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Ingress of water into zeolite 4A powder plugs

By B. Leone, M.R. Halse, John H. Strange, A.R. Lonergan, P.J. McDonald and E. Smith


One dimensional profiles of the concentration of water absorbed from vapour diffusing into compacted type 4A zeolite powder have been obtained by broadline NMR imaging. After an induction period of similar to 6 h, a region of full hydration advances linearly with time into the zeolite plug. This behaviour is typical of Case H diffusion. A simple numerical simulation gives good agreement with the experimental results

Topics: R
Year: 1994
DOI identifier: 10.1016/0730-725x(94)91528-8
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