The kinetics and mechanism of the high temperature solid state reactions of kaolinite minerals
dc.contributor.author | MacKenzie, Kenneth John Dallas | |
dc.date.accessioned | 2011-03-10T23:00:34Z | |
dc.date.accessioned | 2022-10-25T05:13:47Z | |
dc.date.available | 2011-03-10T23:00:34Z | |
dc.date.available | 2022-10-25T05:13:47Z | |
dc.date.copyright | 1965 | |
dc.date.issued | 1965 | |
dc.description.abstract | This thesis describes a kinetic study of the solid state reactions of kaolinite minerals at high temperatures. These reactions can be represented by the idealized equations: The formation of mullite and cristobalite from metakaolinite has been studied in the temperature range 1060°C - 1220°C using several different but well characterized starting materials. A method of X-ray analysis for mullite has bean developed for following the reaction. The experimental data, which suggest that the mechanism is independent of the starting materials, have been compared with several theoretical models for nucleation and diffusion processes. The data up to 90% conversion of mullite can be explained satisfactorily by exponential nucleation followed by rapid crystal growth. Rate constants for the reactions of kaolinite, halloysite, and copper halloysite have been determined. The corresponding enthalpies of activation (87-96 K cal. mole.-1), free energies of activation (108-130 K cal. mole.-1) and entropies of activation (-15.3- -28.8 cal. deg.-1 mole.-1) are independent of the starting materials. | en_NZ |
dc.format | en_NZ | |
dc.identifier.uri | https://ir.wgtn.ac.nz/handle/123456789/23259 | |
dc.language | en_NZ | |
dc.language.iso | en_NZ | |
dc.publisher | Te Herenga Waka—Victoria University of Wellington | en_NZ |
dc.rights.holder | All rights, except those explicitly waived, are held by the Author | en_NZ |
dc.rights.license | Author Retains Copyright | en_NZ |
dc.rights.uri | https://www.wgtn.ac.nz/library/about-us/policies-and-strategies/copyright-for-the-researcharchive | |
dc.subject | Kadinite | en_NZ |
dc.subject | Chemical kinetics | en_NZ |
dc.subject | Chemical reactions | en_NZ |
dc.title | The kinetics and mechanism of the high temperature solid state reactions of kaolinite minerals | en_NZ |
dc.type | Text | en_NZ |
thesis.degree.discipline | Chemistry | en_NZ |
thesis.degree.grantor | Te Herenga Waka—Victoria University of Wellington | en_NZ |
thesis.degree.level | Masters | en_NZ |
thesis.degree.name | Master of Science | en_NZ |
vuwschema.type.vuw | Awarded Research Masters Thesis | en_NZ |
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