Ruthenium on Alkali-Exfoliated Ti-3(Al0.8Sn0.2)C-2 MAX Phase Catalyses Reduction of 4-Nitroaniline with Ammonia Borane

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922156" target="_blank" >RIV/60461373:22310/21:43922156 - isvavai.cz</a>

Výsledek na webu

<a href="https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/cctc.202100158" target="_blank" >https://chemistry-europe.onlinelibrary.wiley.com/doi/full/10.1002/cctc.202100158</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/cctc.202100158" target="_blank" >10.1002/cctc.202100158</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Ruthenium on Alkali-Exfoliated Ti-3(Al0.8Sn0.2)C-2 MAX Phase Catalyses Reduction of 4-Nitroaniline with Ammonia Borane

Popis výsledku v původním jazyce

MAX phases are gaining increased interest in catalysis, typically for high-temperature applications. They can also be delaminated into 2D-structures, so-called MXenes, enabling better accessibility and the tuning of active site surroundings. Here we present an analogous yet different approach, using an alkaline treatment to prepare a Ti-3(Al0.8Sn0.2)C-2 MAX phase derivative, with an open, disordered structure. This new material, which is missing most of the larger interlayer spacing, is a good support for ruthenium particles (1.6 nm diameter). Ru on disordered MAX phase catalyses both ammonia borane hydrolysis (TOF=582 min(-1), 30 degrees C) and the reduction of 4-nitroaniline (TOF=13 min(-1), 45 degrees C). Using the former as a benchmark reaction, we show that the open disordered structure of the support promotes catalytic activity. The boost in reactivity is related to a metal-support interaction, improving the activity of metallic ruthenium. We also show here, for the first time, that supported Ru is a good catalyst for reducing nitroaniline with ammonia borane. Overall, our results reveal that disordered MAX-derivatives are promising as catalyst supports, owing to their potential for tuning the electronic properties at the metal active sites.

Název v anglickém jazyce

Ruthenium on Alkali-Exfoliated Ti-3(Al0.8Sn0.2)C-2 MAX Phase Catalyses Reduction of 4-Nitroaniline with Ammonia Borane

Popis výsledku anglicky

MAX phases are gaining increased interest in catalysis, typically for high-temperature applications. They can also be delaminated into 2D-structures, so-called MXenes, enabling better accessibility and the tuning of active site surroundings. Here we present an analogous yet different approach, using an alkaline treatment to prepare a Ti-3(Al0.8Sn0.2)C-2 MAX phase derivative, with an open, disordered structure. This new material, which is missing most of the larger interlayer spacing, is a good support for ruthenium particles (1.6 nm diameter). Ru on disordered MAX phase catalyses both ammonia borane hydrolysis (TOF=582 min(-1), 30 degrees C) and the reduction of 4-nitroaniline (TOF=13 min(-1), 45 degrees C). Using the former as a benchmark reaction, we show that the open disordered structure of the support promotes catalytic activity. The boost in reactivity is related to a metal-support interaction, improving the activity of metallic ruthenium. We also show here, for the first time, that supported Ru is a good catalyst for reducing nitroaniline with ammonia borane. Overall, our results reveal that disordered MAX-derivatives are promising as catalyst supports, owing to their potential for tuning the electronic properties at the metal active sites.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/GC20-16124J" target="_blank" >GC20-16124J: Dvojdimenzionální vrstevnaté dichalkogenidy přechodných kovů / nanostrukturované uhlíkové kompozity pro aplikace na elektrochemické uchovávání energie</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

ChemCatChem

ISSN

1867-3880

e-ISSN

—

Svazek periodika

13

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

3470-3478

Kód UT WoS článku

000664846200001

EID výsledku v databázi Scopus

2-s2.0-85108362270