화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.16, No.6, 952-961, November, 2010
DOI10.1016/j.jiec.2010.04.005  Export Citation
Kinetic study of Fischer-Tropsch process on titania-supported cobalt-manganese catalyst
H. Atashi†, F. Siami, A.A. Mirzaei1, and M. Sarkari
  • Department of Chemical Engineering, Faculty of Engineering, University of Sistan & Baluchestan, P.O. Box 98164-161, Zahedan, Iran
  • 1Department of Chemistry, Faculty of Science, University of Sistan & Baluchestan, P.O. Box 98164-161, Zahedan, Iran
E-mail:
An active cobalt.manganese catalyst was prepared by co-precipitation method, and was also tested for hydrogenation of carbon monoxide to light olefins. The catalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) surface area techniques. The kinetic experiments on a well-characterized Co-Mn/TiO2 catalyst were performed in a fixed-bed micro-reactor, and were also conducted in a temperature range of 190-280 ℃, pressure range of 1-10 bar, H2/CO feed ratio (mol/mol) range of 1-3 and a space velocity range of 2700-5200 h^(-1). Two kinetic expressions based on Langmuir-Hinshelwood-Houngen.Watson (LHHW) mechanism were observed to fit the experimental data accurately for Fischer-Tropsch synthesis reaction. The kinetic parameters were estimated with non-linear regression method. Activation energies obtained were 35.131 and 44.613 kJ/mol for optimal kinetics models.
Keywords:Fischer-Tropsch synthesis;Co-precipitation;Cobalt-manganese catalyst;Fixed-bed reactor;Kinetic modeling
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