| Autor: |
Akcaboot, Piyasak, Kanokpornwasin, Napat, Raoarun, Monthida, Saiwattanasuk, Patraporn, Viravathana, Pinsuda |
| Zdroj: |
Diffusion and Defect Data Part B: Solid State Phenomena; October 2017, Vol. 266 Issue: 1 p117-121, 5p |
| Abstrakt: |
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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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