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Structure and phase transformations in the titanosilicate, sitinakite. The importance of water
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Thorogood, Gordon J., Kennedy, Brendan J., Griffith, Christopher S., Elcombe, Maragaret M., Avdeev, Maxim, Hanna, John V., Thorogood, Samantha K. and Luca, Vittorio (2010) Structure and phase transformations in the titanosilicate, sitinakite. The importance of water. Chemistry of Materials, Vol.22 (No.14). pp. 4222-4231. doi:10.1021/cm100727h ISSN 0897-4756.
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Official URL: http://dx.doi.org/10.1021/cm100727h
Abstract
Synchrotron X-ray diffraction and neutron diffraction have been used to investigate the phase changes that the titanosilicate mineral sitinakite undergoes when dehydrated. Refinements of the powder diffraction data of the material before and after heating to 573K indicate a phase change from space group P4(2)/mcm to P4(2)/mbc. Upon exposure to normal atmospheric conditions for an extended period the material transforms back to P4(2)/mcm with a reduced lattice parameter. If the material is heated in a sealed capillary, it is possible to get the two phases coexisting. The coexistence of these two phases in sealed system suggests that it is only the loss of H2O that is driving the reversible phase transformation.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Chemistry of Materials | ||||
Publisher: | American Chemical Society | ||||
ISSN: | 0897-4756 | ||||
Official Date: | 27 July 2010 | ||||
Dates: |
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Volume: | Vol.22 | ||||
Number: | No.14 | ||||
Number of Pages: | 10 | ||||
Page Range: | pp. 4222-4231 | ||||
DOI: | 10.1021/cm100727h | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Funder: | Australian Synchrotron Research Program, Commonwealth of Australia |
Data sourced from Thomson Reuters' Web of Knowledge
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