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Effect of Water on Activity and Protective Properties of Catalysts Used in Respiratory Protective Equipment
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Author(s): Tatyana Leonidovna Rakitskaya (I. I. Mechnikov Odessa National University, Ukraine), Tatyana A. Kiose (I. I. Mechnikov Odessa National University, Ukraine), Alla S. Truba (I. I. Mechnikov Odessa National University, Ukraine)and Alim Abdul-Amidovich Ennan (Physico-Chemical Institute for Environment and Human Protection of MES of Ukraine, Ukraine & National Academy of Sciences of Ukraine, Ukraine)
Copyright: 2022
Pages: 31
Source title:
Handbook of Research on Water Sciences and Society
Source Author(s)/Editor(s): Ashok Vaseashta (International Clean Water Institute, USA & Transylvania University of Brasov, Romania & Academy of Sciences of Moldova, Moldova), Gheorghe Duca (Institute of Chemistry, Moldova State University, Moldova & Academy of Science of Moldova and Romanian Academy, Romania.)and Sergey Travin (Federal Research Center for Chemical Physics and N. N. Semenov of the Russian Academy of Sciences, Russia)
DOI: 10.4018/978-1-7998-7356-3.ch021
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Abstract
This chapter presents the results of the study on the water effect on the activity and protective properties of supported metal-complexes catalysts (SMCC) and manganese oxides intended for equipping personal respiratory protection equipment (PRPE) against toxic carbon monoxide and ozone. The problem is that many catalysts reduce or completely lose activity in conditions of high air humidity and do not ensure stable air purification from gaseous toxic substances to maximum permissible concentrations for the working area. The factors determining the effect of water are the water vapor adsorption, adsorbed water molecules protolysis, and dehydration of the carrier surface. The quantitative model is evaluated by the generalized thermodynamic parameter GTP, with which aid it is possible to predict the mechanism of formation and the catalytic-active complexes composition. The natural tripoli and acidic-modified clinoptilolite-based catalysts demonstrate steady CO protecting properties under the air-gas flow high humidity and are used for equipment PRPE.
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