够将温室气体（CO和CH）转化为合成气：一种重要的化学原料。若干困难限制了DRM在传统热催化反应中的适用性；它是一个需要高温的吸热反应，导致高积碳和低H/CO比。在低温下施加电场（EF）进行催化可以解决这些困难。对于由EF促进的反应，也有关于与合金协同效应的报道。因此，使用各种方法和几种表征手段（XRD、XPS、FE-STEM等）研究了低温DRM与Ni-Fe双金属催化剂的协同效应，结果表明Ni-Fe二元催化剂在低温DRM中表现出高性能。特别是，负载在CeO上的NiFe催化剂凭借其双金属特性在EF中能有效且选择性地进行DRM。
