Redox catalysts based on amorphous porous carbons

Klepel, Olaf; Utgenannt, Stephan; Vormelchert, Carolin; König, Mark; Meißner, André; Hansen, Felix; Bölte, Jens-Henning; Sieber, Tim; Heinemann, Robert; Bron, Michael; Rokicińska, Anna; Jarczewski, Sebastian; Kuśtrowski, Piotr

doi:10.1016/j.micromeso.2021.111257

Microporous and Mesoporous Materials

2021

DOI: 10.1016/j.micromeso.2021.111257

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Redox catalysts based on amorphous porous carbons

Olaf Klepel

Stephan Utgenannt

Carolin Vormelchert

et al.

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Cited by 4 publications

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Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent

Kang,

Qin,

Long

et al. 2023

J Mater Sci

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Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent

Kang,

Qin,

Long

et al. 2023

J Mater Sci

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Liquid phase oxidation of cyclopentanone over metal-free carbon catalysts

Gašparovičová,

Králik,

Horváth

et al. 2024

Chem. Pap.

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Oxidation of cyclopentanone (CPO) was studied over metal-free carbon catalysts in solvent-free conditions. Norit SX plus (900 m2 g−1) and Vulcan XC72 (240 m2 g−1) were used as pristine materials. Catalysts were prepared by activation in nitrogen and by treatment with urea, calcined in nitrogen at 500 °C and 950 °C. SEM, EDX, XPS, X-ray powder diffraction, nitrogen adsorption–desorption isotherms, acid–base titration, FTIR and Raman techniques were used for characterization. Catalytic tests carried out at 0.45 MPa and 80–110 °C enabled to find the best results: 30% selectivity to glutaric acid (GA) and 3% to succinic acid at 25% conversion of CPO, over Vulcan type catalysts. A low activity, selectivity and strong deactivation of Norit type catalysts can be ascribed to a higher specific surface in a disordered arrangement providing a high concentration of unselective catalytic sites. A higher extent of side reactions can yield in higher molar mass products, which stick on the surface and block catalytic sites. Optimum amount of accessible planar domains, represented by graphene and/or graphitic plates with some disorders present in Vulcan type catalysts classified them superior to Norit catalysts. A redox reaction scheme of oxidation of CPO to GA is also proposed. Graphical abstract

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Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

Xing

Zhai

Chen

et al. 2023

Front. Chem. Sci. Eng.

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Redox catalysts based on amorphous porous carbons

Cited by 4 publications

References 41 publications

Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent

Thermal oxidation etched carbon fiber aerogels with hierarchical pore structure as high-performance oil adsorbent

Liquid phase oxidation of cyclopentanone over metal-free carbon catalysts

Insights into carbon-based materials for catalytic dehydrogenation of low-carbon alkanes and ethylbenzene

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