TY - JOUR
T1 - Oxidative steam reforming of ethanol for hydrogen production on M/Al 2O 3
AU - Hung, Chih Cheng
AU - Chen, Shing Li
AU - Liao, Yi Kai
AU - Chen, Chih Hao
AU - Wang, Jeng Han
N1 - Funding Information:
We are pleased to acknowledge the financial support from National Taiwan Normal University and the National Science Council , Taiwan, through contract number NSC98-2113-M-003-003-MY2 . We are grateful also for the XPS measurement from Prof. Wei-Hsiu Hung’s group in National Taiwan Normal University.
PY - 2012/3
Y1 - 2012/3
N2 - In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H 2O/ethanol and O 2/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO 2 on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H 2O/ethanol and O 2/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H 2O and O 2 efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO 2-modified catalyst, which shows better oxygen storage capability.
AB - In this work, we investigate oxidative steam reforming (OSR) of ethanol on a series of metals under various catalytic conditions (H 2O/ethanol and O 2/ethanol ratios) to understand the reaction mechanism and to optimize the catalytic conditions for optimal hydrogen production. There are three reaction pathways for OSR using these metals. Ethanol can be oxidized to acetaldehyde on Cu, Ag and Au, and it can be dehydrated to form ethylene on Co, Ni, Pd and Pt. Ethylene can form coke and degrade catalysts after the long-term OSR. In the third pathway, ethanol preferentially breaks its C-C bond and is further oxidized to CO or CO 2 on Ru, Rh and Ir, providing optimal hydrogen production. In addition, increasing H 2O/ethanol and O 2/ethanol ratios can improve catalytic activity, attributable to atomic oxygen from H 2O and O 2 efficiently rupturing the C-C bond of ethanol. This concept explains the improved performance of OSR on the CeO 2-modified catalyst, which shows better oxygen storage capability.
KW - Ethanol
KW - Hydrogenation
KW - Oxidative steam reforming
KW - Oxygen/ethanol ratio
KW - Water/ethanol ratio
UR - http://www.scopus.com/inward/record.url?scp=84857657265&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84857657265&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2011.12.060
DO - 10.1016/j.ijhydene.2011.12.060
M3 - Article
AN - SCOPUS:84857657265
SN - 0360-3199
VL - 37
SP - 4955
EP - 4966
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 6
ER -
