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Title: Growth Kinetics and Morphology of Barite Crystals Derived from Face-Specific Growth Rates

Journal Article · · Crystal Growth and Design
DOI:https://doi.org/10.1021/cg501507p· OSTI ID:1325464
 [1];  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical Sciences Division

Here we investigate the growth kinetics and morphology of barite (BaSO4) crystals by measuring the growth rates of the (001), (210), (010), and (100) surfaces using vertical scanning interferometry. Solutions with saturation indices 1.1, 2.1, and 3.0 without additional electrolyte, in 0.7 M NaCl, or in 1.3 mM SrCl2 are investigated. Face-specific growth rates are inhibited in the SrCl2 solution relative to a solution without electrolyte, except for (100). Contrarily, growth of all faces is promoted in the NaCl solution. The variation of face-specific rates is solution-specific, which leads to a. change of the crystal morphology and overall growth rate of crystals. The measured face-specific growth rates are used to model the growth of single crystals. Modeled crystals have a morphology and size similar to those grown from solution. Based on the model the time dependence of surface area and growth rates is analyzed. Growth rates change with time due to surface area normalization for small crystals and large growth intervals. By extrapolating rates to crystals with large surfaces areas, time-independent growth rates are 0.783, 2.96, and 0.513 mmol∙m-2∙h-1, for saturation index 2.1 solutions without additional electrolyte, NaCl, and SrCl2, respectively.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1325464
Journal Information:
Crystal Growth and Design, Vol. 15, Issue 5; ISSN 1528-7483
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 42 works
Citation information provided by
Web of Science

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BaCO 3 and NH 3 SO 3 as precursors for the hydrothermal synthesis of BaSO 4 journal January 2018
New software protocols for enabling laboratory based temporal CT journal September 2018
The Effect of Ionic Strength and Sraq upon the Uptake of Ra during the Recrystallization of Barite journal November 2018
Nanospectroscopy Captures Nanoscale Compositional Zonation in Barite Solid Solutions journal August 2018
A microfluidic approach for probing hydrodynamic effects in barite scale formation journal January 2019
Precise determination of water exchanges on a mineral surface journal January 2016