Investigation of cancrinite structures by powder neutron diffraction

M.T. Weller, N.J. Kenyon

Research output: Chapter or section in a book/report/conference proceedingChapter or section

8 Citations (SciVal)


Deuterated forms of cancrinite, [Na(CO).(D O)] [AlSiO] - CAN, and intermediate phase mixed disordered cancrinite-sodalite [Na (CO).(DO)] [AlSiO] - CAN/SOD, have been synthesised and studied using variable temperature, high resolution powder neutron diffraction. The structure of cancrinite shows anions are present only in the main 12-membered ring channels, with water molecules co-ordinating to sodium in the 11-hedral ε-cages. In situ, powder neutron diffraction, studies of the thermal decomposition of cancrinite and the disordered cancrinite/sodalite show marked differences in their behaviours. Both materials undergo a lattice contraction as water is lost between 100 and 300 °C though this process, and decomposition of the aluminosilicate framework, occur at significantly lower temperatures for the disordered structure.
Original languageEnglish
Title of host publicationRecent Advances in the Science and Technology of Zeolites and Related Materials, Part B
Subtitle of host publicationProceedings of the 14th International Zeolite Conference
Publication statusPublished - 2004
Event14th International Zeolite Conference - Cape Town, South Africa
Duration: 25 Apr 200430 Apr 2004

Publication series

NameStudies in Surface Science & Catalysis
NumberPart B


Conference14th International Zeolite Conference
Country/TerritorySouth Africa
CityCape Town


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