The activity of Ni 3 Sn powder after oxidation-reduction treatment was investigated for producing hydrogen from methanol under different conditions. The treated Ni 3 Sn powder, especially that the Ni 3 Sn oxidized at higher temperature showed a much higher activity than non-treated Ni 3 Sn; compared to Ni 3 Sn oxidized at 1073 K, Ni 3 Sn oxidized at 1373 K showed 10 times higher H 2 and CO generation rates, but similar low CO 2 and CH 4 generation rates. The activity of treated Ni 3 Sn significantly increased with increasing oxidation temperature and decreasing reduction temperature. The activity improvement of treated Ni 3 Sn powder was attributed to the formation of fine nanostructured Ni/SnO 2 particles, which were supposed to be the cause of the improved activity of Ni 3 Sn.
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