A study of cobalt supported on silica nanosprings; a Fischer-Tropsch catalyst.
Catalytic performances of cobalt supported on silica nanosprings (Co/SiO2-NS) were evaluated and compared with conventional silica gel supported cobalt (Co/SiO2-gel) catalysts in the Fischer-Tropsch synthesis (FTS) of syngas to higher alkanes. Co/SiO2-gel catalysts were prepared by incipient wetness impregnation. To obtain Co/SiO2-NS catalysts, NS were first grown via a vapor-liquid-solid mechanism and subsequently decorated with Co nanoparticles using a thermal assisted reduction process. Both catalysts were characterized by means of Brunauer-Emmett-Teller (BET) measurements, temperature programmed reduction (TPR), scanning and transmission electron microscopes (SEM, TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). FTS performances were tested in a fixed-bed microreactor at 2300C and atmospheric pressure. The results showed that both catalysts have similar selectivity to C5+ hydrocarbons. Co/SiO2-NS, which had 75 times less Co content than the sol-gel catalyst, showed higher CO conversion rate of syngas to higher order alkanes.
Blaise-Alexis Fouetio Kengne and David N. McIlroy
Department of Physics, University of Idaho
Guanqun Luo and Armando McDonald
Department of Forest, Rangeland and Fire Sciences, University of Idaho
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|Title Annotation:||SESSION A5: FRIDAY, 9:30AM- 11:30AM PSUB BEAR RIVER ROOM (312)|
|Author:||Kengne, Blaise-Alexis Fouetio; McIlroy, David N.; Luo, Guanqun; McDonald, Armando|
|Publication:||Journal of the Idaho Academy of Science|
|Article Type:||Author abstract|
|Date:||Jun 1, 2013|
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