Kinetics of mass crystallization of calcium carbonate at 25, 30 and 37 °C

Silvia Rosa; Hans Erik Lundager Madsen

doi:10.1016/j.jcrysgro.2010.11.005

Kinetics of mass crystallization of calcium carbonate at 25, 30 and 37 °C

27 Citationer (Scopus)

Abstract

Calcium carbonate crystal growth kinetics was studied by simple mass crystallization, recording pH as function of time. The phase crystallizing was vaterite at 25 °C, calcite at 30 °C and aragonite at 37 °C. Growth kinetics at the initial stage followed that of the polynuclear surface nucleation mechanism, and from the slopes of linearized graphs edge free energies of the three phases could be determined. The values were: calcite 35.4 pJ/m at 30 °C, aragonite 32.3 pJ/m at 37 °C and vaterite 24.2 pJ/m at 25 °C. These values agree reasonably well with literature values determined by other methods, and they are useful in testing the validity of the relation between step distance of a growth spiral and size of a critical surface nucleus as assumed in the BurtonCabreraFrank theory.

Originalsprog	Engelsk
Tidsskrift	Journal of Crystal Growth
Vol/bind	318
Udgave nummer	1
Sider (fra-til)	99-102
Antal sider	4
ISSN	0022-0248
DOI	https://doi.org/10.1016/j.jcrysgro.2010.11.005
Status	Udgivet - 1 mar. 2011
Begivenhed	International Conference on Crystal Growth (ICCG) - Beijing, Kina Varighed: 8 aug. 2010 → 13 aug. 2010 Konferencens nummer: 16

Konference

Konference	International Conference on Crystal Growth (ICCG)
Nummer	16
Land/Område	Kina
By	Beijing
Periode	08/08/2010 → 13/08/2010

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10.1016/j.jcrysgro.2010.11.005

Citationsformater

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title = "Kinetics of mass crystallization of calcium carbonate at 25, 30 and 37 °C",

abstract = "Calcium carbonate crystal growth kinetics was studied by simple mass crystallization, recording pH as function of time. The phase crystallizing was vaterite at 25 °C, calcite at 30 °C and aragonite at 37 °C. Growth kinetics at the initial stage followed that of the polynuclear surface nucleation mechanism, and from the slopes of linearized graphs edge free energies of the three phases could be determined. The values were: calcite 35.4 pJ/m at 30 °C, aragonite 32.3 pJ/m at 37 °C and vaterite 24.2 pJ/m at 25 °C. These values agree reasonably well with literature values determined by other methods, and they are useful in testing the validity of the relation between step distance of a growth spiral and size of a critical surface nucleus as assumed in the BurtonCabreraFrank theory.",

author = "Silvia Rosa and Madsen, {Hans Erik Lundager}",

note = "The 16th International Conference on Crystal Growth (ICCG16)/The 14th International Conference on Vapor Growth and Epitaxy (ICVGE14) ; International Conference on Crystal Growth (ICCG) ; Conference date: 08-08-2010 Through 13-08-2010",

year = "2011",

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day = "1",

doi = "10.1016/j.jcrysgro.2010.11.005",

language = "English",

volume = "318",

pages = "99--102",

journal = "Journal of Crystal Growth",

issn = "0022-0248",

publisher = "Elsevier BV * North-Holland",

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T1 - Kinetics of mass crystallization of calcium carbonate at 25, 30 and 37 °C

AU - Rosa, Silvia

AU - Madsen, Hans Erik Lundager

N1 - Conference code: 16

PY - 2011/3/1

Y1 - 2011/3/1

N2 - Calcium carbonate crystal growth kinetics was studied by simple mass crystallization, recording pH as function of time. The phase crystallizing was vaterite at 25 °C, calcite at 30 °C and aragonite at 37 °C. Growth kinetics at the initial stage followed that of the polynuclear surface nucleation mechanism, and from the slopes of linearized graphs edge free energies of the three phases could be determined. The values were: calcite 35.4 pJ/m at 30 °C, aragonite 32.3 pJ/m at 37 °C and vaterite 24.2 pJ/m at 25 °C. These values agree reasonably well with literature values determined by other methods, and they are useful in testing the validity of the relation between step distance of a growth spiral and size of a critical surface nucleus as assumed in the BurtonCabreraFrank theory.

AB - Calcium carbonate crystal growth kinetics was studied by simple mass crystallization, recording pH as function of time. The phase crystallizing was vaterite at 25 °C, calcite at 30 °C and aragonite at 37 °C. Growth kinetics at the initial stage followed that of the polynuclear surface nucleation mechanism, and from the slopes of linearized graphs edge free energies of the three phases could be determined. The values were: calcite 35.4 pJ/m at 30 °C, aragonite 32.3 pJ/m at 37 °C and vaterite 24.2 pJ/m at 25 °C. These values agree reasonably well with literature values determined by other methods, and they are useful in testing the validity of the relation between step distance of a growth spiral and size of a critical surface nucleus as assumed in the BurtonCabreraFrank theory.

U2 - 10.1016/j.jcrysgro.2010.11.005

DO - 10.1016/j.jcrysgro.2010.11.005

M3 - Journal article

SN - 0022-0248

VL - 318

SP - 99

EP - 102

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

IS - 1

T2 - International Conference on Crystal Growth (ICCG)

Y2 - 8 August 2010 through 13 August 2010

ER -

Kinetics of mass crystallization of calcium carbonate at 25, 30 and 37 °C

Abstract

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