Combustion synthesis of copper-nickel catalysts for hydrogen production from ethanol
Combustion synthesis of copper-nickel catalysts for hydrogen production from ethanol
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DOI：
10.1016/j.cej.2015.01.012
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发表时间：
2015-10-15
影响因子：
15.1
通讯作者：
Wolf, E. E.
中科院分区：
文献类型：
--
作者：
Kumar, A.;Cross, A.;Wolf, E. E.
采用溶液燃烧法合成了Cu基和Ni基催化剂。考察了该催化剂对乙醇分解反应的催化活性和氢气选择性。发现燃烧溶液中燃料含量的量极大地影响合成催化剂的物相和微观结构。原位X射线吸收光谱（XAS）的研究进行了研究的还原催化剂含有铜和镍的混合氧化物。还原的催化剂进一步经受氧化环境以在催化剂氧化期间收集原位XAS数据。这些研究表明，催化剂氧化态在预处理过程的最初几分钟内迅速变化，然后逐渐唐斯。(C)2015 Elsevier B.V.版权所有。
Cu and Ni based catalysts were synthesized using solution combustion synthesis method. The catalytic activity and hydrogen selectivity were investigated for ethanol decomposition reaction. The amount of fuel content in the combustion solution was found to greatly affect the phase and the microstructure of the synthesized catalyst. In situ X-ray absorption spectroscopy (XAS) studies were carried out to study the reduction of the catalyst containing mixed oxides of copper and nickel. The reduced catalyst was further subjected to an oxidizing environment to collect the in situ XAS data during the oxidation of the catalyst. These investigations show that the catalyst oxidation state changes rapidly in the first few minutes of the pretreatment process and then gradually slows downs. (C) 2015 Elsevier B.V. All rights reserved.