Lanthanum nitrate decomposition by both temperature programmed heating and citrate gel combustion |
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| Authors: | S Mentus Dijana Jelić Veselinka Grudić |
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| Institution: | (1) Faculty of Physical Chemistry, Belgrade University, Studentski trg. 16, 11000 Belgrade, Serbia;(2) Faculty of Medicine, University of Banja Luka, 78000 Banja Luka, Bosnia and Herzegovina;(3) Faculty of Metallurgy and Technology, Podgorica University, 81000 Podgorica, Montenegro |
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| Abstract: | Thermal decomposition of lanthanum nitrate to lanthanum oxide was carried out by both temperature programmed heating (TPH)
and citrate-gel combustion. The temperature programmed heating was carried out under flow of oxidizing (air), neutral (nitrogen)
and reducing (25 vol.% hydrogen+argone mixture) gases, and the processes were controlled by simultaneous thermogravimetry
and differential thermal analysis. It was shown that hydrogen atmosphere helps to reduce temperatures of all decomposition
steps. The results of TPH were utilized to check the nature of residues in the products of lanthanum nitrate-to-oxide conversion
performed via citrate-gel combustion technique. |
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| Keywords: | anhydrous lanthanum nitrate lanthanum oxide sol-gel preparation temperature programmed decomposition thermal properties |
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