@article {3337,
	title = {STRUCTURAL INVESTIGATIONS OF SAPO-37 MOLECULAR-SIEVE BY COHERENCE-TRANSFER AND DIPOLAR-DEPHASING SOLID-STATE NUCLEAR-MAGNETIC-RESONANCE EXPERIMENTS},
	journal = {Microporous Materials},
	volume = {5},
	number = {1-2},
	year = {1995},
	note = {ISI Document Delivery No.: TD675Times Cited: 16Cited Reference Count: 21},
	month = {Oct},
	pages = {29-37},
	type = {Article},
	abstract = {In this work, dipolar-based coherence-transfer and dipolar-dephasing solid-state nuclear magnetic resonance (NMR) experiments were performed to investigate the structure of the silicoaluminophosphate molecular sieve SAPO-37. The Al-27,Si-29 transferred-echo double-resonance (TEDOR) experiment directly proves, for the first time, that silicon substitutes for phosphorus atoms in the framework via the SM2 mechanism. The Al-27 (P-31) and Al-27 (Si-29) dipolar-dephasing difference experiments and the two-dimensional Al-27{\textendash}>P-31 TEDOR experiment indicate the presence of three types of aluminum environments: tetrahedral Al surrounded by symmetrical [4P] or [4Si] environments which give rise to a sharp resonance, tetrahedral Al surrounded by asymmetrical [3P, Si], [2P, 2Si] or [P, 3Si] environments which give rise to a broad resonance, and also extra-framework amorphous octahedral Al.},
	keywords = {AL-27, COHERENCE-TRANSFER, DIPOLAR-DEPHASING, NMR, QUADRUPOLAR, SAPO-37 MOLECULAR SIEVE, SILICOALUMINOPHOSPHATE, TRANSFERRED-ECHO DOUBLE-RESONANCE, VPI-5},
	isbn = {0927-6513},
	url = {<Go to ISI>://A1995TD67500004},
	author = {Fyfe, C. A. and Wongmoon, K. C. and Huang, Y. and Grondey, H.}
}
