Using Synchrotron X-ray Scattering to Study the Diffusion of Water in a Weakly-hydrated Clay Sample(Physical and Chemical Properties of Clays,Proceedings of the 13^<th> International Clay Conference)

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概要

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• We study the diffusion of water in weakly-hydrated samples of the smectite clay Na-fluorohectorite. The quasi one-dimensional samples are dry compounds of nano-layered particles consisting of〜80 silicate platelets. Water diffuses into a sample through the mesoporosity in between the particles, and can subsequently intercalate into the adjacent particles. The samples are placed under controlled temperature. They are initially under low humidity conditions, with all particles in a 1WL intercalation state. We then impose a high humidity at one sample end, triggering water penetration along the sample length. We monitor the progression of the humidity front by monitoring the intercalation state of the particles in space and time. This is done by determining the characteristic spacing of the nano-layered particles in situ, from synchrotron wide-angle X-ray scattering measurements. The spatial width of the intercalation front is observed to be smaller than 2mm, while its velocity decreases with time, as expected from a diffusion process.

• 日本粘土学会の論文

著者

• Miranda Fonseca

  Department Of Physics Norwegian University Of Science And Technology

• MEHEUST Y.

  Department of Physics, Norwegian University of Science and Technology

• SANDNES B.

  Physics Department, University of Oslo

• LOVOLL G.

  Physics Department, University of Oslo

• MALOY K.

  Physics Department, University of Oslo

• FOSSUM J.

  Department of Physics, Norwegian University of Science and Technology

• DA SILVA

  Physics Department, University of Brasilia

• MUNDIM M.

  Physics Department, University of Brasilia

• DROPPA R.

  The Brazilian Synchrotron Laboratory (LNLS)

• Maloy K.

  Physics Department University Of Oslo

• Mundim M.

  Physics Department University Of Brasilia

• Lovoll G.

  Physics Department University Of Oslo

• Meheust Y.

  Department Of Physics Norwegian University Of Science And Technology

• Fossum J.

  Department Of Physics Norwegian University Of Science And Technology

• Sandnes B.

  Physics Department University Of Oslo

• Da Silva

  Physics Department University Of Brasilia

関連論文

• Using Synchrotron X-ray Scattering to Study the Diffusion of Water in a Weakly-hydrated Clay Sample(Physical and Chemical Properties of Clays,Proceedings of the 13^ International Clay Conference)

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