Table of Contents
Journal of Fuels
Volume 2014, Article ID 670209, 10 pages
http://dx.doi.org/10.1155/2014/670209
Research Article

Separate Determination of Borohydride, Borate, Hydroxide, and Carbonate in the Borohydride Fuel Cell by Acid-Base and Iodometric Potentiometric Titration

Institute of Chemistry, Saratov State University, 83 Astrakhanskaya Street, Saratov 410012, Russia

Received 23 May 2013; Accepted 26 November 2013; Published 29 January 2014

Academic Editor: César Sequeira

Copyright © 2014 A. V. Churikov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A methodology for quantitative chemical analysis of the complex “borohydride-borate-hydroxide-carbonate-water” mixtures used as fuel in the borohydride fuel cell was developed and optimized. The methodology includes the combined usage of the acid-base and iodometric titration methods. The acid-base titration method, which simultaneously uses the technique of differentiation and computer simulation of titration curves, allows one to determine the contents of hydroxide (alkali), carbonate, and total “borate + borohydride” content. The iodometric titration method allows one to selectively determine borohydride, so the content of each of , , , and anions in the fuel becomes estimated. The average determination error depends on the number and ratio of compounds in a mixture. Specific details of the analysis of various fuel mixtures are discussed.