Ruthenium catalyst on carbon nanofiber support layers for use in silicon-based structured microreactors. Part II: Catalytic reduction of bromate contaminants in aqueous phase

▶ Catalytic microreactor system is used efficiently to remove bromate ions from water. ▶ Carbon nanofiber (CNF) supported ruthenium (Ru) catalyst reduced bromate ions efficiently. ▶ Open structure of CNF provides better accessibility to Ru active sites than in case of microporous activated carbon. ▶ Formation of inactive Ru(OH)x phase and sintering cause catalyst deactivation. ▶ Use of higher alcohols give stabler activity of Ru/CNF catalyst in bromate reduction.