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    The effect of processing parameters on particle size in ammonia-induced precipitation of zirconyl chloride under industrially relevant conditions

    116370_The_effect_of_processing_parameters_on_particle_size.pdf (792.9Kb)
    Access Status
    Open access
    Authors
    Carter, Geoffrey
    Hart, Robert
    Rowles, M
    Buckley, Craig
    Ogden, Mark
    Date
    2009
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Carter, Geoffrey and Hart, Robert and Rowles, M. and Buckley, Craig and Ogden, Mark. 2009. The effect of processing parameters on particle size in ammonia-induced precipitation of zirconyl chloride under industrially relevant conditions. Powder Technology. 191 (1-2): pp. 218-226.
    Source Title
    Powder Technology
    DOI
    10.1016/j.powtec.2008.10.021
    ISSN
    00325910
    Faculty
    Department of Applied Chemistry
    Science and Engineering
    Remarks

    Copyright © 2009 Elsevier B.V. All rights reserved.

    The link to the Journal's website is available at: http://www.sciencedirect.com/science/journal/00325910

    URI
    http://hdl.handle.net/20.500.11937/30419
    Collection
    • Curtin Research Publications
    Abstract

    The effect of pH of precipitation, starting solution concentration, and agitation levels on the particle size of hydrous zirconia precipitates have been investigated. It was found that all three variables affect the particle size of the hydrous zirconia. The smallest particle size is produced by a 0.81 M starting solution, precipitated at pH 12 with a high agitation level. The pH of precipitation was also found to have a significant impact on the type of hydrous zirconia produced. TGA/DTA, micro combustion and TEM / EDS were used to investigate the difference in the powders produced at pH 3 and 12. This work suggests that powders produced at pH 3 will have a structure similar to Zr[OH]4 whilst those at pH 12 are more likely ZrO[OH]2. XRD and micro-combustion suggest that the powders produced at pH 3 retained ammonium chloride whilst those produced at pH 12 did not. The filtration rates for the pH 3 product were significantly faster than that of the powders made at pH 12 which is significant in the industrial production of these materials.

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