“…8a ) (Honcharov et al 2016 ). It solves the problem of loading difficulties with conventional deposition methods on nonporous supports (glass, metal, ceramic) (Sanzhak et al 2018 ).…”
Section: Preparation Of Stainless Steel Catalystmentioning
confidence: 99%
“… Fig. 15 Scheme of ion implantation ( a ); XRD ( b ), SAXS (C), AFM ( d ) and Joule-heating performance ( e ) of the implanted samples (Honcharov et al 2016 ; Sanzhak et al 2018 ) …”
Section: Preparation Of Stainless Steel Catalystmentioning
confidence: 99%
“…15c ) (Sanzhak et al 2018 ). XPS shows that the amorphous layer is existed as oxides, nitrides, and oxynitrides, while thermal treatment leads to oxidation of oxynitrides to oxides, and nitrides to the oxynitrides, respectively (Sanzhak et al 2018 ). Fig.…”
Section: Preparation Of Stainless Steel Catalystmentioning
With the awakening of environmental awareness, the importance of air quality to human health and the proper functioning of social mechanisms is becoming increasingly prominent. The low cost and high efficiency of catalytic technique makes it a natural choice for achieving deep air purification. Stainless steel alloys have demonstrated their full potential for application in a variety of catalytic fields. The diversity of 3D networks or fibrous structures increases the turbulence within the heterogeneous catalysis, balance the temperature distribution in the reaction bed and, in combination with a highly thermally conductive skeleton, avoid agglomeration and deactivation of the active components; corrosion resistance and thermal stability are adapted to highly endothermic/exothermic or corrosive reaction environments; oxide layers formed by bulk transition metals activated by thermal treatment or etching can significantly alter the physico-chemical properties between the substrate and active species, further improving the stability of stainless steel catalysts; suitable electronic conductivity can be applied to the electrothermal catalysis, which is expected to provide guidance for the reduction of intermittent emission exhausts and the storage of renewable energy. The current applications of stainless steel as catalyst or support in the air purification have covered soot particle capture and combustion, catalytic oxidation of VOCs, SCR, and air sterilization. This paper summarizes several preparation methods and presents the relationships between the preparation process and the activity, and reviews its application and the current status of research in atmospheric environmental management, proposing the advantages and challenges of the stainless steel-based catalysts.
“…8a ) (Honcharov et al 2016 ). It solves the problem of loading difficulties with conventional deposition methods on nonporous supports (glass, metal, ceramic) (Sanzhak et al 2018 ).…”
Section: Preparation Of Stainless Steel Catalystmentioning
confidence: 99%
“… Fig. 15 Scheme of ion implantation ( a ); XRD ( b ), SAXS (C), AFM ( d ) and Joule-heating performance ( e ) of the implanted samples (Honcharov et al 2016 ; Sanzhak et al 2018 ) …”
Section: Preparation Of Stainless Steel Catalystmentioning
confidence: 99%
“…15c ) (Sanzhak et al 2018 ). XPS shows that the amorphous layer is existed as oxides, nitrides, and oxynitrides, while thermal treatment leads to oxidation of oxynitrides to oxides, and nitrides to the oxynitrides, respectively (Sanzhak et al 2018 ). Fig.…”
Section: Preparation Of Stainless Steel Catalystmentioning
With the awakening of environmental awareness, the importance of air quality to human health and the proper functioning of social mechanisms is becoming increasingly prominent. The low cost and high efficiency of catalytic technique makes it a natural choice for achieving deep air purification. Stainless steel alloys have demonstrated their full potential for application in a variety of catalytic fields. The diversity of 3D networks or fibrous structures increases the turbulence within the heterogeneous catalysis, balance the temperature distribution in the reaction bed and, in combination with a highly thermally conductive skeleton, avoid agglomeration and deactivation of the active components; corrosion resistance and thermal stability are adapted to highly endothermic/exothermic or corrosive reaction environments; oxide layers formed by bulk transition metals activated by thermal treatment or etching can significantly alter the physico-chemical properties between the substrate and active species, further improving the stability of stainless steel catalysts; suitable electronic conductivity can be applied to the electrothermal catalysis, which is expected to provide guidance for the reduction of intermittent emission exhausts and the storage of renewable energy. The current applications of stainless steel as catalyst or support in the air purification have covered soot particle capture and combustion, catalytic oxidation of VOCs, SCR, and air sterilization. This paper summarizes several preparation methods and presents the relationships between the preparation process and the activity, and reviews its application and the current status of research in atmospheric environmental management, proposing the advantages and challenges of the stainless steel-based catalysts.
In this publication the results of heterogeneous catalytic processes of different nature compounds oxidation in productive and ecological catalysis obtained in Institute for Sorption and Problems of Endoecology NAS of Ukraine during last 30-years are summarized. The problems of effective catalysts synthesis for these reactions and development of nontraditional preparation methods to catalysts technology are considered. The results obtained in investigation of saturated hydrocarbons (methane, ethane, propane, butane, pentane) partial oxidation in valuable products (formaldehyde, ethylene, propylene, maleic and phthalic anhydrides) are presented. The mechanisms of paraffins hydrocarbons transformation are presented. New approaches to effective catalysts preparation, which based on alternative methods (mechanochemistry, sonochemistry, barothernal synthesis, ionic implantation) using, for these processes are shown and the comparison of results obtained on synthesis catalysts with known literature data was realized. It was established that in most cases the catalysts prepared by us are more effective in different processes that known analogous catalysts. New schemes of maleic anhydride production in excess of n-butane in reaction mixture and phthalic anhydride from n-pentane with two catalysts in catalytuic bed were proposed. The process of ethanol oxidation to acetaldehyde was studied and very effective catalysts for this process realization were proposed. The synthesis of the catalysts for environment protection (total oxidation of H2S, CO and CO in hydrogen excess) is considered and it was shown that the developed catalysts don’t give in activity foreign analogues. The results obtained at catalysts preparation for photocatalytic degradation of different organic compounds, including herbicides and medical substances, in water medium are presented. The positive effects of the catalysts synthesis by nontradional methods (mechanochemistry and sonochemistry) for effective photocatalysts preparation are shown. The new perspective directions of catalytic oxidation processes and methods of the catalysts preparations are presented.
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