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A solid-state NMR study of the molecular sieve VPI–5 synthesized in the presence of a CTABr surfactant

✍ Scribed by Teresa Blasco; Joaquı́n Pérez-Pariente; Waclaw Kolodziejski

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
169 KB
Volume
8
Category
Article
ISSN
0926-2040

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✦ Synopsis

Silicon-free and silicon-rich large-pore aluminophospate VPI-5, synthesized with various contents of AlPO-H3 Ž . Ž . Ž . impurity, was studied by Bloch decay BD and cross polarization CP NMR under magic angle spinning MAS . The 1 H ™ 31 P CP peaks were considerably stronger from AlPO-H3 than from VPI-5. A detailed examination of the CP kinetics and a careful comparison of the CP and BD spectra are prerequisites for the unequivocal interpretation of 1 H ™ 31 P CP in porous aluminophosphates. q 1997 Elsevier Science B.V.

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