利用17O固体核磁共振波谱分析Ni/CeO2表面镍离子含量

doi:10.11938/cjmr20192765

波谱学杂志 ›› 2020, Vol. 37 ›› Issue (1): 52-60.doi: 10.11938/cjmr20192765

利用¹⁷O固体核磁共振波谱分析Ni/CeO₂表面镍离子含量

王杨, 杨昌菊, 温玉洁, 陈俊超, 杜佳欢, 彭路明

南京大学化学化工学院, 介观化学教育部重点实验室和生命化学协同创新中心, 江苏南京 210023

收稿日期:2019-07-08 出版日期:2020-03-05 发布日期:2019-10-09
通讯作者: 彭路明,Tel:15105171931,E-mail:luming@nju.edu.cn. E-mail:luming@nju.edu.cn
基金资助:
the National Natural Science Foundation of China (91745202, 21573103, 21661130149).

Analysis of the Concentrations of Surface Ni Ions in Ni/CeO₂ With ¹⁷O Solid-State NMR Spectroscopy

WANG Yang, YANG Chang-ju, WEN Yu-jie, CHEN Jun-chao, DU Jia-huan, PENG Lu-ming

Key Laboratory of Mesoscopic Chemistry of Ministry of Education and Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China

Received:2019-07-08 Online:2020-03-05 Published:2019-10-09
Supported by:
the National Natural Science Foundation of China (91745202, 21573103, 21661130149).

1. 补充材料.pdf(400KB)

摘要/Abstract

摘要： 本文以具有重要催化应用前景的Ni/CeO₂体系为例，借助¹⁷O固体核磁共振波谱技术，根据表面氧物种¹⁷O NMR信号的变化，尝试分析了Ni/CeO₂表面层中镍离子的含量.分析结果显示，10% NiCe-500和20% NiCe-300两种Ni/CeO2样品表面第一和第二金属离子层中Ni离子的含量分别位于9%~17%和8%~15%范围内.这一方法或可推广至研究其它一系列顺磁掺杂氧化物的表面掺杂含量.

关键词: Ni/CeO₂, ¹⁷O, 固体核磁共振, 表面, 含量

Abstract: With Ni/CeO₂ as an example, which has important applications in catalysis, ¹⁷O solid-state nuclear magnetic resonance (NMR) spectroscopy was applied to explore and analyze the concentration of surface Ni ions, according to the changes in the ¹⁷O NMR intensity of surface oxygen ions. The results indicate that the Ni concentrations in the first and second top metal ion layers in 10% NiCe-500 and 20% NiCe-300 are within the ranges of 9%~17% and 8%~15%, respectively. This approach may be extended to study the concentration of the doped paramagnetic elements in the surface for a variety of doped oxide materials.

Key words: Ni/CeO₂, ¹⁷O, solid-state NMR, surface, concentration

中图分类号:

O482.53

王杨, 杨昌菊, 温玉洁, 陈俊超, 杜佳欢, 彭路明. 利用¹⁷O固体核磁共振波谱分析Ni/CeO₂表面镍离子含量[J]. 波谱学杂志, 2020, 37(1): 52-60.

WANG Yang, YANG Chang-ju, WEN Yu-jie, CHEN Jun-chao, DU Jia-huan, PENG Lu-ming. Analysis of the Concentrations of Surface Ni Ions in Ni/CeO₂ With ¹⁷O Solid-State NMR Spectroscopy[J]. Chinese Journal of Magnetic Resonance, 2020, 37(1): 52-60.

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利用¹⁷O固体核磁共振波谱分析Ni/CeO₂表面镍离子含量

Analysis of the Concentrations of Surface Ni Ions in Ni/CeO₂ With ¹⁷O Solid-State NMR Spectroscopy

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