Decomposition study of Ni–La–Mg–O precursors using thermal analysis

• Published in: Journal of thermal analysis and calorimetry Vol. 100; no. 1; pp. 83 - 87
• Main Authors: Santana Lima, Robson, dos Santos, Arnaud Victor, Vargas Pereira, Fabiano, Oliveira da Guarda Souza, Marluce
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-04-2010; Springer
• Subjects: Analysis; Analytical Chemistry; Carbonates; Catalysis; Catalysts: preparations and properties; Chemistry; Chemistry and Materials Science; Decomposition; Exact sciences and technology; General and physical chemistry; Inorganic Chemistry; Magnesium; Magnesium compounds; Magnesium oxide; Measurement Science and Instrumentation; Nickel; Nitrates; Physical Chemistry; Polymer Sciences; Precursors; Rare earth metals; Spectra; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Thermal analysis; Thermal decomposition; Thermal decomposition; Lanthanum and magnesium oxide; Catalyst preparation; Pyrolysis; Fourier transformation; Support; Lanthanum Oxides; Transition metal; Decomposition; Precursor; Infrared spectrometry; Preparation; Nickel; Thermal analysis; Magnesium Oxides; Catalyst
• ISSN: 1388-6150; 1588-2926; 1572-8943
• DOI: 10.1007/s10973-009-0641-z

The thermal decomposition process of La
2
O
3
/MgO (La/Mg = 2, 1 and 0.5) supported nickel (15% mass/mass Ni) precursor was investigated. Thermal analysis results show distinct processes of decomposition of the samples in accordance with the composition. The mass loss at higher temperature is associated to distinct stages of decomposition of lanthanum precursors. The thermal analysis results agree with the FTIR spectra showing change in the band corresponding to carbonates and nitrates species. XRD results also confirmed the precursor’s decomposition. It can be concluded that the thermal decomposition of La
2
O
3
–MgO-nickel precursor depends on the La/Mg ratio and of the residual species.