Abstract

AbstractThe growth phenomena, mechanism, and kinetics of naphthalene crystal from supercritical CO2 solution were studies by using a single‐crystal technique. Distinct growth features were observed, including the development of individuals from the seeds and the sprouting of plates from the individuals. The surface integration proceeded by two‐dimensional nucleation mechanism at face corners and by subsequent spreading of the nuclei. The measured growth rates as functions of supersaturation and solubility were consistent with the derived growth‐rate equations, based on the corner nucleation mechanism. In comparison with crystal growth from conventional media, the growth of naphthalene crystals from supercritical CO2 solution is similar to liquid‐solution growth as far as growth mechanism and kinetics are concerned.

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