REPUBLIC OF SERBIA

MINISTRY OF DEFENCE

www.mod.gov.rs

MINISTRY OF DEFENCE

Material Resources Sector

Defensive Technologies Department

Military Technical Institute

www.vti.mod.gov.rs

The Phosphate tungsten Bronzes Behavior in Oscillatory Reaction: Potential Application for Sensor Technology for Hazardous Cargo Transportation Safety

tijana V. MAksimović

Faculty of Science, Department of Chemistry, University of  Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia, tijana.maksimovic16@gmail.com

ljubinka G. joksović

Faculty of Science, Department of Chemistry, University of  Kragujevac, Radoja Domanovića 12, 34000 Kragujevac, Serbia, ljubinka@kg.ac.rs

jelena P. maksimović

Faculty for Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11000, Belgrade, Serbia, jelena.maksimovic@ffh.bg.ac.rs 

Abstract: The bronzes among others can be practically used as chemical sensors for a number of applications in which an oxidizing species need to be detected. Peroxide  compounds  are  oxidizers  and  can  be  neutralized  by  sufficiently strong  reducing  agents. One such reducing reagent is bronze, produced by thermal treatment. The rationale for mentioned sensor  is  that  the oxidation  by  peroxide transforms  the  conductive  bronze  species  into  a  non-conductive. In this work, we used Briggs-Rauscher (BR) oscillatory reaction for testing different doped and undoped phosphate tungsten bronzes and their capability to neutralize high oxidative medium, such as oscillatory reaction. The BR reaction itself is the oxidation of malonic acid in the presence of hydrogen-peroxide and iodate. The addition of doped and undoped phosphate tungsten bronzes in BR reaction changes oscillatory dynamics, and thus allows the determination of the best neutralized properties of investigated bronzes. Results obtained can be used for sensor technology for hazardous (peroxide compounds) cargo transportation safety.

Keywords: bronzes, phosphate tungsten bronzes, oscillatory reaction, Briggs-Rauscher (BR) reaction