Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability

E. Altay; T. Shahwan; M. Tanoǧlu

doi:10.1016/j.powtec.2007.05.004

Morphosynthesis of CaCO₃ at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability

E. Altay, T. Shahwan, M. Tanoǧlu

Research output: Contribution to journal › Article › peer-review

68 Scopus citations

Abstract

Facile precipitation of CaCO₃ was performed using aqueous solutions of CaCl₂ with Na₂CO₃ over a wide range of mixing and aging temperatures. The precipitation process was then repeated in the presence of PDDA, CTAB, and EDTA at the mixing temperatures of 30 °C, 50 °C, 70 °C, and 90 °C. The presence of these additives was seen to greatly suppress the formation of aragonite. Among these additives, EDTA was the one that showed the most prominent effects on particle morphology of CaCO₃. The sequence of pH adjustment appeared to be a critical factor for the additive functionality.

Original language	English (US)
Pages (from-to)	194-202
Number of pages	9
Journal	Powder Technology
Volume	178
Issue number	3
DOIs	https://doi.org/10.1016/j.powtec.2007.05.004
State	Published - Sep 25 2007
Externally published	Yes

Bibliographical note

Funding Information:
The authors acknowledge TUBITAK for its financial support (Project No. 104T089). The authors would like to thank the Center of Material Research/Izmir Institute of Technology for the assistance in the SEM and XRPD measurements.

Keywords

Aragonite
Calcite
Morphology

Publisher link

10.1016/j.powtec.2007.05.004

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title = "Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability",

abstract = "Facile precipitation of CaCO3 was performed using aqueous solutions of CaCl2 with Na2CO3 over a wide range of mixing and aging temperatures. The precipitation process was then repeated in the presence of PDDA, CTAB, and EDTA at the mixing temperatures of 30 °C, 50 °C, 70 °C, and 90 °C. The presence of these additives was seen to greatly suppress the formation of aragonite. Among these additives, EDTA was the one that showed the most prominent effects on particle morphology of CaCO3. The sequence of pH adjustment appeared to be a critical factor for the additive functionality.",

keywords = "Aragonite, Calcite, Morphology",

author = "E. Altay and T. Shahwan and M. Tanoǧlu",

note = "Funding Information: The authors acknowledge TUBITAK for its financial support (Project No. 104T089). The authors would like to thank the Center of Material Research/Izmir Institute of Technology for the assistance in the SEM and XRPD measurements.",

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T1 - Morphosynthesis of CaCO3 at different reaction temperatures and the effects of PDDA, CTAB, and EDTA on the particle morphology and polymorph stability

AU - Altay, E.

AU - Shahwan, T.

AU - Tanoǧlu, M.

N1 - Funding Information: The authors acknowledge TUBITAK for its financial support (Project No. 104T089). The authors would like to thank the Center of Material Research/Izmir Institute of Technology for the assistance in the SEM and XRPD measurements.

PY - 2007/9/25

Y1 - 2007/9/25

N2 - Facile precipitation of CaCO3 was performed using aqueous solutions of CaCl2 with Na2CO3 over a wide range of mixing and aging temperatures. The precipitation process was then repeated in the presence of PDDA, CTAB, and EDTA at the mixing temperatures of 30 °C, 50 °C, 70 °C, and 90 °C. The presence of these additives was seen to greatly suppress the formation of aragonite. Among these additives, EDTA was the one that showed the most prominent effects on particle morphology of CaCO3. The sequence of pH adjustment appeared to be a critical factor for the additive functionality.

AB - Facile precipitation of CaCO3 was performed using aqueous solutions of CaCl2 with Na2CO3 over a wide range of mixing and aging temperatures. The precipitation process was then repeated in the presence of PDDA, CTAB, and EDTA at the mixing temperatures of 30 °C, 50 °C, 70 °C, and 90 °C. The presence of these additives was seen to greatly suppress the formation of aragonite. Among these additives, EDTA was the one that showed the most prominent effects on particle morphology of CaCO3. The sequence of pH adjustment appeared to be a critical factor for the additive functionality.

KW - Aragonite

KW - Calcite

KW - Morphology

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