TY - JOUR
T1 - Iron incorporated Ni-ZrO 2 catalysts for electric power generation from methane
AU - Zhu, Huaiyu
AU - Wang, Wei
AU - Ran, Ran
AU - Su, Chao
AU - Shi, Huangang
AU - Shao, Zongping
PY - 2012/6
Y1 - 2012/6
N2 - On the purpose to perform as functional layer of SOFCs operating on methane fuel, NiFe-ZrO 2 alloy catalysts have been synthesized and investigated for methane partial oxidation reactions. Ni 4Fe 1-ZrO 2 shows catalytic activity comparable to that of Ni-ZrO 2 and superior to other Fe-containing catalysts. In addition, O 2-TPO analysis indicates iron is also prone to coke formation; as a result, most of NiFe-ZrO 2 catalysts do not show improved coking resistance than Ni-ZrO 2. Anyway, Ni 4Fe 1- ZrO 2 (Ni:Fe = 4:1 by weight) prepared by glycine-nitrate process shows somewhat less carbon deposition than the others. However, Raman spectroscopy demonstrates that the addition of Fe does reduce the graphitization degree of the deposited carbon, suggesting the easier elimination of carbon once it is deposited over the catalyst. Ni 4Fe 1-ZrO 2 has an excellent long-term stability for partial oxidation of methane reaction at 850°C. A solid oxide fuel cell with conventional nickel cermet anode and Ni 4Fe 1-ZrO 2 functional layer is operated on CH 4-O 2 gas mixture to yield a peak power density of 1038 mW cm -2 at 850°C, which is comparable to that of hydrogen fuel. In summary, the Ni 4Fe 1-ZrO 2 catalyst is potential catalyst as functional layer for solid-oxide fuel cells operating on methane fuel.
AB - On the purpose to perform as functional layer of SOFCs operating on methane fuel, NiFe-ZrO 2 alloy catalysts have been synthesized and investigated for methane partial oxidation reactions. Ni 4Fe 1-ZrO 2 shows catalytic activity comparable to that of Ni-ZrO 2 and superior to other Fe-containing catalysts. In addition, O 2-TPO analysis indicates iron is also prone to coke formation; as a result, most of NiFe-ZrO 2 catalysts do not show improved coking resistance than Ni-ZrO 2. Anyway, Ni 4Fe 1- ZrO 2 (Ni:Fe = 4:1 by weight) prepared by glycine-nitrate process shows somewhat less carbon deposition than the others. However, Raman spectroscopy demonstrates that the addition of Fe does reduce the graphitization degree of the deposited carbon, suggesting the easier elimination of carbon once it is deposited over the catalyst. Ni 4Fe 1-ZrO 2 has an excellent long-term stability for partial oxidation of methane reaction at 850°C. A solid oxide fuel cell with conventional nickel cermet anode and Ni 4Fe 1-ZrO 2 functional layer is operated on CH 4-O 2 gas mixture to yield a peak power density of 1038 mW cm -2 at 850°C, which is comparable to that of hydrogen fuel. In summary, the Ni 4Fe 1-ZrO 2 catalyst is potential catalyst as functional layer for solid-oxide fuel cells operating on methane fuel.
KW - Carbon deposition
KW - Methane partial oxidation
KW - Nickel-iron catalyst
KW - Solid-oxide fuel cells
UR - http://www.scopus.com/inward/record.url?scp=84861188296&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2012.03.060
DO - 10.1016/j.ijhydene.2012.03.060
M3 - 文章
AN - SCOPUS:84861188296
SN - 0360-3199
VL - 37
SP - 9801
EP - 9808
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 12
ER -
