SYNTHESIS AND THERMAL-BEHAVIOR OF (NH4)(2)BE(IO3)(4)CENTER-DOT-2H(2)O

A new binary salt (NH4)(2)Be(IO3)(4) . 2H(2)O has been synthesised, an d identified by elemental analysis, X-ray powder diffraction, IR spect ra, DTA and DSC. The IR spectra show two absorption bands at 860 cm(-1 ) and 460 cm(-1). The new compound showed thermal stability up to 160 degrees C. A diagram of the thermal decomposition was offered by ident ifying the intermediate product. The kinetic parameters (E and A) wer e investigated on the basis of the TG data, and the kinetic equations were determined. It was proved that the process takes place in the kin etic region. Copyright (C) 1996 Published by Elsevier Science Ltd