The advantages and drawbacks of various techniques that utilize multiple quantum magic angle spinning (MQMAS) NMR for studying molecular sieves and related materials are reviewed. The techniques include z-filtered MQMAS with rotor synchronization, MQMAS with cross-polarization and MQMAS with REDOR. Several methods of recovering quantitative intensities in MQMAS spectra are discussed. Examples of applications include studies of various types of aluminophosphate.
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Bodart et al. (1999) studied this question.
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