Distillation as a Tool for Purification of Research Quantities of Material

Leslie, R.T.

doi:10.1111/j.1749-6632.1966.tb49739.x

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1967

1975

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“…The application of the foregoing intensive properties requirement for single beads Is also suitable for determining the homogeneity of derivative ion exchange resins. As published elsewhere [3], we have found that a variety of resin samples exhibit marked variations in the swelling ratio and in the concentration of exchange sites C (meq/ml) as measured with tracers on individual particles. Figure 5 shows the variation of these quantities for a heterogeneous sample of ion exchange resin and figure 6 shows the intensive behavior that, though Infrequent, has at least been observed.…”

Section: Ch=ch2supporting

confidence: 64%

Separation and purification section:

Freeman¹

1967

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A research capability for the study and refined adaptation of ion exchange materials is described. There are new activities reported for the areas of extreme purification, chemical reagents, organic chemicals, including the use of crystallization for the achievement, protection, and measurement of chemical purity. Specific studies have been conducted in the purification of mineral acids, nitrobenzene, and the development of zone refining methods.

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Section: Ch=ch2supporting

confidence: 64%