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- W2074746729 abstract "CO2 gasification of Wyodak low-sulfur sub-bituminous coal from the Powder River Basin (PRB) of Wyoming was conducted in a fixed-bed laboratory gasifier at atmospheric pressure with Na2CO3, an inexpensive catalyst widely available in Wyoming. The sodium effect on the coal pyrolysis and the sodium forms existing during the char gasification were investigated using thermo-gravimetric analyses (TGA) and X-ray diffraction (XRD) analyses, respectively. Sodium was found to decrease the tar production and promote the char condensation during the pyrolysis. The interaction between added sodium and the minerals in Wyodak coal were observed during the char gasification. Grain, integrated, and random pore models were employed to fit the kinetic data obtained under both non-catalytic and catalytic conditions. The apparent activation energies of the coal-CO2 gasification without and with use of the catalyst (3 wt.% Na) are ~ 91 kJ/mol and ~ 64 kJ/mol, respectively, a 30% decrease. Thus, Na2CO3 is a promising catalyst for the PRB coal-CO2 gasification." @default.
- W2074746729 created "2016-06-24" @default.
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- W2074746729 date "2015-02-01" @default.
- W2074746729 modified "2023-10-17" @default.
- W2074746729 title "Catalytic CO2 gasification of a Powder River Basin coal" @default.
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- W2074746729 doi "https://doi.org/10.1016/j.fuproc.2014.09.028" @default.
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