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

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

Index: Solid State Nucl. Magn. Reson. 29(4) , 272-7, (2006)

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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.