Kim, Byung-Hyuk Yang, Eun-Hyeok Moon, Dong Ju Kim, Sang Woo 2024-01-20T06:31:54Z 2024-01-20T06:31:54Z 2022-01-25 2015-08 1533-4880 https://pubs.kist.re.kr/handle/201004/125154 The bead type MgO-MgAl2O4 catalyst supports with bimodal pore structures were fabricated via an extrusion molding of gels derived from the precursor mixture of mesoporous MgO particles and aluminum magnesium hydroxide, followed by heat treatment. To investigate the effect of macro pore structures on the catalytic activity of the Ni/MgO-MgAl2O4 catalysts in the steam and carbon dioxide reforming of methane (SCR), two kinds of the catalysts with largely different macro pore volumes and sizes but nearly the same meso pore volume and size were compared. The bimodal catalyst with a large macro pore size and volume exhibited a highly enhanced CO2 conversion from 22.3 to 37.1% but a slightly reduced CH4 conversion from 95.3 to 92.1% at the same feed ratio. The SCR results show that the large macro pores can lead to a highly enhanced mass transfer rate of CO2 absorption into the pore channels of the magnesium alumina spinel. English American Scientific Publishers Ni/MgO-MgAl2O4 Catalysts with Bimodal Pore Structure for Steam-CO2-Reforming of Methane Article 10.1166/jnn.2015.10474 1 Journal of Nanoscience and Nanotechnology, v.15, no.8, pp.5959 - 5962 Journal of Nanoscience and Nanotechnology 15 8 5959 5962 N scie scopus 000350268100073 2-s2.0-84920713690 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article STEAM Structural Catalyst Meso-Macro Pore Bimodal Structure Steam Reforming Spinel