Towards efficient Cu/ZnO catalysts for ester hydrogenolysis: The role of synthesis method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43922239" target="_blank" >RIV/60461373:22320/21:43922239 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22350/21:43922239

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S092058612100420X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S092058612100420X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcata.2021.118320" target="_blank" >10.1016/j.apcata.2021.118320</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards efficient Cu/ZnO catalysts for ester hydrogenolysis: The role of synthesis method

Popis výsledku v původním jazyce

Cu/ZnO catalysts represent an environmentally friendly alternative to Adkins catalysts used for ester hydrogenolysis. Cu/ZnO are mostly synthesized by co-precipitation (COP); however, other synthesis methods may help to obtain small highly dispersed Cu crystallites advantageous for catalyst activity. A comparative study on the effect of synthesis method on Cu/ZnO catalysts properties and activity is missing. Thus, we synthesized 8 wt% Cu/ZnO catalysts by five methods (COP, deposition-precipitation (DP), chemisorption-hydrolysis (CH), incipient wetness (IWI) and wet impregnation (WI)), characterized and tested them in dimethyl adipate hydrogenolysis. The CH-prepared catalyst was prone to Cu sintering, which impaired its performance. IWI led to large Cu nanoparticles, pore blocking and poor catalytic performance. COP and DP resulted in the smallest Cu nanoparticles (13-14 nm), largest Cu surface area (3.9-4.2 m(2) g(cat)(-1)) and specific surface area (40-43 m(2) g(cat)(-1)) reflected in their superior catalytic activity making DP a good alternative to COP to prepare active Cu/ZnO catalysts.

Název v anglickém jazyce

Towards efficient Cu/ZnO catalysts for ester hydrogenolysis: The role of synthesis method

Popis výsledku anglicky

Cu/ZnO catalysts represent an environmentally friendly alternative to Adkins catalysts used for ester hydrogenolysis. Cu/ZnO are mostly synthesized by co-precipitation (COP); however, other synthesis methods may help to obtain small highly dispersed Cu crystallites advantageous for catalyst activity. A comparative study on the effect of synthesis method on Cu/ZnO catalysts properties and activity is missing. Thus, we synthesized 8 wt% Cu/ZnO catalysts by five methods (COP, deposition-precipitation (DP), chemisorption-hydrolysis (CH), incipient wetness (IWI) and wet impregnation (WI)), characterized and tested them in dimethyl adipate hydrogenolysis. The CH-prepared catalyst was prone to Cu sintering, which impaired its performance. IWI led to large Cu nanoparticles, pore blocking and poor catalytic performance. COP and DP resulted in the smallest Cu nanoparticles (13-14 nm), largest Cu surface area (3.9-4.2 m(2) g(cat)(-1)) and specific surface area (40-43 m(2) g(cat)(-1)) reflected in their superior catalytic activity making DP a good alternative to COP to prepare active Cu/ZnO catalysts.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20702 - Petroleum engineering (fuel, oils)

Projekt

<a href="/cs/project/GA20-28093S" target="_blank" >GA20-28093S: Nosičové hydrogenolýzní katalyzátory na bázi mědi</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

APPLIED CATALYSIS A-GENERAL

ISSN

0926-860X

e-ISSN

—

Svazek periodika

624

Číslo periodika v rámci svazku

srpen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

000702636900006

EID výsledku v databázi Scopus

2-s2.0-85112756104