Authors:
M. Ji Northwest University, Xian Department of Chemistry 710069 Shaanxi P. R. China 710069 Shaanxi P. R. China

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J. Liu Northwest University, Xian Department of Chemistry 710069 Shaanxi P. R. China 710069 Shaanxi P. R. China

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S. Gao Northwest University, Xian Department of Chemistry 710069 Shaanxi P. R. China 710069 Shaanxi P. R. China

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R. Hu Xian Modern Chemistry Research Institute, Xian 710065 Shaanxi P. R. China 710065 Shaanxi P. R. China

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Q. Shi Northwest University, Xian Department of Chemistry 710069 Shaanxi P. R. China 710069 Shaanxi P. R. China

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Abstract  

The thermal decomposition behaviour of the complexes of rare earth metals with histidine: RE(His)(NO3)3H2O (RE=La—Nd, Sm—Lu and Y; His=histidine) was investigated by means of TG-DTG techniques. The results indicated that the thermal decomposition processes of the complexes can be divided into three steps. The first step is the loss of crystal water molecules or part of the histidine molecules from the complexes. The second step is the formation of alkaline salts or mixtures of nitrates with alkaline salts after the histidine has been completely lost from the complexes. The third step is the formation of oxides or mixtures of oxides with alkaline salts. The results relating to the three steps indicate that the stabilities of the complexes increase from La to Lu.

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
1
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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