Jung, Jae-Sun Hong, Gi Hoon Yang, Eun-Hyeok Park, Ji In Moon, Dong Ju 2024-01-20T03:30:32Z 2024-01-20T03:30:32Z 2021-09-05 2016-10 1533-4880 https://pubs.kist.re.kr/handle/201004/123628 This paper focuses on the granule type of gamma-alumina-supported cobalt Fischer-Tropsch catalysts. Mesoporous gamma-Al2O3 spherical (similar to 1 mm diameter) catalysts were prepared and were characterized by X-ray diffraction and N-2 physisorption. The granular alumina surface areas were in the mesoporous range of 108 m(2)/g, with an average pore diameter of 10 nm. The metal loading efficiencies of cobalt and the promoter effect of gamma-Al2O3 supported cobalt catalysts were investigated by preparing a series of catalysts, consisting of 5-20 wt% cobalt and a second metal promoter (Ru or Pt), by a dry impregnation method. All catalysts were extensively characterized by N-2 physisorption, TPR, XPS, XRD, SEM/EDX and TEM methods. In addition, the catalysts were evaluated in terms of their Fischer-Tropsch synthesis activity and selectivity in a fixed-bed reactor. The addition of the promoter to supported cobalt catalysts significantly increased the dispersion of cobalt, the Co-metallic surface area and the cobalt surface density, resulting in an enhancement of the Fischer-Tropsch synthesis activity in the fixed-bed reactor. English AMER SCIENTIFIC PUBLISHERS CO/AL2O3 CATALYST METAL PERFORMANCE Investigation of Fischer-Tropsch Synthesis Over Granule Type of gamma-Alumina Supported Cobalt Catalyst Article 10.1166/jnn.2016.13169 1 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.16, no.10, pp.10404 - 10412 JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 16 10 10404 10412 scie scopus 000387100600048 2-s2.0-84991108742 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article CO/AL2O3 CATALYST METAL PERFORMANCE Fischer-Tropsch Synthesis Granule Type GTL-FPSO Cobalt Surface Density