Purification of Na-smectite and preparation of oriented samples for diffusion experiments

Sato, Haruo

Purification of Na-smectite and preparation of plated-oriented samples (membranous samples) were carried out, and a compacted smectite sample for diffusion experiment, of which orientation of smactite particles and interlayernaperture were controlled, was manufactured for trial. It was identified that the purified Na-smectite is approximately a homogeneously arranged Na-smectite from XRD measurements for oriented and powder samples. A compacted smectite sample for diffusion experiment, of which orientation of smectite particles and interlayer aperture were controlled, was manufactured for trial. Consequently, a compacted smectite sample with a dry density of about 1.8 Mg/m and with only 2 water layers of interlayer aperture could be successfully manufactured for trial.