Proton magic angle spinning nuclear magnetic resonance and temperature programmed desorption studies of ammonia on the acidity of the framework hydroxyl groups in the zeolite H-ZSM-5 and in H-boraliteK. F. M. G. J. Scholle, G. P. M. Van der Velden, Arno P. M. Kentgens et al.|The Journal of Physical Chemistry|1984Cited by 88