Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F24%3A00578834" target="_blank" >RIV/61388955:_____/24:00578834 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0347751" target="_blank" >https://hdl.handle.net/11104/0347751</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.apcatb.2023.123455" target="_blank" >10.1016/j.apcatb.2023.123455</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?

Popis výsledku v původním jazyce

Our study presents a comprehensive approach for the selective oxidation of glucose to glucaric acid (GA) by heterogeneous catalysis. We have synthesized and characterized Au/ZrO2, AuCu/ZrO2 and AuPt/ZrO2 catalysts using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and oxygen pulse chemisorption (OPS) techniques. Combining experimental observations with in-depth density functional theory (DFT) studies, we found that bimetallic catalysts form alloys, which exhibit different characteristics than monometallic counterparts for the given reaction. We performed batch reactions, varying temperature and oxygen pressure, and used the data to construct a predictive microkinetic model. As it turned out, AuPt/ZrO2 showed the highest selectivity, yielding 32% of GA at 100 °C and 30 barg O2. Our results provide valuable insights for the developing of efficient catalysts and point out the bottlenecks for the oxidation of glucose to GA.

Název v anglickém jazyce

Selective glucose oxidation to glucaric acid using bimetallic catalysts: Lattice expansion or electronic structure effect?

Popis výsledku anglicky

Our study presents a comprehensive approach for the selective oxidation of glucose to glucaric acid (GA) by heterogeneous catalysis. We have synthesized and characterized Au/ZrO2, AuCu/ZrO2 and AuPt/ZrO2 catalysts using X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and oxygen pulse chemisorption (OPS) techniques. Combining experimental observations with in-depth density functional theory (DFT) studies, we found that bimetallic catalysts form alloys, which exhibit different characteristics than monometallic counterparts for the given reaction. We performed batch reactions, varying temperature and oxygen pressure, and used the data to construct a predictive microkinetic model. As it turned out, AuPt/ZrO2 showed the highest selectivity, yielding 32% of GA at 100 °C and 30 barg O2. Our results provide valuable insights for the developing of efficient catalysts and point out the bottlenecks for the oxidation of glucose to GA.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GF21-48595L" target="_blank" >GF21-48595L: Katalytická přeměna zbytkové biomasy na kyselinu glukarovou. Od víceúrovňového modelování až k sestavení funkčního reaktoru</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Applied Catalysis B - Environmental

ISSN

0926-3373

e-ISSN

1873-3883

Svazek periodika

343

Číslo periodika v rámci svazku

APR 2024

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

123455

Kód UT WoS článku

001118493200001

EID výsledku v databázi Scopus

2-s2.0-85178013559