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Citation: Wang Zenglin, Niu Chunji, Ma Jianfang, Ni Jiazuan. THERMAL DECOMPOSITION OF RARE EARTH COMPLEXES WITH m-NITROBENZOIC ACID[J]. Chinese Journal of Applied Chemistry, ;1993, 10(3): 28-31. shu

THERMAL DECOMPOSITION OF RARE EARTH COMPLEXES WITH m-NITROBENZOIC ACID

1.
Laboratory of Rare Earth Chemistry, and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun

Received Date: 16 June 1992
Available Online: 16 November 1992

The rare earth complexes with m-nitrobenzoic acid (LnL₃·nH₂O, n=2,Ln=La-Lu and Y; n=0, Ln=Sc. HL=m-nitrobenzoic acid) were synthesized and characterized by elemental analysis and IR spectra. The mechanism of thermal decomposition of complexes were studied by means of TG-DTA and high temperature X-ray diffractometry. The activation energies and enthalpy changes of dehydration process of LnL₃·2H₂O were calculated. The phase change process of the complexes has been studied by DSC. The ultrafinity of the products of decomposition was observed.
- m-nitrobenzioc acid,
- rare earth complex,
- thermal decomposition,
- phase change
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