Studies on Nanosized Iron Based Modified Catalyst for Fischer-Tropsch Synthesis Application

Authors
Park, MoonJuKang, Jung ShikNa, Ki PoongLee, Sang DeukAwate, S. V.Moon, Dong Ju
Issue Date
2011-02
Publisher
AMER SCIENTIFIC PUBLISHERS
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.2, pp.1447 - 1450
Abstract
To improve catalytic performance iron based catalyst, the effects of some metal promoters, especially potassium, copper and other transition metal oxides as well as different supports have been reported. A series of Fe/K/Cu catalysts promoted with magnesium and ceria by precipitation method, followed by impregnation method; keeping Cu and K content same. The catalysts were characterized by XRD, N-2 physisorption, TPR and TEM techniques. From XRD, the presence of hematite (Fe2O3) phase was detected in all precipitated iron catalysts and CFe2.5 phase in all used catalysts. TPR results showed that addition of Mg facilitated the reduction of Fe2O3 and decrease in reduction temperature. The catalytic performance was investigated in a fixed-bed reactor at 250 degrees C, 2 MPa pressure and H-2/CO molar ratio of 2. Concentration of Mg was found to affect the CO conversion and product distribution. It was found that precipitated iron catalyst Fe/Mg/Cu/K with Mg/Fe ratio of 0.1 showed highest conversion (60.6%) and C-5(+) selectivity (92.4%) among all catalysts tested.
Keywords
REDUCTION; REDUCTION; Fischer-Tropsch; Precipitated Iron Catalyst; Cu; Ceria; Magnesium Promoter
ISSN
1533-4880
URI
https://pubs.kist.re.kr/handle/201004/130682
DOI
10.1166/jnn.2011.3334
Appears in Collections:
KIST Article > 2011
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