文献类型：期刊文献

英文题名：High-performance nano-structured Ni based catalysts for high-temperature CO2[sbnd]CH4 reforming—Greenhouse gases to syngas

作者：Wang, Xingjun[1,2]; Fan, Maohong[1]; Huang, Xin[1,3]; Tang, Mingchen[1]; Yu, Guangsuo[2]; Liu, Haifeng[2]; Wang, Fuchen[2]; Adidharma, Hertanto[1]; Gasem, Khaled A.M.[1]; Radosz, Maciej[1]

机构：[1] Departments of Petroleum and Chemical Engineering, University of Wyoming, Laramie, WY, 82071, United States; [2] Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science and Technology, Shanghai, 200237, China; [3] National Institute of Clean-and-Low-Carbon Energy [NICE], Future Science Park, Beijing, 102211, China

年份：2020

卷号：339

起止页码：344

外文期刊名：Catalysis Today

收录：EI(收录号：20192607113438)

语种：英文

外文关键词：Nickel - Aluminum compounds - Greenhouse gases - Magnesium compounds - Nanostructures - Nanocatalysts - Synthesis gas - Catalyst activity - Crystallites - Nickel oxide - Synthesis gas manufacture

摘要：CO2?CH4 reforming into syngas is an effective approach to the utilization of these two greenhouse gases. In this study, nano-structured Ni-based catalysts supported on spinel (MgAl2O4) for CO2?CH4 reforming were synthesized and evaluated under 750–900 °C, it performed with extremely high catalytic reactivity that the conversions of CO2 and CH4 were 90% and 97% at 900 °C, with gas hourly space velocity (GHSV) as high as 912,000 ml gCat?1 h?1, which is 76 times higher than the GHSV reported in other literatures. Also, the nano-structured Ni based catalysts showed excellent durability with nearly zero deactivation in 10 h. Interestingly, the Ni-based catalysts did not need initial H2 reduction as required with state-of-the-art reforming catalyst. The fresh Ni-based catalysts mainly consist of NiO and MgAl2O4 crystallites, while the spent ones mostly contain Ni0 (about 10 nm) and MgAl2O4 crystallite. ? 2019 Elsevier B.V.