Preparation, Structure Determination and Thermal Transformation of a New Lithium Zinc Phosphate, δ1-LiZnPO4

Torben R. Jensen, Poul Norby*, Paul C. Stein, Anthony M.T. Bell

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Resumé

A new lithium zinc orthophosphate, δI-LiZnPO4, was synthesized from aqueous solution. Information from powder diffraction, using synchrotron radiation, and 31P MAS NMR spectroscopy allowed determination of the structure. The structure is orthorhombic (a = 10.0193(1), b = 4.9657(1), c = 6.6746(1) Å space group Pna21, No. 33, Z = 4. The structure may be seen as built from corner-sharing ZnO4- and PO4- tetrahedra forming a cristobalite-type framework structure. The lithium ions are 4-coordinated and situated in the 6-ring channels. The thermal transformations were investigated by thermogravimetric measurements (TG), differential thermal analysis (DTA), and high-temperature powder diffraction (HT-PXD). A transformation at ∼575°C is clearly visible on the Guinier Simon film (HT-PXD). This transformation is characterized by some disappearing lines in the powder pattern. The high-temperature polymorph of δI-LiZnPO4 is named δII-LiZnPO4. Phase transformations at ∼730 and δ1003°C are observed by HT-PXD and DTA, respectively. These observations are designated to the transformation to β-LiZnPO4 and from β- to γ-LiZnPO4.

OriginalsprogEngelsk
TidsskriftJournal of Solid State Chemistry
Vol/bind117
Udgave nummer1
Sider (fra-til)39-47
Antal sider9
ISSN0022-4596
DOI
StatusUdgivet - 1. jan. 1995

Fingeraftryk

Lithium
Differential thermal analysis
phosphates
Phosphates
Zinc
lithium
zinc
preparation
Synchrotron radiation
Polymorphism
Silicon Dioxide
Powders
Nuclear magnetic resonance spectroscopy
thermal analysis
Phase transitions
Ions
Temperature
diffraction
tetrahedrons
phase transformations

Citer dette

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title = "Preparation, Structure Determination and Thermal Transformation of a New Lithium Zinc Phosphate, δ1-LiZnPO4",
abstract = "A new lithium zinc orthophosphate, δI-LiZnPO4, was synthesized from aqueous solution. Information from powder diffraction, using synchrotron radiation, and 31P MAS NMR spectroscopy allowed determination of the structure. The structure is orthorhombic (a = 10.0193(1), b = 4.9657(1), c = 6.6746(1) {\AA} space group Pna21, No. 33, Z = 4. The structure may be seen as built from corner-sharing ZnO4- and PO4- tetrahedra forming a cristobalite-type framework structure. The lithium ions are 4-coordinated and situated in the 6-ring channels. The thermal transformations were investigated by thermogravimetric measurements (TG), differential thermal analysis (DTA), and high-temperature powder diffraction (HT-PXD). A transformation at ∼575°C is clearly visible on the Guinier Simon film (HT-PXD). This transformation is characterized by some disappearing lines in the powder pattern. The high-temperature polymorph of δI-LiZnPO4 is named δII-LiZnPO4. Phase transformations at ∼730 and δ1003°C are observed by HT-PXD and DTA, respectively. These observations are designated to the transformation to β-LiZnPO4 and from β- to γ-LiZnPO4.",
author = "Jensen, {Torben R.} and Poul Norby and Stein, {Paul C.} and Bell, {Anthony M.T.}",
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Preparation, Structure Determination and Thermal Transformation of a New Lithium Zinc Phosphate, δ1-LiZnPO4. / Jensen, Torben R.; Norby, Poul; Stein, Paul C.; Bell, Anthony M.T.

I: Journal of Solid State Chemistry, Bind 117, Nr. 1, 01.01.1995, s. 39-47.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Preparation, Structure Determination and Thermal Transformation of a New Lithium Zinc Phosphate, δ1-LiZnPO4

AU - Jensen, Torben R.

AU - Norby, Poul

AU - Stein, Paul C.

AU - Bell, Anthony M.T.

PY - 1995/1/1

Y1 - 1995/1/1

N2 - A new lithium zinc orthophosphate, δI-LiZnPO4, was synthesized from aqueous solution. Information from powder diffraction, using synchrotron radiation, and 31P MAS NMR spectroscopy allowed determination of the structure. The structure is orthorhombic (a = 10.0193(1), b = 4.9657(1), c = 6.6746(1) Å space group Pna21, No. 33, Z = 4. The structure may be seen as built from corner-sharing ZnO4- and PO4- tetrahedra forming a cristobalite-type framework structure. The lithium ions are 4-coordinated and situated in the 6-ring channels. The thermal transformations were investigated by thermogravimetric measurements (TG), differential thermal analysis (DTA), and high-temperature powder diffraction (HT-PXD). A transformation at ∼575°C is clearly visible on the Guinier Simon film (HT-PXD). This transformation is characterized by some disappearing lines in the powder pattern. The high-temperature polymorph of δI-LiZnPO4 is named δII-LiZnPO4. Phase transformations at ∼730 and δ1003°C are observed by HT-PXD and DTA, respectively. These observations are designated to the transformation to β-LiZnPO4 and from β- to γ-LiZnPO4.

AB - A new lithium zinc orthophosphate, δI-LiZnPO4, was synthesized from aqueous solution. Information from powder diffraction, using synchrotron radiation, and 31P MAS NMR spectroscopy allowed determination of the structure. The structure is orthorhombic (a = 10.0193(1), b = 4.9657(1), c = 6.6746(1) Å space group Pna21, No. 33, Z = 4. The structure may be seen as built from corner-sharing ZnO4- and PO4- tetrahedra forming a cristobalite-type framework structure. The lithium ions are 4-coordinated and situated in the 6-ring channels. The thermal transformations were investigated by thermogravimetric measurements (TG), differential thermal analysis (DTA), and high-temperature powder diffraction (HT-PXD). A transformation at ∼575°C is clearly visible on the Guinier Simon film (HT-PXD). This transformation is characterized by some disappearing lines in the powder pattern. The high-temperature polymorph of δI-LiZnPO4 is named δII-LiZnPO4. Phase transformations at ∼730 and δ1003°C are observed by HT-PXD and DTA, respectively. These observations are designated to the transformation to β-LiZnPO4 and from β- to γ-LiZnPO4.

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