Electrochemistry in Near-Critical and Supercritical Fluids. 3. Studies of Br(-), I(-), and Hydroquinone in Aqueous Solutions.

Abstract

A new type of apparatus has been constructed for carrying out electrochemistry in nearcritical and supercritical aqueous solutions. The following systems have been studied at a platinum electrode: H2O/O2, I(-)/I2, Br(-)/Br2, and hydroquinone/benzoquinone. The compact, alumina flow-cell can be heated or cooled quickly, and can be recharged with fresh electrolyte solution while at high temperature and pressure. A large reduction in the potential required for the electrolysis of water was observed. Diffusivities have been measured for iodide ions and hydroquinone. General agreement with the Stokes-Einstein model was observed in the temperature range 25 C to 375 C.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1986
Accession Number
ADA169138

Entities

People

  • Allen J. Bard
  • Isaac Trachtenberg
  • Keith P. Johnson
  • William M. Flarsheim
  • Yu-min Tsou

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Aqueous Solutions
  • Chemical Synthesis
  • Chemistry
  • Dermatologic Agents
  • Diffusion Coefficient
  • Electrochemical Cells
  • Electrochemistry
  • Electrodes
  • Equations
  • Free Energy
  • High Pressure
  • High Temperature
  • Liquid Chromatography
  • Low Temperature
  • Measurement
  • New York
  • Organic Compounds

Fields of Study

  • Chemistry

Readers

  • Combustion and Flow Dynamics.
  • Electrochemical Engineering/ Fuel Cell Technologies
  • Electrochemical Surface Science