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Synthesis and characterization of nano-sized α-alumina powder from kaolin by acid leaching process
Abstractα- alumina powder with particle size <100nm and spherical shape was prepared from calcined kaolin by acid leaching method. Here hydrochloric acid was used as a leaching agent. The amorphous white powders formed after precipitation, washing and drying were characterised by the different technique like XRD, TG-DSC and FTIR. Particle size distribution, specific surface area and microstructural analysis of the 1200°C calcined powder were also carried out to ascertain the size, shape and distribution of the particles. The phase pure α-alumina with a size range <100nm, was formed at 1200°C. The presence of a surfactant during processing also exhibited a positive effect on modification of particle size.
HighlightsExtraction of α-alumina from kaolin is carried out.The particle size is in the range of <100nm.Pure phase α-alumina formed at 1200°C.The process followed is a simple and economic.Particle size modification is possible by using PEG.
Synthesis and characterization of nano-sized α-alumina powder from kaolin by acid leaching process
Abstractα- alumina powder with particle size <100nm and spherical shape was prepared from calcined kaolin by acid leaching method. Here hydrochloric acid was used as a leaching agent. The amorphous white powders formed after precipitation, washing and drying were characterised by the different technique like XRD, TG-DSC and FTIR. Particle size distribution, specific surface area and microstructural analysis of the 1200°C calcined powder were also carried out to ascertain the size, shape and distribution of the particles. The phase pure α-alumina with a size range <100nm, was formed at 1200°C. The presence of a surfactant during processing also exhibited a positive effect on modification of particle size.
HighlightsExtraction of α-alumina from kaolin is carried out.The particle size is in the range of <100nm.Pure phase α-alumina formed at 1200°C.The process followed is a simple and economic.Particle size modification is possible by using PEG.
Synthesis and characterization of nano-sized α-alumina powder from kaolin by acid leaching process
Bhattacharyya, Sunipa (author) / Behera, Pallavi Suhasinee (author)
Applied Clay Science ; 146 ; 286-290
2017-06-18
5 pages
Article (Journal)
Electronic Resource
English
α-alumina , Kaolin , Leaching , Washing , Phase analysis , Microstructure
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