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1986 - 1982
 

 

J. Kutscher, H. Pfeifer, M. Hunger, J. Hellebrand,
Investigation of imbibed water in wheat grains by pulsed 1H NMR, Exp. Techn. Phys. 34 1986 113-122.


D. Freude, M. Hunger, H. Pfeifer, W. Schwieger,
1H MAS NMR studies on the acidity of zeolites, Chem. Phys. Lett. 128 1986 62-66


H. Pfeifer, D. Freude, M. Hunger,
Nuclear magnetic resonance studies on the acidity of zeolites and related catalysts, Zeolites 5 1985 274-286.


D. Freude, M. Hunger, H. Pfeifer, G. Scheler, J. Hoffmann, W. Schmitz,
Highly resolved proton magnetic resonance spectra of hydrogen-zeolites, Chem. Phys. Lett. 105 1984 427-430.


M. Hunger, D. Freude, H. Pfeifer, H. Bremer, M. Jank, K.-P. Wendlandt,
High-resolution proton magnetic resonance and catalytic studies concerning Brønsted centers of amorphous Al2O3-SiO2 solids, Chem. Phys. Lett. 100 1983 29-33.


D. Freude, T. Froehlich, M. Hunger, H. Pfeifer, G. Scheler,
NMR studies concerning the dehydroxylation of zeolites HY, Chem. Phys. Lett. 98 1983 263-266.


D. Freude, M. Hunger, H. Pfeifer,
Study of Brønsted acidity of zeolites using high-resolution proton magnetic resonance with magic-angle spinning, Chem. Phys. Lett. 91 1982 307-310.