ELECTROCATALYTIC NITROGEN FIXATION FOR DISTRIBUTED FERTILIZER PRODUCTION?

BY MICHAEL JEWESS AND ROBERT H CRABTREE

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Link to full text as pdf: FULL TEXT

This work was published in ACS Sustainable Chem. Eng., 2016, 4(11), 5855-5858.

Abstract

Production of aqueous ammonium nitrate solution on farms ready for use could involve solar arrays and a suitable electrocatalytic process, feasible half cell and overall reactions being:

 

reaction at the anode:     N2 + 6 e  + 6 H+  2 NH3

reaction at the cathode:  1.5 NH3 + 2.25 H2O → 0.75 NH44NO3 + 6 e + 6 H+

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overall reaction:               N2 + 2.25 H2O → 0.75 NH4NO3 + 0.5 NH3

 

Although the possibility of producing ammonium nitrate by electrolyis goes back to Sir Humphry Davy, modern catalysts might allow useful yields.

  

 

Keywords:  nitrogen fixation, Humphry Davy, Haber process, Ostwald process.

 

Further context and developments

Further context and developments are provided in Michael Jewess, “Davy hits the headlines (again)”, Royal Society of Chemistry Historical Group newsletter and summary of papers, Summer 2017 (in press), link to full text as pdf:  FULL TEXT2.

   

CONTACT

 

Use this link symmetry to contact Dr Michael Jewess and this link crabtree to contact Professor Robert H Crabtree.