Ok, Hye Jeong Park, Myung Hee Moon, Dong Ju Kim, Jong Ho Park, Nam Cook Kim, Young Chul 2024-01-20T08:03:17Z 2024-01-20T08:03:17Z 2021-09-04 2015-01 1533-4880 https://pubs.kist.re.kr/handle/201004/125965 Catalysts were investigated with respect to catalytic activity and coke formation in combined steam and carbon dioxide reforming of methane to develop a highly active and stable catalyst for gas to liquid processes. Ni/La-X/Al2O3 (X = Co, Ce, Mo) catalysts were prepared by an impregnation method. The combined steam and carbon dioxide reforming of methane reaction were studied as a function of high pressure (20 bar) in a fixed bed reactor system. X-ray diffraction, BET surface area, and H-2-temperature programmed reduction were used to observe the characteristics of the prepared catalysts. Coke formation of used catalysts was examined by scanning electron microscopy, transmission electron microscopy and the coke amount of used catalysts was measured by thermo gravimetric analysis. Catalysts with smaller particle size had a higher temperature of reduction, which had a positive effect on catalytic activity. The improvement in active site rise and dispersion and the lowest metal crystal size had an effect on catalyst activity. As a result, the Ni/La-Co/Al2O3 catalyst showed the highest activity at a reaction temperature of 800 degrees C and a reaction pressure of 20 bar. English AMER SCIENTIFIC PUBLISHERS CARBON-DIOXIDE SBA-15 CATALYSTS COMBINED STEAM GAS CH4 The Influence of Promoter on Ni(15)/La(5)/gamma-Al2O3 Catalyst in CO2-Steam Reforming of Methane to Syngas at High Pressure Article 10.1166/jnn.2015.8346 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.1, pp.449 - 453 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 15 1 449 453 scie scopus 000345054000079 2-s2.0-84920540197 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CARBON-DIOXIDE SBA-15 CATALYSTS COMBINED STEAM GAS CH4 Methane Steam Carbon Dioxide Reforming SCR Ni Catalyst