Operando XAFS studies of supported copper oxides for catalytic ammonia combustion
Operando XAFS studies of supported copper oxides for catalytic ammonia combustion
复制标题
DOI：
10.2109/jcersj2.17075
复制
发表时间：
2017-01-01
影响因子：
1.1
通讯作者：
Machida, Masato
中科院分区：
文献类型：
--
作者：
Hinokuma, Satoshi;Kawabata, Yusuke;Machida, Masato
通过原位X射线吸收精细结构光谱（operando XAFS）研究了氨燃烧反应过程中负载在硼酸铝（10A2B）上的氧化铜（CuOx）的局部结构。尽管在室温下制备的CuOx/10A2B中的CuOx可归为氧化铜（CuO），但在400℃的氨燃烧过程中，部分CuO被还原为氧化亚铜（Cu2O）。相比之下，CuOx/10A2B在空气中900℃热老化100小时后形成了铜铝尖晶石（CuAl2O4），其局部结构在600℃的氨燃烧过程中得以保留。（C）2017日本陶瓷学会。版权所有。
Local structures around copper oxides (CuOx) supported on aluminum oxide borates (10A2B) during the NH3 combustion reaction were studied by operando XAFS. Although CuOx in as-prepared CuOx/10A2B at room temperature can be assigned to CuO, the CuO was partly reduced to Cu2O during NH3 combustion at 400 degrees C. In contrast, CuAl2O4 was formed after thermal aging of CuOx/10A2B at 900 degrees C for 100 h in air, local structures of which were preserved during NH3 combustion at 600 degrees C. (C) 2017 The Ceramic Society of Japan. All rights reserved.