Title of article :
Thermal deamination kinetics of the nickel-containing chabazite-like aluminophosphate, Ni(NH2–CH2–CH2–NH2)2(AlPO4)6(OH)2, deposition of nanocrystalline NiO particles
Author/Authors :
Nevenka Rajic، نويسنده , , Djordje Stojakovic، نويسنده , , Aleksander Recnik، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2009
Pages :
5
From page :
5139
To page :
5143
Abstract :
Thermogravimetrical analysis has been used to study the kinetics of thermal deamination of bis(ethylenediamine)nickel(II)-containing aluminophosphate (Ni–CHA) which is a precursor of nickel(II)-containing chabazite-like AlPO4-34. The deamination occurs as a single–step kinetic process which is best described by the contracting cylinder model. The obtained activation energy of 200 kJ/mol is mainly a reflection of the strong Ni–N coordination bond. The thermal decomposition of Ni–CHA results in the deposition of crystalline NiO particles homogeneously dispersed in the AlPO4-34 lattice. Average particle size was found to be about 5 nm. The study confirms that the thermal decomposition of amine complexes of Ni(II) encapsulated inside the microporous aluminophosphate host can be a suitable method for obtaining fine nano-oxide particles.
Keywords :
AlPO4-34 , Chabazite-like , TEM , Nano-oxide , Decomposition kinetics
Journal title :
INORGANICA CHIMICA ACTA
Serial Year :
2009
Journal title :
INORGANICA CHIMICA ACTA
Record number :
1327939
Link To Document :
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