Thermodynamics and statistical mechanics of ammonia in zeolite NaZSM5
B. BoddenbergLehrstuhl für Physikalische Chemie II, University of Dortmund, D-44221 Dortmund, GermanyG. U. RakhmatkarievInstitute of Chemistry, Academy of Sciences, 700170 Tashkent, UzbekistanJochen VietsLehrstuhl für Physikalische Chemie II, University of Dortmund, D-44221 Dortmund, Germany
ABI
Annotatsiya
Abstract The adsorption isotherm and the differential heat of adsorption of ammonia in zeolite NaZSM5 (Si/Al=32) were measured over a wide range of equilibrium pressure at the temperature 303 K. The obtained data can consistently be interpreted to be due to the formation of s ‐meric ( s = 1 − 6) ammonia/sodium cation complexes residing in the intersections of the straight and zig‐zag channels of the zeolite structure. The energies of formation and the potential energies of the s ‐mers are reported.
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