A method of removing N2O from waste gases over optimized oxidic catalysts
L. Obalováa, K. Jirátováb, F. Kovandac
aInstitute of Environmental Technology, Faculty of Metallurgy and Materials Engineering VŠB -Technical University of Ostrava, 17. listopadu 15, 708 33 Ostrava, Czech Republic
bInstitute of Chemical Process Fundamentals, Czech Academy of Sciences, Rozvojová 135,
165 02 Prague 6, Czech Republic
cDepartment of Solid State Chemistry, Institute of Chemical Technology, Technická 5, 160 00 Prague, Czech Republic
The N2O removal process using a catalyst prepared by calcination of beta cobalt hydroxide and subsequent cesium modification can be used to reduce N2O emissions in the waste gases. In addition to the waste gases from nitric acid production, these are also waste gases from the production of glyoxal, caprolactam, combustion processes and others.
Compared to the catalysts published in the literature, the catalyst from the invention has a higher activity and at the same time it does not contain precious metals. It is therefore more economically advantageous.
The catalyst was verified in a pilot plant of CHEMOPROJEKT CHEMICALS Ltd. connected to the waste gas from nitric acid production as part of the TA CR TA01020336 project.