Photoemission Spectra of LiNiO2 Catalyst for Oxidative Coupling of Methane
Photoemission Spectra of LiNiO2 Catalyst for Oxidative Coupling of Methane
复制标题
LiNiO2 甲烷氧化偶联催化剂的光电子发射光谱
DOI：
10.7567/jjaps.38s1.51
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
O. Takayasu
中科院分区：
文献类型：
--
作者：
T. Miyazaki;M. Aoki;O. Takayasu
研究了具有层状结构的LiNiO 2的表面晶格氧物种对甲烷氧化反应的影响。LiNiO 2导致C2-烃的形成，而没有副产物的二氧化碳在初始阶段的反应，这是一个氧化偶联过程的表面晶格氧。为了了解催化活性的来源，测量了LixNi 2-xO 2（0<x ≤ 1）的光电子能谱。从价带结构的比较，这表明，各向异性的电荷分布和层状结构的活性晶格氧的形成和催化性能的LiNiO 2，分别作出贡献。
Surface-lattice oxygen species of LiNiO2 with a layered structure were investigated for an oxidative reaction of methane. LiNiO2 resulted in formation of C2-hydrocarbons without by-products of carbon dioxide at an initial stage reaction which was an oxidative coupling process by surface lattice oxygen. For understanding of the origin of the catalytic activities, photoemission spectra of LixNi2-xO2 (0<x≦1) were measured. From comparison of the valence band structures, it was suggested that an anisotropic charge distribution and the layered structure contributed to the formation of active lattice oxygen and the catalytic performance of LiNiO2, respectively.