29Si n.m.r. longitudinal relaxation times in ZSM-5 zeolites

Authors:
  • LVLeo J. M. van de Ven
    Leo J. M. van de Ven
  • JPJos G. Post
    Jos G. Post
  • JHJan H. C. van Hooff
    Jan H. C. van Hooff
  • JHJan W. de Haan
    Jan W. de Haan
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Abstract
The presence of Pr4N+ templates causes an increase of Tl for 29Si nuclei in ZSM-5 zeolites of more than one order of magnitude, and relatively small changes in zeolite structure are important; due care is required in extracting quantitative data from 29Si magic angle spinning n.m.r. spectra of zeolites.