Kim, Sang Woo Kim, Inho Moon, Dong Ju 2024-01-20T12:01:12Z 2024-01-20T12:01:12Z 2021-09-05 2013-08 1533-4880 https://pubs.kist.re.kr/handle/201004/127834 Nanostructured magnesium oxide catalyst support materials with controlled morphology, and size were synthesized from a supercritical carbon dioxide/ethanol solution via chemical reaction of soluble precursors and subsequent thermal decomposition. Leaf-like magnesium hydroxide precursors with high specific surface area were formed by a low-temperature chemical reaction at below 140 degrees C, while magnesium carbonate cubes with a very low surface area less than 3.3 m(2)/g were formed by temperature-induced phase transition from a loose to a dense structure during carbonation reaction at above 150 degrees C. The specific surface area has significantly increased higher than 90 m(2)/g due to the creation of highly porous MgO cubes with mesopore structure formed after thermal decomposition of the magnesium carbonate precursors. Ni-magnesium oxide catalysts with bimodal pore structure were finally formed by the consequence of packing heterogeneity of the porous magnesium oxides with different morphologies and sizes. English AMER SCIENTIFIC PUBLISHERS Synthesis and Characterization of Magnesium Oxide Supported Catalysts with a Meso-Macropore Structure Article 10.1166/jnn.2013.7038 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.13, no.8, pp.5750 - 5753 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 13 8 5750 5753 scie scopus 000320632200083 2-s2.0-84883347479 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article Meso-Macroporous Magnesium Oxide Catalyst Support Supercritical Fluid