Effect of K<sup>+</sup> and Ca<sup>2+</sup> Cations on Structural Manganese(IV) Oxide for the Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid
Issued Date
2023-12-19
Resource Type
eISSN
24701343
Scopus ID
2-s2.0-85180071644
Journal Title
ACS Omega
Volume
8
Issue
50
Start Page
47846
End Page
47855
Rights Holder(s)
SCOPUS
Bibliographic Citation
ACS Omega Vol.8 No.50 (2023) , 47846-47855
Suggested Citation
Poonsawat T., Promcharoen P., Meechai T., Chuaitammakit L.C., Somsook E. Effect of K<sup>+</sup> and Ca<sup>2+</sup> Cations on Structural Manganese(IV) Oxide for the Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid. ACS Omega Vol.8 No.50 (2023) , 47846-47855. 47855. doi:10.1021/acsomega.3c06333 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/95724
Title
Effect of K<sup>+</sup> and Ca<sup>2+</sup> Cations on Structural Manganese(IV) Oxide for the Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid
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Abstract
The promising influences of K+ and Ca2+ ions in the development of effective MnO2 for the selective oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid (FDCA) were studied for the catalytic performance under a high-pressure reaction of aqueous O2 (0.5 MPa) in a basic system. Various oxidation states of manganese in MnO2 were able to accelerate the oxidation of 5-formyl-2-furancarboxylic acid to FDCA in the rate-determining step. The results were in good agreement that Ca2+ played a key role in the highest FDCA yield up to 85% due to the associated cations on the local coordination to enhance the high surface area and the electronic effect on the manganese ion. Both K-MnO2 and Ca-MnO2 catalysts showed excellent catalytic activities without a significant change in the efficiency in the reusability experiments.