Co-Ti-O complex oxides: Hydrothermal synthesis, phase characterization, color analysis and catalytic Activity assessment
The hydrothermal synthesis of Co-Ti-O complex oxide nanoparticles the reaction between TiO2 and Co(NO3)2.6H2O using the stoichiometric ratio to yield Co2TiO4 and NaOH as mineralizer have been investigated. The particles were characterized by powder X-ray diffraction, selected area electron diffracti...
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| Main Authors: | , , , |
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| Language: | English |
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Science Faculty of Chiang Mai University
2019
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| Subjects: | |
| Online Access: | http://it.science.cmu.ac.th/ejournal/dl.php?journal_id=6240 http://cmuir.cmu.ac.th/jspui/handle/6653943832/66157 |
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| Institution: | Chiang Mai University |
| Language: | English |
| Summary: | The hydrothermal synthesis of Co-Ti-O complex oxide nanoparticles the reaction between TiO2 and Co(NO3)2.6H2O using the stoichiometric ratio to yield Co2TiO4 and NaOH as mineralizer have been investigated. The particles were characterized by powder X-ray diffraction, selected area electron diffraction, scanning electron and transmission electron microscopies, UV-Vis, infrared and Raman spectroscopies, X-ray absorption near-edge spectroscopy, thermogravimetric analysis and gas sorption measurements. Evidences on the pathogenic formation of Co3O4 and CoTiO3 are illustrated, and the unlikely in yielding a single phase of Co2TiO4 is revealed. Detailed phase characterization is discussed. The particles showed a dark bluish green color, two different morphologies of rhombus and needle shape with a mean particle size of 150 nm, a remarkably narrow pore size distribution below 75 Å, and type II gas sorption behavior. An excellent performance as a catalyst toward the Fischer-Tropsch synthesis with 35% of CO conversion and a high selectivity toward the C10, has been revealed. |
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