摘要
由强场静态^(13)C煤谱可以获得与低场魔角旋转高分辨谱相同的fa,从而避免了样品的快速旋转的要求,同时得到了高灵敏度。
The aromaticities (fa) of coals measured at high magnetic field via static ~13C CP spectra are consistent with those measured at low field by means of high resolution ~13C CPMAS. Therefore, the demand for fast sample spining was avoided while high NMR detective sensitivity was maintained at high field.
出处
《波谱学杂志》
CAS
CSCD
1991年第1期81-88,共8页
Chinese Journal of Magnetic Resonance
基金
国家自然科学基金
关键词
煤
NMR
芳香性
碳13
NMR of coals
Aromaticity of coals.
