Hydrothermal Crystal Growth of Lithium Tetraborate and Lithium Gamma-Metaborate

Abstract

Growth of lithium tetraborate by the hydrothermal method was attempted in 10^-6 M LiOH, both by spontaneous nucleation and transport growth. Tetraborate grew out of the first spontaneous nucleation reaction, while the seed dissolved and lithium gamma-metaborate formed during the transport growth reactions. A species thermodynamic stability study showed gamma-metaborate formed exclusively from 350 deg C to 550 deg C, and Li3B5O8(OH)2 was observed at 250 deg C; tetraborate was not observed. A solubility study on lithium tetraborate did not achieve equilibrium conditions, but did demonstrate that gamma-metaborate is significantly more thermodynamically stable than tetraborate under the tested conditions. Formation of lithium tetraborate hydrothermally was shown to result from kinetic growth.

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Document Details

Document Type
Technical Report
Publication Date
Mar 27, 2014
Accession Number
ADA598915

Entities

People

  • Jeffrey J. Graham

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Air Force
  • Band Structures
  • Bravais Lattices
  • Charge Carriers
  • Chemistry
  • Computational Fluid Dynamics
  • Crystal Lattices
  • Crystal Structure
  • Crystallography
  • Crystals
  • Differential Equations
  • Energy Bands
  • Energy Transfer
  • Optical Materials
  • Solid State Physics
  • Thermodynamics
  • Two Dimensional

Readers

  • Electrochemical Engineering/ Fuel Cell Technologies
  • Materials Science and Engineering.