The use of highly polar additives to reduce the degradation of Cu/ZnO/ Al2O3 catalysts during the gas phase hydrogenation of CO2 to methanol and CO

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F25%3A00638894" target="_blank" >RIV/61388955:_____/25:00638894 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/25:39923215

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0021951725004506?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0021951725004506?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jcat.2025.116384" target="_blank" >10.1016/j.jcat.2025.116384</a>

Result language

angličtina

Original language name

The use of highly polar additives to reduce the degradation of Cu/ZnO/ Al2O3 catalysts during the gas phase hydrogenation of CO2 to methanol and CO

Original language description

The impact of catalyst deactivation due to sintering on the activity and properties of the Cu/ZnO/Al2O3 system in CO2 hydrogenation to methanol was systematically investigated. Additionally, the effects of various additives on methanol yield and catalyst stability during CO2/H2 hydrogenation were evaluated. Additives such as methanol were confirmed to enhance catalytic activity, while components with high dipole moments exhibited a poisoning effect. Interestingly, despite their deactivating influence on activity, these polar additives significantly improved catalyst stability. It is presumed that highly polar species adsorb onto the catalyst surface, displacing water that would otherwise promote crystal growth of copper and zinc oxides, leading to deactivation. A combined additive strategy using methanol (to boost activity) and propylene carbonate (to enhance stability) offers a novel approach to significantly slow down Cu/ZnO/Al2O3 catalyst deactivation during gas-phase CO2 hydrogenation, without compromising initial activity compared to conventional additive-free systems. Thus, catalyst stability can be effectively improved through the addition of appropriate components to the feed, without sacrificing reaction rate.

Czech name

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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

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Catalysis

ISSN

0021-9517

e-ISSN

1090-2694

Volume of the periodical

451

Issue of the periodical within the volume

NOV 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

116384

UT code for WoS article

001561755400001

EID of the result in the Scopus database

2-s2.0-105014106437