ELECTROCATALYTIC NITROGEN FIXATION FOR DISTRIBUTED FERTILIZER PRODUCTION?

BY MICHAEL JEWESS AND ROBERT H CRABTREE

Link back to home page including e-mail contact details for Michael Jewess and related papers:  SYMMETRYHOME

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 cathode:     N2 + 6 e  + 6 H+  2 NH3

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

___________________________________________________________

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)”:  DAVYHEADLINE

   

CONTACT

 

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