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Received July 16, 2016
Accepted August 19, 2016
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Prospective application of carbon-silica derived from SiC-Si sludge as a support for Fe catalysts
Department of Chemical Engineering, Kongju National University, 1223-24 Cheonan-Daero, Cheonan, Chungnam 31080, Korea 1Rare Metals Research Center, Korea Institute of Geoscience and Mineral Resources, 124 Gwahang-ro, Yuseong-gu, Daejeon 34132, Korea 2Petroleum and Gas Research Laboratory, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea
hdjang@kigam.re.kr
Korean Journal of Chemical Engineering, January 2017, 34(1), 100-104(5), 10.1007/s11814-016-0241-0
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Abstract
A unique carbon-silica (30 wt%) material was prepared by H2O activation at 700 ℃ for 8 h with the carbon derived from SiC-Si sludge and the in-situ hydrolysis of the SiCl4 trapped in the pores of the carbon into silica. The BET surface area of the carbon-silica was 1,750m2/g and the pore volume by QSDFT was 1.13 cm3/g, 40% of which stemmed from micropores smaller than 2 nm with 60% from mesopores between 2 nm and 50 nm. The activated carbon-silica was loaded with Fe by means of chemical vapor infiltration (CVI) and incipient wetness impregnation (IWI). A hydrogen temperature-programmed reduction test showed that the activated carbon-silica is a prospective support material for Fe catalysts and that the dispersion of Fe in the carbon-silica is higher with CVI than with IWI.
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References
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