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Nucleation of Supramolecular Crystals in Suspensions of Monodispersed Spherical Silica Particles During Sedimentation

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Abstract

Growth of supramolecular crystals (SC) was studied during sedimentation in suspensions of monodisperse spherical silica particles (MSSP). The number of growth centers was found to decrease depending on the deionization of the dispersion. The process is accompanied by the corresponding enlargement of the crystals. The volume and surface components of the Gibbs energy of nucleation do not determine the probability of nucleation. The energy of electrostatic repulsion of ions covering structural units (SU), which exceeds the MSSP molecular gravitation, was the only parameter found to correlate with the number of crystallization centers.

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Authors and Affiliations

  1. Institute of Mineralogy and Petrography, Novosibirsk, 630090, Russia

    D.V. Kalinin & V. V. Serdobintseva

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  1. D.V. Kalinin
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  2. V. V. Serdobintseva
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Kalinin, D., Serdobintseva, V.V. Nucleation of Supramolecular Crystals in Suspensions of Monodispersed Spherical Silica Particles During Sedimentation. Reaction Kinetics and Catalysis Letters 73, 71–75 (2001). https://doi.org/10.1023/A:1013920820742

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  • DOI: https://doi.org/10.1023/A:1013920820742

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