In situ X-ray absorption spectroscopy study on water formation reaction of palladium metal nanoparticle catalysts
In situ X-ray absorption spectroscopy study on water formation reaction of palladium metal nanoparticle catalysts
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DOI：
10.1016/j.ijhydene.2016.08.189
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发表时间：
2017-03-16
影响因子：
7.2
通讯作者：
Nishihata, Yasuo
中科院分区：
文献类型：
--
作者：
Matsumura, Daiju;Taniguchi, Masashi;Nishihata, Yasuo
正确的氢气管理对核电厂的安全保障至关重要。催化剂上的水生成脱氢反应是制备无氢体系的备选方法之一。利用x射线吸收光谱技术，观察了钯金属纳米颗粒催化剂在成水反应过程中的原位和时间分辨结构变化。还研究了一氧化碳中毒对催化活性的影响。我们发现钯金属纳米颗粒表面氧化层的形成对水生成反应过程起着重要的作用。(C) 2016氢能源出版有限责任公司，由爱思唯尔有限公司出版。版权所有。
Proper management of hydrogen gas is very important for safety security of nuclear power plants. Hydrogen removal by water formation reaction on a catalyst is one of the candidates for creating hydrogen free system. We observed in situ and time-resolved structure change of palladium metal nanoparticle catalyst during the water formation reaction by using X-ray absorption spectroscopy technique. A poisoning effect by carbon monoxide on catalytic activity was also studied. We have found that the creation of oxidized surface layer on palladium metal nanoparticles plays an important role for the water formation reaction process. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.