Measuring secondary nucleation through single crystal seeding

Maria L. Briuglia, Jan Sefcik, Joop H. ter Horst

Research output: Contribution to journalArticle

Abstract

This article presents a novel assessment method for secondary nucleation rates using a well-controlled, small scale seeding procedure. The procedure comprises the seeding of a well-monitored, stirred, supersaturated solution by a carefully selected single crystal under conditions at which spontaneous nucleation does not occur. The determined number of particles in time were translated to a suspension density using a calibration performed with monodisperse polymer spheres. The increasing crystal suspension density in time subsequently allowed the determination of the secondary nucleation rate under very specific conditions of supersaturation and temperature. The secondary nucleation rate was measured as a function of seed crystal size and supersaturation. It was observed that the time elapsed between the moment a single seed crystal is added and the moment the suspension density started to increase is larger when the seeded crystals are smaller and the supersaturation is lower. A systematic study of secondary nucleation at different supersaturations led to the determination of a supersaturation threshold for secondary nucleation, which could be used in industrial crystallization process design to identify process conditions with the right secondary nucleation rate behavior.

LanguageEnglish
Pages421-429
Number of pages9
JournalCrystal Growth and Design
Volume19
Issue number1
Early online date20 Nov 2018
DOIs
Publication statusPublished - 2 Jan 2019

Fingerprint

Cloud seeding
inoculation
Supersaturation
Nucleation
supersaturation
Single crystals
nucleation
single crystals
Suspensions
Crystals
crystals
seeds
moments
Crystallization
Process design
Polymers
Calibration
crystallization
thresholds
polymers

Keywords

  • secondary nucleation rates
  • small scale seeding procedure
  • single crystal

Cite this

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title = "Measuring secondary nucleation through single crystal seeding",
abstract = "This article presents a novel assessment method for secondary nucleation rates using a well-controlled, small scale seeding procedure. The procedure comprises the seeding of a well-monitored, stirred, supersaturated solution by a carefully selected single crystal under conditions at which spontaneous nucleation does not occur. The determined number of particles in time were translated to a suspension density using a calibration performed with monodisperse polymer spheres. The increasing crystal suspension density in time subsequently allowed the determination of the secondary nucleation rate under very specific conditions of supersaturation and temperature. The secondary nucleation rate was measured as a function of seed crystal size and supersaturation. It was observed that the time elapsed between the moment a single seed crystal is added and the moment the suspension density started to increase is larger when the seeded crystals are smaller and the supersaturation is lower. A systematic study of secondary nucleation at different supersaturations led to the determination of a supersaturation threshold for secondary nucleation, which could be used in industrial crystallization process design to identify process conditions with the right secondary nucleation rate behavior.",
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Measuring secondary nucleation through single crystal seeding. / Briuglia, Maria L.; Sefcik, Jan; Horst, Joop H. ter.

In: Crystal Growth and Design, Vol. 19, No. 1, 02.01.2019, p. 421-429.

Research output: Contribution to journalArticle

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AU - Sefcik, Jan

AU - Horst, Joop H. ter

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N2 - This article presents a novel assessment method for secondary nucleation rates using a well-controlled, small scale seeding procedure. The procedure comprises the seeding of a well-monitored, stirred, supersaturated solution by a carefully selected single crystal under conditions at which spontaneous nucleation does not occur. The determined number of particles in time were translated to a suspension density using a calibration performed with monodisperse polymer spheres. The increasing crystal suspension density in time subsequently allowed the determination of the secondary nucleation rate under very specific conditions of supersaturation and temperature. The secondary nucleation rate was measured as a function of seed crystal size and supersaturation. It was observed that the time elapsed between the moment a single seed crystal is added and the moment the suspension density started to increase is larger when the seeded crystals are smaller and the supersaturation is lower. A systematic study of secondary nucleation at different supersaturations led to the determination of a supersaturation threshold for secondary nucleation, which could be used in industrial crystallization process design to identify process conditions with the right secondary nucleation rate behavior.

AB - This article presents a novel assessment method for secondary nucleation rates using a well-controlled, small scale seeding procedure. The procedure comprises the seeding of a well-monitored, stirred, supersaturated solution by a carefully selected single crystal under conditions at which spontaneous nucleation does not occur. The determined number of particles in time were translated to a suspension density using a calibration performed with monodisperse polymer spheres. The increasing crystal suspension density in time subsequently allowed the determination of the secondary nucleation rate under very specific conditions of supersaturation and temperature. The secondary nucleation rate was measured as a function of seed crystal size and supersaturation. It was observed that the time elapsed between the moment a single seed crystal is added and the moment the suspension density started to increase is larger when the seeded crystals are smaller and the supersaturation is lower. A systematic study of secondary nucleation at different supersaturations led to the determination of a supersaturation threshold for secondary nucleation, which could be used in industrial crystallization process design to identify process conditions with the right secondary nucleation rate behavior.

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