Park, Myung Hee Choi, Bong Kwan Park, Yoon Hwa Moon, Dong Ju Park, Nam Cook Kim, Young Chul 2024-01-20T06:34:05Z 2024-01-20T06:34:05Z 2021-09-05 2015-07 1533-4880 https://pubs.kist.re.kr/handle/201004/125270 Kinetic studies of mixed (steam and dry) reforming of methane on Ni/La/Al2O3 and Ni/La-Co (1, 3 wt%)/Al2O3 catalysts were performed in an atmospheric fixed-bed reactor. Kinetie parameters for the mixed reforming over these catalysts were obtained under reaction conditions free from heat and mass transfer limitations. Variables for the mixed reforming were the reaction temperature and partial pressure of reactants. The fitting of the experimental data for the rate of methane conversion, r(CH4), using the power law rate equation r(CH4) = k(Pr-CH4)(alpha)(P-CO2)(beta)(P-H2O)(gamma) showed that the reaction orders alpha, beta, and gamma are steady and obtained values equal to alpha (sic) 1, beta (sic) 0, and gamma (sic) 0. In other words, among CH4, CO2, H2O, and H-2, only CH4 reaction orders were not zero and they were affected by the promoters. The apparent activation energy on catalysts Ni/La/Al2O3, Ni/La-Co (1)/Al2O3 and Ni/La-Co (3)/Al2O3 is 85.2, 93.8, and 99.4 kJ/mol, respectively. The addition of Co to Ni/La/Al2O3 was increased the apparent activation energy of the mixed reforming reaction. And the Ni/La-Co (3 wt%)/Al2O3 catalyst showed the highest reforming activity and apparent activation energy. The Co promoters can increase the apparent activation energy of mixed reforming of methane. English AMER SCIENTIFIC PUBLISHERS CARBON-DIOXIDE GAS CH4 DEACTIVATION Kinetics for Steam and CO2 Reforming of Methane Over Ni/La/Al2O3 Catalyst Article 10.1166/jnn.2015.10403 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.15, no.7, pp.5255 - 5258 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 15 7 5255 5258 scie scopus 000348489200083 2-s2.0-84920829032 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CARBON-DIOXIDE GAS CH4 DEACTIVATION Kinetics Methane Mixed Reforming Ni-Based Catalysts Co La