0000000000133640

AUTHOR

B. Xin

showing 3 related works from this author

Continuous hydrothermal synthesis of nanometric BaZrO3 in supercritical water

2007

Abstract Nanocrystalline barium zirconate (BaZrO 3 ) was synthesized using a hydrothermal synthesis process working in supercritical conditions and in a continuous way. By this method, we succeeded in the continuous and rapid production of nanopowders. As a preliminary work three barium precursors have been investigated: barium hydroxide (Ba(OH) 2 ), barium acetate (Ba(CH 3 COO) 2 ) and barium nitrate (Ba(NO 3 ) 2 ). Two of them (Ba(CH 3 COO) 2 and Ba(NO 3 ) 2 ) led to the pure perovskite phase. Then an experimental design has been conducted in order to determine the influence of the experimental parameters on the crystallinity and the grain size of the final product.

Materials scienceInorganic chemistrychemistry.chemical_element02 engineering and technology010402 general chemistry01 natural sciencesBarium hydroxideInorganic Chemistrychemistry.chemical_compoundCrystallinityMaterials ChemistryHydrothermal synthesisPhysical and Theoretical ChemistryComputingMilieux_MISCELLANEOUSPerovskite (structure)Barium acetateBarium[CHIM.MATE]Chemical Sciences/Material chemistryPowders-chemical preparation021001 nanoscience & nanotechnologyCondensed Matter PhysicsSupercritical fluidGrain size0104 chemical sciencesElectronic Optical and Magnetic MaterialsSupercritical water synthesischemistryChemical engineering[ CHIM.MATE ] Chemical Sciences/Material chemistryCeramics and CompositesBarium nitrate0210 nano-technologyBaZrO3
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Hydrothermal synthesis of nanostructured inorganic powders by a continuous process under supercritical conditions

2005

Abstract In this study, using a prototype of hydrothermal synthesis in subcritical and supercritical water working in a continuous way, nanometric ceramic precursors with perfectly defined composition are produced: spinel ferrites such as Fe2CoO4, TiO2 with anatase structure and also perovskite structures such as BaZrO3. The as-prepared powders are fully characterized by complementary experiments: X-ray diffraction, electron microscopies, EDX spectrometry, surface area measurement, etc. Thus, particles size, morphology, aggregation state, crystal structure, composition are investigated. Moreover, magnetic properties of the ferrites products are studied. The powders obtained are pure phases …

AnataseMaterials scienceSpinelMineralogyengineering.materialSupercritical fluidGrain sizeChemical engineeringvisual_artX-ray crystallographyMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumengineeringHydrothermal synthesisCeramicPerovskite (structure)Journal of the European Ceramic Society
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ChemInform Abstract: Continuous Hydrothermal Synthesis of Nanometric BaZrO3in Supercritical Water.

2008

Abstract Nanocrystalline barium zirconate (BaZrO 3 ) was synthesized using a hydrothermal synthesis process working in supercritical conditions and in a continuous way. By this method, we succeeded in the continuous and rapid production of nanopowders. As a preliminary work three barium precursors have been investigated: barium hydroxide (Ba(OH) 2 ), barium acetate (Ba(CH 3 COO) 2 ) and barium nitrate (Ba(NO 3 ) 2 ). Two of them (Ba(CH 3 COO) 2 and Ba(NO 3 ) 2 ) led to the pure perovskite phase. Then an experimental design has been conducted in order to determine the influence of the experimental parameters on the crystallinity and the grain size of the final product.

chemistry.chemical_compoundCrystallinityBarium acetatechemistryChemical engineeringHydrothermal synthesischemistry.chemical_elementBarium nitrateBariumGeneral MedicineSupercritical fluidPerovskite (structure)Barium hydroxideChemInform
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