Picture of smart phone in human hand

World leading smartphone and mobile technology research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by Strathclyde researchers from the Department of Computer & Information Sciences involved in researching exciting new applications for mobile and smartphone technology. But the transformative application of mobile technologies is also the focus of research within disciplines as diverse as Electronic & Electrical Engineering, Marketing, Human Resource Management and Biomedical Enginering, among others.

Explore Strathclyde's Open Access research on smartphone technology now...

Solid-state electrochemical synthesis of ammonia : a review

Amar, Ibrahim A. and Lan, Rong and Petit, Christophe T. G. and Tao, Shanwen (2011) Solid-state electrochemical synthesis of ammonia : a review. Journal of Solid State Electrochemistry, 15 (9). pp. 1845-1860. ISSN 1432-8488

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

Ammonia is one of the most produced chemicals worldwide, and it is not only a major end product but also an important energy storage intermediate. The solid-state electrochemical synthesis of ammonia has the promise to overcome the limitations of the conventional catalytic reactors such as the limited conversion, severe environmental pollution and high energy consumption. Solid-state electrolytes either protonic or oxide ion conductors have been reviewed and particular emphasis is placed on their application to synthesise ammonia. The highest rate of ammonia formation according to the type of electrolyte utilised were in the following order; solid polymers > Ce0.8Gd0.2O2-delta-(Ca-3(PO4)(2)-K3PO4) composites > fluorites > perovskites > pyrochlores although the catalysts in electrodes also play an important role. The highest rate reported so far is found to be 1.13 x 10(-8) mol s(-1) cm(-2) at 80 A degrees C with a potential of 2 V using Nafion membrane, SmFe0.7Cu0.1Ni0.2O3 (SFCN), and Ni-Ce0.8Sm0.2O2-delta as solid electrolyte, cathode and anode, respectively. Synthesising ammonia from steam and N-2, by-passing H-2 stage offers many advantages such as reduction of device numbers and then the overall costs. The factors affecting the rate of ammonia formation have been discussed as well.