Preparation and characterization of lanthanum carbonate hydroxide

J. Sun; T. Kyotani; A. Tomita

doi:10.1016/0022-4596(86)90093-9

Preparation and characterization of lanthanum carbonate hydroxide

J. Sun, T. Kyotani, A. Tomita

ENG - Chemical Engineering

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

23 Citations (Scopus)

Abstract

Two polymorphs of LaCO₃OH were prepared from either La₂(CO₃)₃ or LaBr(OH)₂ at an ambient pressure. The first one was the same as reported before by several workers who prepared it by the hydrothermal technique. The second one is a new polymorph of LaCO₃OH. The infrared spectra and thermogravimetric curves of these two polymorphs were determined and compared. Its crystal data were determined by X-ray powder diffraction: orthorhombic, a = 5.033(3)Å, b = 8.598(5) Å, c = 7.401(3) Å. All data support that the structure of this new modification is similar to that of ancylite.

Original language	English
Pages (from-to)	94-99
Number of pages	6
Journal	Journal of Solid State Chemistry
Volume	65
Issue number	1
DOIs	https://doi.org/10.1016/0022-4596(86)90093-9
Publication status	Published - 1986 Nov 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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title = "Preparation and characterization of lanthanum carbonate hydroxide",

abstract = "Two polymorphs of LaCO3OH were prepared from either La2(CO3)3 or LaBr(OH)2 at an ambient pressure. The first one was the same as reported before by several workers who prepared it by the hydrothermal technique. The second one is a new polymorph of LaCO3OH. The infrared spectra and thermogravimetric curves of these two polymorphs were determined and compared. Its crystal data were determined by X-ray powder diffraction: orthorhombic, a = 5.033(3){\AA}, b = 8.598(5) {\AA}, c = 7.401(3) {\AA}. All data support that the structure of this new modification is similar to that of ancylite.",

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AU - Tomita, A.

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N2 - Two polymorphs of LaCO3OH were prepared from either La2(CO3)3 or LaBr(OH)2 at an ambient pressure. The first one was the same as reported before by several workers who prepared it by the hydrothermal technique. The second one is a new polymorph of LaCO3OH. The infrared spectra and thermogravimetric curves of these two polymorphs were determined and compared. Its crystal data were determined by X-ray powder diffraction: orthorhombic, a = 5.033(3)Å, b = 8.598(5) Å, c = 7.401(3) Å. All data support that the structure of this new modification is similar to that of ancylite.

AB - Two polymorphs of LaCO3OH were prepared from either La2(CO3)3 or LaBr(OH)2 at an ambient pressure. The first one was the same as reported before by several workers who prepared it by the hydrothermal technique. The second one is a new polymorph of LaCO3OH. The infrared spectra and thermogravimetric curves of these two polymorphs were determined and compared. Its crystal data were determined by X-ray powder diffraction: orthorhombic, a = 5.033(3)Å, b = 8.598(5) Å, c = 7.401(3) Å. All data support that the structure of this new modification is similar to that of ancylite.

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