Structural studies on thorium(IV)-titriplex IV-interacted 13X zeolite

A new zeolite derivative has been prepared by interacting Th(IV) and complexone in HCl medium and neutralising with aqueous ammonia. The amorphous and siliceous derivative showed a total mass loss of 29.25% in TG for stepwise dehydration, dehydroxylation and decomposition. Heats of reaction were 1167.6 J g^–1 at 88.7°C and 75.167 J g^–1 at 492.5°C for loss of volatile components and decomposition respectively.²⁹Si and²⁷Al MAS NMR spectra as well as XRD data of the derivative before and after calcination indicate presence of both four-coordinated and six-coordinated Al in varying ratios and the total loss of crystallinity.The author is grateful to Dr. Alan Dyer of the Department of Chemistry and Applied Chemistry, Salford University and to Dr. Jacek Klinowski of the Department of Chemistry, Cambridge University for providing the thermal data and NMR spectra respectively. He also acknowledges the comments received from Dr. N. Suryaprakash of the Sophisticated Instrument Facility, I.I.Sc., Bangalore on the²⁷Al and²⁹Si spectra of the derivatives.