Hydrothermal synthesis and characterization of a new boron-aluminium oxochloride

Ji Hong Yu; Jie Sheng Chen; Ru Ren Xu; Yi Hua Xu; Yong Yue

doi:10.1016/0277-5387(96)00180-5

Hydrothermal synthesis and characterization of a new boron-aluminium oxochloride

Ji Hong Yu, Jie Sheng Chen, Ru Ren Xu^*, Yi Hua Xu, Yong Yue

^*Corresponding author for this work

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

16 Citations (Scopus)

Abstract

A new boron-aluminium oxochloride denoted as BAC(8) was synthesized hydrothermally in the system H₃BO₃-AlCl₃-CaO-H₂O, and the compound was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductive coupled plasma analysis (ICP), infrared spectroscopy (IR), magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy and thermal analysis. The effects of pH, temperature, cations and anions on the crystallization of BAC(8) are discussed. Chemical analysis shows that BAC(8) has an empirical molar composition of 1.0B₂O₃ : 1.0Al₂O₃ : 0.2HCl : 2.6H₂O. The basic building units for BAC(8) are triangular BO₃ and tetrahedral BO₄ with a BO₃/BO₄ ratio of 11.5, as well as octahedrally coordinated Al. Thermal analysis indicates that BAC(8) is stable up to 420°C, and at higher temperature HCl and H₂O evolve from the sample. Calcination at above 700°C causes BAC(8) to transform via an amorphous phase to the known crystalline material Al₄B₂O₉.

Original language	English
Pages (from-to)	4127-4132
Number of pages	6
Journal	Polyhedron
Volume	15
Issue number	23
DOIs	https://doi.org/10.1016/0277-5387(96)00180-5
Publication status	Published - 6 Sept 1996
Externally published	Yes

Keywords

Boron coordination
Boron-aluminium oxochloride
Characterization
Composition
Hydrothermal synthesis
Thermal properties

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10.1016/0277-5387(96)00180-5

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@article{1426ed13b24947f0bb58eb3f4c9e374c,

title = "Hydrothermal synthesis and characterization of a new boron-aluminium oxochloride",

abstract = "A new boron-aluminium oxochloride denoted as BAC(8) was synthesized hydrothermally in the system H3BO3-AlCl3-CaO-H2O, and the compound was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductive coupled plasma analysis (ICP), infrared spectroscopy (IR), magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy and thermal analysis. The effects of pH, temperature, cations and anions on the crystallization of BAC(8) are discussed. Chemical analysis shows that BAC(8) has an empirical molar composition of 1.0B2O3 : 1.0Al2O3 : 0.2HCl : 2.6H2O. The basic building units for BAC(8) are triangular BO3 and tetrahedral BO4 with a BO3/BO4 ratio of 11.5, as well as octahedrally coordinated Al. Thermal analysis indicates that BAC(8) is stable up to 420°C, and at higher temperature HCl and H2O evolve from the sample. Calcination at above 700°C causes BAC(8) to transform via an amorphous phase to the known crystalline material Al4B2O9.",

keywords = "Boron coordination, Boron-aluminium oxochloride, Characterization, Composition, Hydrothermal synthesis, Thermal properties",

author = "Yu, {Ji Hong} and Chen, {Jie Sheng} and Xu, {Ru Ren} and Xu, {Yi Hua} and Yong Yue",

year = "1996",

month = sep,

day = "6",

doi = "10.1016/0277-5387(96)00180-5",

language = "English",

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T1 - Hydrothermal synthesis and characterization of a new boron-aluminium oxochloride

AU - Yu, Ji Hong

AU - Chen, Jie Sheng

AU - Xu, Ru Ren

AU - Xu, Yi Hua

AU - Yue, Yong

PY - 1996/9/6

Y1 - 1996/9/6

N2 - A new boron-aluminium oxochloride denoted as BAC(8) was synthesized hydrothermally in the system H3BO3-AlCl3-CaO-H2O, and the compound was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductive coupled plasma analysis (ICP), infrared spectroscopy (IR), magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy and thermal analysis. The effects of pH, temperature, cations and anions on the crystallization of BAC(8) are discussed. Chemical analysis shows that BAC(8) has an empirical molar composition of 1.0B2O3 : 1.0Al2O3 : 0.2HCl : 2.6H2O. The basic building units for BAC(8) are triangular BO3 and tetrahedral BO4 with a BO3/BO4 ratio of 11.5, as well as octahedrally coordinated Al. Thermal analysis indicates that BAC(8) is stable up to 420°C, and at higher temperature HCl and H2O evolve from the sample. Calcination at above 700°C causes BAC(8) to transform via an amorphous phase to the known crystalline material Al4B2O9.

AB - A new boron-aluminium oxochloride denoted as BAC(8) was synthesized hydrothermally in the system H3BO3-AlCl3-CaO-H2O, and the compound was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), inductive coupled plasma analysis (ICP), infrared spectroscopy (IR), magic-angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy and thermal analysis. The effects of pH, temperature, cations and anions on the crystallization of BAC(8) are discussed. Chemical analysis shows that BAC(8) has an empirical molar composition of 1.0B2O3 : 1.0Al2O3 : 0.2HCl : 2.6H2O. The basic building units for BAC(8) are triangular BO3 and tetrahedral BO4 with a BO3/BO4 ratio of 11.5, as well as octahedrally coordinated Al. Thermal analysis indicates that BAC(8) is stable up to 420°C, and at higher temperature HCl and H2O evolve from the sample. Calcination at above 700°C causes BAC(8) to transform via an amorphous phase to the known crystalline material Al4B2O9.

KW - Boron coordination

KW - Boron-aluminium oxochloride

KW - Characterization

KW - Composition

KW - Hydrothermal synthesis

KW - Thermal properties

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Hydrothermal synthesis and characterization of a new boron-aluminium oxochloride

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Keywords

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