Understanding of the key factors determining the activity and selectivity of cuzn catalysts in hydrogenolysis of alkyl esters to alcohols

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43923583" target="_blank" >RIV/60461373:22320/21:43923583 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22350/21:43923583

Result on the web

<a href="https://www.mdpi.com/2073-4344/11/11/1417" target="_blank" >https://www.mdpi.com/2073-4344/11/11/1417</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/catal11111417" target="_blank" >10.3390/catal11111417</a>

Result language

angličtina

Original language name

Understanding of the key factors determining the activity and selectivity of cuzn catalysts in hydrogenolysis of alkyl esters to alcohols

Original language description

CuZn catalysts are perspective catalysts for esters hydrogenolysis, but more knowledge is needed to optimize their catalytic performance. In this work, we consider the impact of CuZn catalysts composition on their structure, activity, selectivity, and stability in esters hydrogenolysis. Four catalysts with various Cu/Zn ratio were synthesized by a co-precipitation and characterized in as-prepared, calcined, reduced, and spent state by XRF, XRD, N2 physisorption, CO2-TPD, NH3-TPD, and N2O chemisorption. XRD data revealed the effect of the composition on the size of Cu and ZnO particles. The catalytic performance was investigated using an autoclave. All catalysts exhibited high methyl hexanoate conversion about 48–60% after 3 h but their activity and selectivity were found to be dependent on Cu/Zn ratio. The conversion of methyl hexanoate and hexyl hexanoate was compared to explain the observed product selectivity. Moreover, the catalysts stability was investigated in three consecutive reaction cycles and correlated with changes in the size of constit-uent particles. Moreover, when different esters were tested, a slight decrease in conversion and increase in alcohol selectivity with a growth in molecule size was observed. Obtained results allow making a conclusion about the optimal composition that provides the good performance of CuZn catalysts in ester hydrogenolysis.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

<a href="/en/project/LTACH19017" target="_blank" >LTACH19017: Cooperative R&D of Innovative catalytic upgrading and technology for efficient transformation of vegetable oil to clean fuels</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

Catalysts

ISSN

2073-4344

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

20

Pages from-to

"číslo článku 1147"

UT code for WoS article

000726855000001

EID of the result in the Scopus database

2-s2.0-85119625901