JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
RATE OF COMPOSITION CHANGES OF ORGANIC SOLID SOLUTION CRYSTALS IN SWEATING OPERATIONS
MASAKUNI MATSUOKAAKIRA SUMITANI
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1988 年 21 巻 1 号 p. 6-10

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When crystalline particles of binary solid solution mixtures of the m-chloronitrobenzene-m-fluoronitrobenzene system were placed in an atmosphere at elevated temperatures close to their equilibrium liquidus point (sweating), they gradually changed their compositions to approach the equilibrium solidus composition and also changed shape from rigid plates to porous ones. These changes continued even after 360 h, which is significantly different from the behavior observed for simple eutectic systems reported in a previous study. Quantitative analysis of the rates of composition changes were made on the basis of the diffusion mechanism of the recrystallization process during sweating.
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© The Society of Chemical Engineers, Japan
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