HONG, SB SHIN, EW MOON, SH PYUN, CH KIM, CH UH, YS 2024-01-21T20:36:39Z 2024-01-21T20:36:39Z 2021-09-02 1995-08-10 0022-3654 https://pubs.kist.re.kr/handle/201004/145015 It is observed from the luminescence measurements that the intrazeolitic migration of Tb(III) ions arising from thermal treatments in FAU-type zeolites is strongly dependent on the framework Si/Al ratio. For a low-silica FAU zeolite (Si/Al = 1.37) most of the Tb(III) ions exchanged into supercages begin to migrate directly to hexagonal prisms at 423 K without staying at sodalite cages; by contrast, the cations in a high-silica FAU zeolite (Si/Al = 3.40) migrate first to sodalite cages at 373 K and in turn to hexagonal prisms at temperatures higher than 373 K. English AMER CHEMICAL SOC EXCHANGED Y-ZEOLITES RARE-EARTH CATION DISTRIBUTION NMR FRAMEWORK SPECTRA METAL LUMINESCENCE STUDIES ON INTRAZEOLITIC MIGRATION OF TB(III) IONS BY THERMAL TREATMENTS .1. FAU-TYPE ZEOLITES Article 10.1021/j100032a033 1 JOURNAL OF PHYSICAL CHEMISTRY, v.99, no.32, pp.12274 - 12277 JOURNAL OF PHYSICAL CHEMISTRY 99 32 12274 12277 scie scopus A1995RN70600033 2-s2.0-33751155067 Chemistry, Physical Chemistry Article EXCHANGED Y-ZEOLITES RARE-EARTH CATION DISTRIBUTION NMR FRAMEWORK SPECTRA METAL