title: Spectral editing based on selective excitation and Lee-Goldburg cross-polarization under magic angle spinning.
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.
authors.affiliation: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan.
authors.forename: Shing-Jong
authors.initials: SJ
authors.lastname: Huang
authors.forename: Yao-Hung
authors.initials: YH
authors.lastname: Tseng
authors.forename: Yun
authors.initials: Y
authors.lastname: Mou
authors.forename: Shang-Bin
authors.initials: SB
authors.lastname: Liu
authors.forename: Shih-Hao
authors.initials: SH
authors.lastname: Huang
authors.forename: Chun-Pin
authors.initials: CP
authors.lastname: Lin
authors.forename: Jerry C C
authors.initials: JC
authors.lastname: Chan
mesh_terms: D000465:Algorithms; D003497:Cyclic N-Oxides / Q000032:analysis*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008903:Minerals / Q000032:analysis*; D011522:Protons; D012815:Signal Processing, Computer-Assisted; D013057:Spectrum Analysis / Q000379:methods*; D013113:Spin Labels
chemical_list: D003497:Cyclic N-Oxides; D008903:Minerals; D011522:Protons; D013113:Spin Labels; C051831:3,3,5,5-tetramethyl-1-pyrroline N-oxide