Catalytic methane decomposition to hydrogen and carbon over hydrotalcite‐derivative composition‐uniform and sintering‐resistant
Ni‐Fe
/
Al
2
O
3
alloy catalysts
Abstract:Ni-Fe/Al 2 O 3 alloy catalysts obtained from Ni 3-x Fe x Al (x = 0-1.2) hydrotalcitelike compounds are tested in CH 4 decomposition at 600 C to produce H 2 and carbon. By calcination at 500 C, nickel-iron-aluminum hydrotalcite is decomposed into Ni(Fe,Al)O solid solution; upon reduction at 800 C, Ni-Fe alloy with uniform composition and the average size of 9.4 to 10.3 nm is formed.The Ni-Fe/Al 2 O 3 alloy catalysts exhibit higher catalytic life and carbon yield than the Ni 3 Al counterpart, with the optimal al… Show more
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