Thermodynamic analysis and experimental study of hydrogen production from oxidative reforming of n-butanol
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Author list: Hartley U.W., Amornraksa S., Kim-Lohsoontorn P., Laosiripojana N.
Publisher: Elsevier
Publication year: 2015
Journal: Chemical Engineering Journal (1385-8947)
Volume number: 278
Start page: 2
End page: 12
Number of pages: 11
ISSN: 1385-8947
Languages: English-Great Britain (EN-GB)
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Abstract
A Gibbs free energy minimization method was applied to analyze the thermodynamics of hydrogen production via oxidative reforming of n-butanol. The conditions studied were a temperature range of 300-1100 ฐC under atmospheric pressure with steam to n-butanol molar feed ratios (SBR) ranging from 0 to 12 and oxygen to n-butanol molar feed ratios (OBR) of 0-6. The thermoneutral conditions can be obtained at OBR of 2.70-2.80 at 700 ฐC and 2.65-2.75 at 800 ฐC, respectively. The maximum hydrogen yield of 5.56 mol/molButanol can be achieved at 700 ฐC with SBR of 12, conditions under which carbon formation and methane generation are predicted to be relatively low. The thermodynamic predictions were in good agreement with experimental results using Ni/Al2O3 and Rh/Al2O3 catalysts, from which the reaction was studied at different SBR, OBR, and temperatures. Under atmospheric pressure at 700 ฐC with OBR of 2.70 and SBR of 9, the product yields from the reaction in the presence of Rh/Al2O3 were close to the thermodynamic values. ฉ 2015 Elsevier B.V.
Keywords
n-Butanol
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