Synthesis of LaCoO3 powder by a combined mechanical/thermal process
-
Vittorio Berbenni
,
Chiara Milanese
Abstract
Lanthanum cobaltite, LaCoO3, finds applications as an oxidation and reduction catalyst in gas-sensing materials and in electrode materials for high-temperature fuel cells. The compound has been synthesized through several routes aimed at obtaining LaCoO3 at lower temperatures. We propose a synthetic procedure based on the combined use of mechanical and thermal energy on mixtures of Co(II) oxalate dehydrate and La acetate sesquihydrate. We studied the reactions taking place by increasing the temperature. The study has been performed either on mixtures prepared by a simple physical mixing of the reactants or on the same mixtures after having been subjected to mechanical activation by high-energy milling. The products formed in the mixtures by annealing at different temperatures have been characterized by means of different experimental techniques (thermogravimetric analysis, XRPD, IR, scanning electron microscopy).
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Artikel in diesem Heft
- Frontmatter
- In this Issue
- Analysis of two [2]catenanes based on electron densities from invariom refinement and results from DFT calculations
- Orthoamide und Iminiumsalze, XCVa. Umsetzungen von Orthoamiden von Alkin-Carbonsäuren mit Acetophenonen und Acetophenon-Phenylhydrazonen
- Metal-free, air-promoted, radical-mediated arylation of benzoquinone with phenylhydrazines
- Three-component condensation reaction of various aldehydes, dimedone and malononitrile catalyzed by boric acid in water in comparison with multifunctional ionic liquids as green catalytic systems
- Synthesis, characterization, and electrochemical study of a mononuclear Cu(II) complex with a 4-acyl pyrazolone ligand
- Synthesis of LaCoO3 powder by a combined mechanical/thermal process
- Preparation and molecular structures of N′-(2-heteroarylmethylidene)-3-(3-pyridyl)acrylohydrazides
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Artikel in diesem Heft
- Frontmatter
- In this Issue
- Analysis of two [2]catenanes based on electron densities from invariom refinement and results from DFT calculations
- Orthoamide und Iminiumsalze, XCVa. Umsetzungen von Orthoamiden von Alkin-Carbonsäuren mit Acetophenonen und Acetophenon-Phenylhydrazonen
- Metal-free, air-promoted, radical-mediated arylation of benzoquinone with phenylhydrazines
- Three-component condensation reaction of various aldehydes, dimedone and malononitrile catalyzed by boric acid in water in comparison with multifunctional ionic liquids as green catalytic systems
- Synthesis, characterization, and electrochemical study of a mononuclear Cu(II) complex with a 4-acyl pyrazolone ligand
- Synthesis of LaCoO3 powder by a combined mechanical/thermal process
- Preparation and molecular structures of N′-(2-heteroarylmethylidene)-3-(3-pyridyl)acrylohydrazides
- A new modification of [Ag4Br4(PPh3)4]: synthesis, structure and properties
- Magnetic and magnetocaloric properties of the coloured Heusler phases GdAg2Mg and REAgAuMg (RE=Gd, Tb, Dy)
