Lee Ye Hwan, Ahn Jeong Yoon, Nguyen Dinh Duc, Chang Soon Woong, Kim Sung Su, Lee Sang Moon
Department of Environmental Energy Engineering, Graduate School of Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 442-760 Korea.
Department of Environmental Energy Engineering, Kyonggi University 94-6 San, Iui-dong, Youngtong-ku Suwon-si Gyeonggi-do 442-760 Korea
RSC Adv. 2021 May 14;11(29):17648-17657. doi: 10.1039/d1ra02327f. eCollection 2021 May 13.
The CO methanation reaction of reduced and unreduced Ni based CeO, AlO, TiO and YO supported catalysts was investigated. The Ni/CeO and Ni/YO catalysts exhibited similar CO conversions at all reaction temperatures. The catalysts were studied by X-ray diffraction (XRD), H chemisorption, H temperature-programmed reduction (TPR), and diffuse reflection infrared Fourier transform spectroscopy (DRIFTS); the results suggested that the reducibility of both metal and support at low temperature, strong metal support interaction and small Ni particle size are important factors for low-temperature CO methanation. Based on the DRIFT studies, the difference in the CO adsorption properties and reaction pathway depending on the reduced and unreduced Ni based supported catalysts was discussed.
研究了还原和未还原的负载在CeO、AlO、TiO和YO上的镍基催化剂的CO甲烷化反应。在所有反应温度下，Ni/CeO和Ni/YO催化剂表现出相似的CO转化率。通过X射线衍射（XRD）、H化学吸附、H程序升温还原（TPR）和漫反射红外傅里叶变换光谱（DRIFTS）对催化剂进行了研究；结果表明，低温下金属和载体的还原性、强金属载体相互作用以及小的Ni粒径是低温CO甲烷化的重要因素。基于DRIFT研究，讨论了还原和未还原的负载型镍基催化剂在CO吸附性能和反应途径上的差异。
