Spectral editing based on selective excitation and Lee-Goldburg cross-polarization under magic angle spinning期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Spectral editing based on selective excitation and Lee-Goldburg cross-polarization under magic angle spinning

Authors:	Huang Shing-Jong Tseng Yao-Hung Mou Yun Liu Shang-Bin Huang Shih-Hao Lin Chun-Pin Chan Jerry C C

Affiliation:	^aInstitute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan ^bDepartment of Chemistry, National Taiwan University, Taipei, Taiwan ^cGraduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan

Abstract:	We show that a Gaussian-shaped pulse can be used to excite selected ¹H signals in hydroxyapatite, monetite and H–Y zeolite loaded with trimethylphosphine oxide (TMPO). This selective excitation method can be incorporated into Lee-Goldburg (LG) cross-polarization to obtain useful spectral editing opportunity. This new strategy has been applied to identify the Brønsted and the Lewis acid sites in H–Y zeolite using TMPO as the probe molecule.

Keywords:	MAS Solid-state NMR Lee-Goldburg Zeolite HY TMPO LG-CP
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