S. Dzwigaj et al., PROBING DIFFERENT KINDS OF VANADIUM SPECIES IN THE VSI-BETA ZEOLITE BY DIFFUSE-REFLECTANCE UV-VISIBLE AND PHOTOLUMINESCENCE SPECTROSCOPIES, JOURNAL OF PHYSICAL CHEMISTRY B, 102(33), 1998, pp. 6309-6312
The presence of different vanadium species in VSi beta zeolite is evid
enced by diffuse reflectance UV-visible and photoluminescence spectros
copies, but only the latter is able to clearly distinguish three kinds
of tetracoordinated vanadium sites and to reveal the effects of V loa
ding and dehydration-hydration processes on the environment of the V s
pecies.