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Co-Promoted Cu/ZnO Catalysts for Fischer-Tropsch Synthesis

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Abstract:

Co-promoted Cu/ZnO catalysts were studied for Fischer-Tropsch synthesis (FTS). All catalysts were prepared by the co-precipitation method, having the mass ratio of Co:Cu:Zn=0 (unpromoted), 0.05, 0.5:1:1, and characterized by X-ray diffraction (XRD), X-ray absorption spectroscopy (XAS), including X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS). From XRD and XAS, the results confirmed the phase transformation of CuO to Cu foil and Co3O4 to Co foil in Co-promoted catalysts after reduction. After FTS reaction testing, the Co-promoted catalysts showed the decrease in methanol selectivity of 15 and 1.6% for 0.05Co-Cu/ZnO and 0.5Co-Cu/ZnO, respectively, and the increase in C5-C15 selectivity during 30 h of reaction.

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Periodical:

Solid State Phenomena (Volume 266)

Pages:

117-121

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.266.117

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Online since:

October 2017

Authors:

Piyasak Akcaboot, Napat Kanokpornwasin, Monthida Raoarun, Patraporn Saiwattanasuk, Pinsuda Viravathana*

Keywords:

Fischer-Tropsch Synthesis, Methanol, Syngas

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© 2017 Trans Tech Publications Ltd. All Rights Reserved

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