Electrocatalytic reduction of nitrate and nitrite at Nafion-coated electrodes in concentrated sodium hydroxide solution

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Description

The electrochemical reduction of nitrate ions in alkaline solution has been studied using various cathode materials and is the basis for a patent describing the conversion of nitrate into hydroxide ion in carbonate solutions. Recently, Taniguchi et al. have reported that certain well studied transition metal cyclic amine complexes, namely Co(III)-cyclam and Ni(II)-cyclam where cyclam is 1,4,8,11-tetraazacyclotetradecane, efficiently electrocatalyze the reduction of nitrate and nitrite to hydroxylamine at mercury electrodes. Here the authors report that the metal cyclam catalyst can be incorporated into a Nafion film electrode, and that the reduction of nitrate and nitrite proceeds efficiently at these electrodes ... continued below

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13 p.

Creation Information

Li, H.; Chambers, J. Q. & Hobbs, D. T. Spring 1988.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 27 times . More information about this report can be viewed below.

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Authors

  • Li, H. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  • Chambers, J. Q. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemistry
  • Hobbs, D. T. E.I. DuPont de Nemours and Co., Aiken, SC (United States). Savannah River Lab.

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Publisher

  • Savannah River Laboratory
    Publisher Info: E.I. DuPont de Nemours and Co., Savannah River Lab., Aiken, SC (United States)
    Place of Publication: Aiken, South Carolina

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Description

The electrochemical reduction of nitrate ions in alkaline solution has been studied using various cathode materials and is the basis for a patent describing the conversion of nitrate into hydroxide ion in carbonate solutions. Recently, Taniguchi et al. have reported that certain well studied transition metal cyclic amine complexes, namely Co(III)-cyclam and Ni(II)-cyclam where cyclam is 1,4,8,11-tetraazacyclotetradecane, efficiently electrocatalyze the reduction of nitrate and nitrite to hydroxylamine at mercury electrodes. Here the authors report that the metal cyclam catalyst can be incorporated into a Nafion film electrode, and that the reduction of nitrate and nitrite proceeds efficiently at these electrodes in concentrated NaOH solution. Nafion is a perfluoroalkanesulfonated cation exchange material that has been widely used to immobilize redox couples at electrode surfaces, including electrocatalysis species.

Physical Description

13 p.

Notes

OSTI as DE98006514

Source

  • Other Information: PBD: [1988]

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  • Other: DE98006514
  • Report No.: DP-MS--88-106
  • Grant Number: AC09-89SR18035
  • DOI: 10.2172/665915 | External Link
  • Office of Scientific & Technical Information Report Number: 665915
  • Archival Resource Key: ark:/67531/metadc705637

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Creation Date

  • Spring 1988

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  • Sept. 12, 2015, 6:31 a.m.

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  • March 23, 2016, 12:12 p.m.

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Li, H.; Chambers, J. Q. & Hobbs, D. T. Electrocatalytic reduction of nitrate and nitrite at Nafion-coated electrodes in concentrated sodium hydroxide solution, report, Spring 1988; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc705637/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.