Production of hydrogen by steam reforming of ethanol over cobalt and nickel catalysts supported on perovskite-type oxides
Production of hydrogen by steam reforming of ethanol over cobalt and nickel catalysts supported on perovskite-type oxides
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DOI：
10.1016/j.catcom.2007.04.007
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发表时间：
2008-03
影响因子：
3.7
通讯作者：
Kohei Urasaki;Kazuhisa Tokunaga;Yasushi Sekine;M. Matsukata;E. Kikuchi
中科院分区：
文献类型：
--
作者：
Kohei Urasaki;Kazuhisa Tokunaga;Yasushi Sekine;M. Matsukata;E. Kikuchi
研究了以钙钛矿型氧化物LaAlO_3、SrTiO_3和BaTiO_3为载体的Co和Ni催化剂上乙醇的水蒸气重整反应。以LaAlO_3和SrTiO_3为载体的Co和Ni催化剂具有较高的催化活性和长期稳定性，并能抑制结焦，而Co/BaTiO_3催化剂的催化活性较低，抗结焦能力较差。Co在BaTiO_3上的平均粒径大于在SrTiO_3上的平均粒径。钙钛矿中的晶格氧可能起到阻碍结焦的积极作用，与Co/BaTiO_3相比，Co/SrTiO_3中晶格氧更频繁地参与焦炭中间体或前体的氧化。
The steam reforming of ethanol was performed over Co and Ni catalysts supported on perovskite-type oxides (LaAlO3, SrTiO3and BaTiO3). Co and Ni catalysts supported on LaAlO3and SrTiO3showed high catalytic activities and long-term stabilities and suppressed coke formation while Co/BaTiO3showed lower catalytic activities and poorer coking resistance. The average particle size of Co on BaTiO3was larger than that on SrTiO3. Lattice oxygen in perovskites may play positive roles in hindering coking and Co/SrTiO3has more frequent participation of lattice oxygen in the oxidation of intermediates or precursor of coke in comparison with Co/BaTiO3.