%0 Journal Article
%T Efficiency of Cobalt-Boron Oxide (Co-B-O) Nanocomposites in Catalytic Reduction of CO Emissions from Automotive Exhaust
%A Paata Nikoleishvili
%A Gigla Tsurtsumia
%A Nana Koiava
%A Tina Lejava
%A Rusudan Kurtanidze
%A Nunu Jokhadze
%J Green and Sustainable Chemistry
%P 13-21
%@ 2160-696X
%D 2025
%I Scientific Research Publishing
%R 10.4236/gsc.2025.152002
%X This study addresses the critical challenge of automotive emissions by developing cobalt-boron oxide (CoB<sub>2</sub>O<sub>4</sub>) catalysts as sustainable alternatives to platinum-group metals. The optimized CoB<sub>2</sub>O<sub>4</sub>/Al-Ca system achieves 95% CO conversion at 175&#730;C and maintains &gt;90% stability over 35 hours, demonstrating superior low-temperature activity and durability compared to conventional converters. Comprehensive characterization reveals boron doping enhances oxygen mobility, while 70 atm compaction ensures mechanical stability. Performance tests across space velocities (1000 - 30,000 h<sup>&#8722;</sup><sup>1</sup>) identify optimal operation at 250 - 350&#730;C and &lt;5000 h<sup>&#8722;</sup><sup>1</sup>. These findings advance emission control technology, offering a cost-effective solution with 90% reduced precious metal dependence, particularly beneficial for cold-start conditions and urban vehicle applications.
%K Cobalt-Boron Oxide
%K Automotive Catalysis
%K CO Reduction
%K Nanocomposites
%K Low-Temperature Catalysis
%K Emission Control
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=143096