NMR study of Rb clusters in zeolite LTA

摘要

The features of Al-27 and Rb-87 NNIR in Rb-loaded LTA-type zeolite are discussed in comparison with K-loaded one. Broadening of Al-27 spectrum by magnetic origin is observed and the difference from the K case is pointed out for the shape of spectrum. These facts suggest that the configurations of electrons are not identical in the cases of Rb and K. For Rb-87 the mass center of the spectrum shifts clearly to higher frequency side below 10 K. The existence of Fermi contact interaction between s electron and Rb nuclei is suggested. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 19]