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The Al coordination state of molecular sieve SAPO-37 has been studied by 27 Al multiple quantum (MQ) MAS NMR spectroscopy. Although the 1D 27 Al MAS NMR spectrum of the aluminum sites show a complex pattern, the 3Q MAS NMR spectra of SAPO-37, submitted to different treatments, lead to the detection of four different Al species in the as-synthesized sample. The comparison...
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