Study of the adsorption of phenolics and furanics on the surface of Ni-Cu catalysts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10259364" target="_blank" >RIV/61989100:27710/25:10259364 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22320/25:43932290

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2468823125006170#sec0019" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2468823125006170#sec0019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mcat.2025.115431" target="_blank" >10.1016/j.mcat.2025.115431</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Study of the adsorption of phenolics and furanics on the surface of Ni-Cu catalysts

Popis výsledku v původním jazyce

Paper provides a comprehensive study of Ni-Cu catalysts on alumina, focusing on the effects of metal loading, reduction temperatures, and bimetallic interactions on catalyst properties and adsorption behaviour of model organic molecules. Introduction of metal reduces catalyst surface area. Low Cu loadings promote formation of isolated Cu sites, higher result in large CuO clusters. Ni catalysts have composition consisting of a mixture of NiO, NiO-like, and spinel species and the surface is primarily covered by NiO. Bimetallic Ni-Cu catalysts reveal Cu enhanced hydrogenation ability and reducibility. Acidity, primarily originating from alumina, decreases with increasing metal loading, however increasing nickel loading induces new type of sites capable of decomposing NH3. Reduced acidity limits anisole and guaiacol adsorption, while the presence of Cu provides additional adsorption sites for furfuryl alcohol. Organics exhibit distinct adsorption modes with following desorption and/ or decomposition during thermal heating influenced by metal loading, catalyst composition and organics type. Incorporating Ni and Cu affects coke deposits: the most deposits are formed on alumina after guaiacol adsorption, while anisole leaves no carbonaceous residues. The study highlights the importance of reduction conditions on catalytic performance, advocating further research on adsorption under reaction-like conditions to understand the catalysts&apos; behaviour in practical applications.

Název v anglickém jazyce

Study of the adsorption of phenolics and furanics on the surface of Ni-Cu catalysts

Popis výsledku anglicky

Paper provides a comprehensive study of Ni-Cu catalysts on alumina, focusing on the effects of metal loading, reduction temperatures, and bimetallic interactions on catalyst properties and adsorption behaviour of model organic molecules. Introduction of metal reduces catalyst surface area. Low Cu loadings promote formation of isolated Cu sites, higher result in large CuO clusters. Ni catalysts have composition consisting of a mixture of NiO, NiO-like, and spinel species and the surface is primarily covered by NiO. Bimetallic Ni-Cu catalysts reveal Cu enhanced hydrogenation ability and reducibility. Acidity, primarily originating from alumina, decreases with increasing metal loading, however increasing nickel loading induces new type of sites capable of decomposing NH3. Reduced acidity limits anisole and guaiacol adsorption, while the presence of Cu provides additional adsorption sites for furfuryl alcohol. Organics exhibit distinct adsorption modes with following desorption and/ or decomposition during thermal heating influenced by metal loading, catalyst composition and organics type. Incorporating Ni and Cu affects coke deposits: the most deposits are formed on alumina after guaiacol adsorption, while anisole leaves no carbonaceous residues. The study highlights the importance of reduction conditions on catalytic performance, advocating further research on adsorption under reaction-like conditions to understand the catalysts&apos; behaviour in practical applications.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA22-12925S" target="_blank" >GA22-12925S: Studium klíčových faktorů ovlivňujících hydrogenaci/deoxygenaci směsí kyslíkatých látek</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Molecular Catalysis

ISSN

2468-8231

e-ISSN

2468-8231

Svazek periodika

586

Číslo periodika v rámci svazku

November 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

20

Strana od-do

115431

Kód UT WoS článku

001559486800003

EID výsledku v databázi Scopus

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