Yoshida Hiroshi, Yamaoka Ryohei, Arai Masahiko
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Int J Mol Sci. 2014 Dec 25;16(1):350-62. doi: 10.3390/ijms16010350.
Hydrogen production through steam reforming of ethanol was investigated with conventional supported nickel catalysts and a Ni-containing smectite-derived catalyst. The former is initially active, but significant catalyst deactivation occurs during the reaction due to carbon deposition. Side reactions of the decomposition of CO and CH4 are the main reason for the catalyst deactivation, and these reactions can relatively be suppressed by the use of the Ni-containing smectite. The Ni-containing smectite-derived catalyst contains, after H2 reduction, stable and active Ni nanocrystallites, and as a result, it shows a stable and high catalytic performance for the steam reforming of ethanol, producing H2.
采用传统的负载型镍催化剂和一种源自蒙脱石的含镍催化剂，对乙醇蒸汽重整制氢进行了研究。前者初始活性较高，但在反应过程中由于积碳会发生显著的催化剂失活。CO和CH4分解的副反应是催化剂失活的主要原因，而使用含镍蒙脱石可以相对抑制这些反应。经过H2还原后，源自蒙脱石的含镍催化剂含有稳定且活性高的Ni纳米微晶，因此，它对乙醇蒸汽重整制氢表现出稳定且高的催化性能。
