TY - JOUR
T1 - Fischer-tropsch synthesis
T2 - Characterization and reaction testing of cobalt carbide
AU - Mohandas, Janet Chakkamadathil
AU - Gnanamani, Muthu Kumaran
AU - Jacobs, Gary
AU - Ma, Wenping
AU - Ji, Yaying
AU - Khalid, Syed
AU - Davis, Burtron H.
PY - 2011/11/4
Y1 - 2011/11/4
N2 - Hydrogenation of carbon monoxide was investigated for cobalt carbide synthesized from Co3O4 by CO carburization in a fixed-bed reactor. The cobalt carbide synthesized was characterized by BET surface area, X-ray diffraction, scanning electron microscopy, X-ray absorption near edge spectroscopy, and extended X-ray absorption fine structure spectroscopy. The catalysts were tested in the slurry phase using a continuously stirred tank reactor at P = 2.0 MPa, H2/CO = 2:1 in the temperature range of 493-523 K, and with space velocities varying from 1 to 3 Nl h-1 gcat-1. The results strongly suggest that a fraction of cobalt converts to a form with greater metallic character under the conditions employed. This was more pronounced on a Fischer-Tropsch synthesis run conducted at a higher temperature (523 versus 493 K).
AB - Hydrogenation of carbon monoxide was investigated for cobalt carbide synthesized from Co3O4 by CO carburization in a fixed-bed reactor. The cobalt carbide synthesized was characterized by BET surface area, X-ray diffraction, scanning electron microscopy, X-ray absorption near edge spectroscopy, and extended X-ray absorption fine structure spectroscopy. The catalysts were tested in the slurry phase using a continuously stirred tank reactor at P = 2.0 MPa, H2/CO = 2:1 in the temperature range of 493-523 K, and with space velocities varying from 1 to 3 Nl h-1 gcat-1. The results strongly suggest that a fraction of cobalt converts to a form with greater metallic character under the conditions employed. This was more pronounced on a Fischer-Tropsch synthesis run conducted at a higher temperature (523 versus 493 K).
KW - carburization
KW - cobalt
KW - cobalt carbide
KW - EXAFS
KW - Fischer-Tropsch synthesis
KW - XANES
UR - http://www.scopus.com/inward/record.url?scp=80655138685&partnerID=8YFLogxK
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U2 - 10.1021/cs200236q
DO - 10.1021/cs200236q
M3 - Article
AN - SCOPUS:80655138685
VL - 1
SP - 1581
EP - 1588
IS - 11
ER -