Platinum nanoparticles on 3D graphene-like zeolite-templated carbon for benzene hydrogenation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F23%3A00574892" target="_blank" >RIV/61388955:_____/23:00574892 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/23:39920571

Výsledek na webu

<a href="https://hdl.handle.net/11104/0344820" target="_blank" >https://hdl.handle.net/11104/0344820</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3cy00617d" target="_blank" >10.1039/d3cy00617d</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Platinum nanoparticles on 3D graphene-like zeolite-templated carbon for benzene hydrogenation

Popis výsledku v původním jazyce

The concentration and dispersion of metal clusters in metal-supported catalysts are essential for the performance of hydrogenation catalysts. In this study, very high concentrations (& SIM,25 wt%) of well-dispersed Pt nanoparticles of the face-centred cubic crystal structure with a mean diameter of & SIM,1.7 nm were prepared in zeolite-templated carbon (Pt/Y-carbon). The defined 3D porous structure of Pt/Y-carbon formed by nanocasting of the zeolitic channel system and characterised by a specific surface area (& SIM,2440 m(2) g(-1)) comparable to the theoretical surface area of graphene and accessible through 3D organized pores accommodates Pt nanoparticles with high dispersion and specific activity in hydrogenation of benzene to cyclohexane at Pt loadings from 3 to 25 wt%. It provides a multiple increase in the concentration of active Pt sites and a corresponding increase in the TOF and conversions in the hydrogenation reaction. The productivity of the most active catalyst reaches a value of 1.06 x 10(-3) mol g(cat)(-1) s(-1). The study demonstrates a novel concept for the creation of catalysts with a very high concentration of metal clusters dispersed on the support with readily accessible 3D organized pores for reactions catalysed heterogeneously by supported metal nanoparticles.

Název v anglickém jazyce

Platinum nanoparticles on 3D graphene-like zeolite-templated carbon for benzene hydrogenation

Popis výsledku anglicky

The concentration and dispersion of metal clusters in metal-supported catalysts are essential for the performance of hydrogenation catalysts. In this study, very high concentrations (& SIM,25 wt%) of well-dispersed Pt nanoparticles of the face-centred cubic crystal structure with a mean diameter of & SIM,1.7 nm were prepared in zeolite-templated carbon (Pt/Y-carbon). The defined 3D porous structure of Pt/Y-carbon formed by nanocasting of the zeolitic channel system and characterised by a specific surface area (& SIM,2440 m(2) g(-1)) comparable to the theoretical surface area of graphene and accessible through 3D organized pores accommodates Pt nanoparticles with high dispersion and specific activity in hydrogenation of benzene to cyclohexane at Pt loadings from 3 to 25 wt%. It provides a multiple increase in the concentration of active Pt sites and a corresponding increase in the TOF and conversions in the hydrogenation reaction. The productivity of the most active catalyst reaches a value of 1.06 x 10(-3) mol g(cat)(-1) s(-1). The study demonstrates a novel concept for the creation of catalysts with a very high concentration of metal clusters dispersed on the support with readily accessible 3D organized pores for reactions catalysed heterogeneously by supported metal nanoparticles.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Catalysis Science &Technology

ISSN

2044-4753

e-ISSN

2044-4761

Svazek periodika

13

Číslo periodika v rámci svazku

JUL 2023

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

5120-5130

Kód UT WoS článku

001042273000001

EID výsledku v databázi Scopus

2-s2.0-85168830012