A combination of plasma jet and magnetron sputtering - a new method for preparing thin Ni-Co-Mn oxide coatings on stainless steel meshes and their efficiency in the total oxidation of volatile organic compounds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F24%3A00600614" target="_blank" >RIV/67985858:_____/24:00600614 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/24:00600614

Výsledek na webu

<a href="https://pubs.acs.org/doi/epdf/10.1021/acs.iecr.4c02299?ref=article_openPDF" target="_blank" >https://pubs.acs.org/doi/epdf/10.1021/acs.iecr.4c02299?ref=article_openPDF</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.iecr.4c02299" target="_blank" >10.1021/acs.iecr.4c02299</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A combination of plasma jet and magnetron sputtering - a new method for preparing thin Ni-Co-Mn oxide coatings on stainless steel meshes and their efficiency in the total oxidation of volatile organic compounds

Popis výsledku v původním jazyce

For the first time, ternary Ni-Co-Mn oxide catalysts were prepared by a combination of sputtering techniques. Thin coatings of Ni-Co-Mn oxides were deposited on stainless steel meshes using a new method that involved a combination of plasma jet sputtering from a hollow Ni-Co cathode and simultaneous magnetron sputtering of manganese. The resulting thin-film catalysts are suitable for various oxidation reactions, such as total oxidation of volatile organic compounds. The catalysts with a Ni:Co molar ratio of 1:1 and varying amounts of Mn were compared with the binary Ni-Co oxide catalyst in terms of their ability to oxidize ethanol and toluene. The powder XRD showed spinel-type mixed oxides and NiO-like ones in the oxide coatings. The TPR profiles revealed easier reducibility of the Ni-Co-Mn oxides compared to the Ni-Co oxide and the synergistic effect of Mn addition. The Ni-Co-Mn oxide catalysts exhibited higher catalytic activity than the binary catalysts due to mixed oxide phases with disordered structure and the presence of Mn4+. The catalysts showing the highest activity in the oxidation of ethanol and toluene were prepared at low plasma jet energy input and high magnetron sputtering energy input. The thin-film catalysts prepared by this method have a primary advantage over pelletized catalysts due to their extremely low contents of active Ni, Co, and Mn oxides in the catalyst bed and negligible internal diffusion effects. The proposed novel method of plasma sputtering of Ni and Co components from a hollow cathode, combined with simultaneous magnetron sputtering of Mn, has the potential for industrial application. It allows the preparation of ternary catalysts that are more active than the previously reported binary catalysts. Moreover, the preparation procedure can be applied to other transition metal oxides, not just Ni-Co-Mn.

Název v anglickém jazyce

A combination of plasma jet and magnetron sputtering - a new method for preparing thin Ni-Co-Mn oxide coatings on stainless steel meshes and their efficiency in the total oxidation of volatile organic compounds

Popis výsledku anglicky

For the first time, ternary Ni-Co-Mn oxide catalysts were prepared by a combination of sputtering techniques. Thin coatings of Ni-Co-Mn oxides were deposited on stainless steel meshes using a new method that involved a combination of plasma jet sputtering from a hollow Ni-Co cathode and simultaneous magnetron sputtering of manganese. The resulting thin-film catalysts are suitable for various oxidation reactions, such as total oxidation of volatile organic compounds. The catalysts with a Ni:Co molar ratio of 1:1 and varying amounts of Mn were compared with the binary Ni-Co oxide catalyst in terms of their ability to oxidize ethanol and toluene. The powder XRD showed spinel-type mixed oxides and NiO-like ones in the oxide coatings. The TPR profiles revealed easier reducibility of the Ni-Co-Mn oxides compared to the Ni-Co oxide and the synergistic effect of Mn addition. The Ni-Co-Mn oxide catalysts exhibited higher catalytic activity than the binary catalysts due to mixed oxide phases with disordered structure and the presence of Mn4+. The catalysts showing the highest activity in the oxidation of ethanol and toluene were prepared at low plasma jet energy input and high magnetron sputtering energy input. The thin-film catalysts prepared by this method have a primary advantage over pelletized catalysts due to their extremely low contents of active Ni, Co, and Mn oxides in the catalyst bed and negligible internal diffusion effects. The proposed novel method of plasma sputtering of Ni and Co components from a hollow cathode, combined with simultaneous magnetron sputtering of Mn, has the potential for industrial application. It allows the preparation of ternary catalysts that are more active than the previously reported binary catalysts. Moreover, the preparation procedure can be applied to other transition metal oxides, not just Ni-Co-Mn.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA21-04477S" target="_blank" >GA21-04477S: Inovativní plazmově-chemická a chemická syntéza katalyzátorů na bázi směsných oxidů niklu pro oxidaci těkavých organických polutantů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

1520-5045

Svazek periodika

63

Číslo periodika v rámci svazku

44

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

18759-18772

Kód UT WoS článku

001340150900001

EID výsledku v databázi Scopus

2-s2.0-85207301892