The thermal decomposition of cerium(III) nitrate

Strydom, Christien A.; Vuuren, C.P.J. Van

doi:10.1007/bf01914558

Cited by 51 publications

(20 citation statements)

References 4 publications

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“…In fact, the corresponding weight losses at the inflection points in the weight curve at about 160 and 220°C are about 12% and 26% which are quite close to the stoichiometric values for subtracting three and six water molecules from the starting hydrated salt. This is in agreement with Strydom and van Vuuren [36]. Decomposition of the anhydrous salt starts above 220°C and at 266°C a sharp weight loss occurs that is attributed to the formation of CeO 2 , as it is also evident from the total weight loss of 60.3% achieved at about 400°C which essentially corresponds to the stoichiometric conversion to the oxide (i.e., 60.4%).…”

Section: Resultssupporting

confidence: 85%

Fabrication of ceramic electrolytic films by the method of solution aerosol thermolysis (SAT) for solid oxide fuel cells (SOFC)

Papastergiades¹,

Argyropoulos²,

Rigakis³

et al. 2009

Ionics

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The technique of solution aerosol thermolysis (SAT) for the production of ceramic electrolytic films suitable for solid oxide fuels cells was investigated. The research has focused on the optimization of process parameters and characterization of the obtained films by means of X-ray diffractometry and scanning electron microscopy/energy-dispersive spectroscopy. Dense films of gadolinia-stabilized ceria of uniform thickness have been successfully produced on substrates consisting of dense disks of yttria-stabilized zirconia by SAT using nitrate salts of the precursors dissolved in an ethanol-water solvent. Substrate temperature is an important parameter and in this system the best initial values identified were of the order of 400-420°C. The interplay between initial substrate temperature, solution flow rate, and postdeposition temperature is important for a good-quality film.

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Section: Resultssupporting

confidence: 85%

Fabrication of ceramic electrolytic films by the method of solution aerosol thermolysis (SAT) for solid oxide fuel cells (SOFC)

Papastergiades¹,

Argyropoulos²,

Rigakis³

et al. 2009

Ionics

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“…According to the obtained data (Fig. 1a), the decomposition of bulk Ce(NO 3 ) 3 ·6H 2 O proceeds through several steps including the two-stage dehydration process, the formation of anhydrous cerium nitrate and its transformation during which the oxidation of Ce(III) by the nitrate ion with the formation of CeO 2 occurs [41]. The three weight losses are observed at T DTG = 95, 195 and 240 °C, accompanied by pronounced endothermal effects.…”

Section: Resultsmentioning

confidence: 78%

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

Матус¹,

Khitsova²,

Ефимова³

et al. 2019

Eurasian Chem. Tech. J.

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To develop new catalysts based on carbon nanomaterials with supported metal oxide nanoparticles for oxidative transformations of sulfur compounds, a series of metal oxide nanoparticle-decorated carbon nanotubes (MOx/CNTs) were prepared by incipient wetness impregnation at a variation of the active metal type (M = Ce, Mo, Cu). The thermal decomposition of bulk and CNT supported metal precursors used in the preparation of MOx/CNTs was analyzed under inert atmosphere employing several thermoanalytical techniques (thermogravimetry, differential thermogravimetry and differential scanning calorimetry) coupled with mass spectrometry. The thermolysis parameters of the bulk and supported metal precursors were compared and the effect of CNT support on the decomposition pattern of compounds was elucidated. It was established that the decomposition of metal precursors supported on CNTs was started and completed at temperatures of 15‒25 and 25‒70 °C lower, respectively, compared with the bulk active metal precursor. The enhancement of CNT support stability against thermal degradation is observed in the following row of metal cations: Ce < Cu < Мо < pristine and metal anions of precursor: nitrate < chloride < sulfate. The optimal mode of thermal treatment of catalyst and appropriate active metal precursors were selected for advanced synthesis of nanosized MOx/CNT catalyst.

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“…The heat treatment step was necessary not only to improve crystallinity but also to fully decompose the nitrate precursors and to remove any residual moisture in the nanopowders after heat treatment A. The decomposition temperatures of cerium nitrate hexahydrate and praseodymium nitrate hexahydrate are 280°C [25] and 465°C [26], respectively. Also, since the maximum drying temperature in the spray dryer was kept at 350°C to avoid degradation of its glass construction, heat treatment B was essential to complete precursor decomposition to oxide.…”

Section: Resultsmentioning

confidence: 99%

A spray drying system for synthesis of rare-earth doped cerium oxide nanoparticles

Sharma

Eberhardt

Sharma

et al. 2010

Chemical Physics Letters

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The thermal decomposition of cerium(III) nitrate

Cited by 51 publications

References 4 publications

Fabrication of ceramic electrolytic films by the method of solution aerosol thermolysis (SAT) for solid oxide fuel cells (SOFC)

Fabrication of ceramic electrolytic films by the method of solution aerosol thermolysis (SAT) for solid oxide fuel cells (SOFC)

Preparation of Carbon Nanotubes with Supported Metal Oxide Nanoparticles: Effect of Metal Precursor on Thermal Decomposition Behavior of the Materials

A spray drying system for synthesis of rare-earth doped cerium oxide nanoparticles

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