Publication
Two-dimensional (2D) exchange NMR is a powerful tool for measuring the dynamics and energetics of adsorbed xenon atoms undergoing slow exchange between the alpha-cages of Na-A zeolite. In this proceedings, we present recently published results, as well as additional discussion and data obtained, using 2D Xe-129 NMR to determine rate coefficients for intercage xenon hopping and to correlate them with adsorption and activation energies. Variable-temperature experiments establish the activation energy for hopping between alpha-cages to be 60+/-10 kJ/mol. The dependence of these kinetic and thermodynamic quantities on xenon occupancy of the alpha-cages reflects the importance of intracage interactions on the behavior of the adsorbed guest molecules.
Nicola Marzari, Tommaso Chiarotti, Andrea Ferretti
Aleksandra Radenovic, Mukeshchand Thakur, Andrey Chernev, Vasily Artemov, Lucie Navratilova, Nianduo Cai, Yunfei Teng, Tzu-Heng Chen