Do metal-oxide promoters of Cu hydrogenolysis catalysts affect the Cu intrinsic activity?

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F20%3A43920340" target="_blank" >RIV/60461373:22320/20:43920340 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22350/20:43920340 RIV/00216275:25310/20:39916659 RIV/61989100:27710/20:10245596
Result on the web
<a href="https://doi.org/10.1016/j.apcata.2020.117889" target="_blank" >https://doi.org/10.1016/j.apcata.2020.117889</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apcata.2020.117889" target="_blank" >10.1016/j.apcata.2020.117889</a>

Result language
angličtina
Original language name
Do metal-oxide promoters of Cu hydrogenolysis catalysts affect the Cu intrinsic activity?
Original language description
The well-established ester hydrogenolysis process has to be further improved to reduce its high energy demand and to replace used Adkins CuCr catalysts by chromium-free alternatives. In this study, the copper-based catalyst was modified by ZnO, ZnO with Al2O3 or MgO to elucidate the metal-oxide influence on catalyst structure, activity, performance and stability in ester hydrogenolysis. The catalysts composition, structure and physicochemical properties were examined by AAS, XRD, TPR, BET, N2O-RFC, TGA-MS, NH3-TPD and CO2-TPD. It was confirmed that copper itself possesses high intrinsic activity for ester hydrogenolysis but the unpromoted copper species were very unstable. All used metal oxides were proven to be structural promoters stabilizing copper species and increasing the number of active sites. Consequently, they enhanced remarkably catalyst performance in dimethyl adipate conversion despite the decreased intrinsic activity of Cu active sites. All prepared catalysts outperformed a commercial CuCr catalyst in dimethyl adipate hydrogenolysis. © 2020 Elsevier B.V.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
<a href="/en/project/GA17-05704S" target="_blank" >GA17-05704S: Investigation and optimization of promoted CuZnAl hydrogenation catalysts</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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