文献类型：会议论文

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

作者：Wang, Xingjun[1,2,3];Fan, Maohong[1,2];Huang, Xin[1,2,4];Tang, Mingchen[1,2];Yu, Guangsuo[3];Liu, Haifeng[3];Wang, Fuchen[3];Adidharma, Hertanto[1,2];Gasem, Khaled A. M.[1,2];Radosz, Maciej[1,2]

机构：[1]Univ Wyoming, Dept Petr, Laramie, WY 82071 USA;[2]Univ Wyoming, Dept Chem Engn, Laramie, WY 82071 USA;[3]East China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[4]Natl Inst Clean & Low Carbon Energy NICE, Future Sci Pk, Beijing 102211, Peoples R China

会议论文集：Chinese National Conference on Energy and Environmental Science and Technology (EEST)

会议日期：APR 06-09, 2018

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：Ni-based catalyst; CO2-CH4 reforming; Syngas production; Self-reduction; CO2 utilization

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 degrees C, it performed with extremely high catalytic reactivity that the conversions of CO2 and CH4 were 90% and 97% at 900 degrees C, with gas hourly space velocity (GHSV) as high as 912,000 ml g(Cat)(-1) h(-1), which is 76 times higher than the GHSV reported in other literatures. Also, the nanostructured Ni based catalysts showed excellent durability with nearly zero deactivation in 10 h. Interestingly, the Ni-based catalysts did not need initial H-2 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 Ni-0 (about 10 nm) and MgAl2O4 crystallite.