TY - JOUR
T1 - Path lumping kinetic model for aqueous phase reforming of sorbitol
AU - Aiouache, Farid
AU - McAleer, Lisa
AU - Gan, Quan
AU - Al-Muhtaseb, Ala'A H.
AU - Ahmad, Mohammad N.
N1 - Funding Information:
This research was supported by QUESTOR Centre and Department of Education and Learning (DEL) of Northern Ireland .
PY - 2013
Y1 - 2013
N2 - This work presents a kinetic model for the aqueous phase reforming of sorbitol that uses a lumping scheme of intermediates and approximates the complex path to gas products via a reforming route and liquid oxygenate route including hydrodeoxygenation, decarbonylation and dehydrogenation reactions. The model was tested at temperatures ranging from 473 K to 523 K, using monometallic Ni and bimetallic Ni-Pd catalysts supported on γ-Al 2O3, ZrO2 and CeO2. The model revealed that the relevant competing paths were a function of the composition of catalyst and the conversion to the carbon gaseous products. Paths of reforming and CO2 methanation were more important than decarbonylation and hydrodeoxygenation at small conversions for all catalysts whereas the hydrodeoxygenation-decarbonylation towards alkanes release was more competitive than the reforming at high conversions with Ni/Al2O3 and Ni-Pd catalysts supported on ZrO2 and CeO2 but was still less competitive with Ni-Pd catalyst supported on γ-Al2O 3.
AB - This work presents a kinetic model for the aqueous phase reforming of sorbitol that uses a lumping scheme of intermediates and approximates the complex path to gas products via a reforming route and liquid oxygenate route including hydrodeoxygenation, decarbonylation and dehydrogenation reactions. The model was tested at temperatures ranging from 473 K to 523 K, using monometallic Ni and bimetallic Ni-Pd catalysts supported on γ-Al 2O3, ZrO2 and CeO2. The model revealed that the relevant competing paths were a function of the composition of catalyst and the conversion to the carbon gaseous products. Paths of reforming and CO2 methanation were more important than decarbonylation and hydrodeoxygenation at small conversions for all catalysts whereas the hydrodeoxygenation-decarbonylation towards alkanes release was more competitive than the reforming at high conversions with Ni/Al2O3 and Ni-Pd catalysts supported on ZrO2 and CeO2 but was still less competitive with Ni-Pd catalyst supported on γ-Al2O 3.
KW - Aqueous phase reforming
KW - Biofuel
KW - Catalyst
KW - Kinetics
KW - Lumping scheme
KW - Sorbitol
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U2 - 10.1016/j.apcata.2013.06.039
DO - 10.1016/j.apcata.2013.06.039
M3 - Article
AN - SCOPUS:84881101494
SN - 0926-860X
VL - 466
SP - 240
EP - 255
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -