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Abstrakt
In this study, the catalytic performance of Ti3C2 MXene materials in the reaction of α-pinene isomerization was demonstrated. The influence of etching agents (HF, HF/H2SO4, and HF/HCl; weight ratios of mixed acids: 1 : 3, 1 : 4, and 1 : 5) on removing Al atoms from MAX phase, creation of an accordion-like structure typical for MXenes and catalytic activity of the produced samples have been revealed. The MXene HF obtained by MAX phase HF treatment exhibited the highest activity (conversion of α-pinene 74.65 mol%), while materials produced with the mixed acids (HF/H2SO4 and HF/HCl) showed a significant reduction in the conversion of α-pinene (on average about 28-fold). However, these last samples displayed an increase of about 10 mol% in the selectivity to the most desirable product-camphene. The high activity of MXene HF is a result of a high concentration of acid sites (11.62 mmol g−1) – the concentration of acid sites in the samples obtained by MAX phase mixed acids treatment was about 2.5–5.5 times smaller. This work proposes possible mechanisms for the α-pinene isomerization reaction on the MXene HF and on the MXene HF/H2SO4 X : Y and MXene HF/HCl X : Y in connection with their structure.
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Informacje szczegółowe
- Kategoria:
- Publikacja w czasopiśmie
- Typ:
- Publikacja w czasopiśmie
- Opublikowano w:
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RSC Advances
nr 13,
strony 30281 - 30292,
ISSN: 2046-2069 - Rok wydania:
- 2023
- DOI:
- Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1039/d3ra05055f
- Źródła finansowania:
- Weryfikacja:
- Brak weryfikacji
Powiązane datasety
- dane badawcze TGA data of MXenes catalysts
- dane badawcze Acid site concentrations of the MXenes samples
- dane badawcze XRD patterns of MXenes catalysts
- dane badawcze Adsorption and desorption of N2 measurement of MXenes catalysts
- dane badawcze XPS data of MXene catalyst
- dane badawcze GC Chromatograms for isomerization of alpha-pinene
- dane badawcze Raman spectra of MXenes catalysts
- dane badawcze SEM images of MXene catalysts
- dane badawcze XRD patterns of MXenes ashes obtained after TGA measurement
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