Design and Catalytic Behaviour of Hosted in Activated Carbon Foam CoxZn1xFe2O4 Ferrites
| Autor: | Radostina Ivanova, Daniela Karashanova, Nartzislav Petrov, Tanya Tsoncheva, Nikolay Velinov, Daniela Kovacheva, Ivanka Spassova |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) General Mathematics Carbon nanofoam chemistry.chemical_element engineering.material Catalysis chemistry.chemical_compound QA1-939 Computer Science (miscellaneous) medicine activated carbon foam Texture (crystalline) cobalt- and zinc-substituted ferrites Spinel chemistry Chemical engineering Chemistry (miscellaneous) methanol decomposition engineering Methanol Carbon Mathematics Activated carbon medicine.drug Syngas |
| Zdroj: | Symmetry Volume 13 Issue 8 Symmetry, Vol 13, Iss 1532, p 1532 (2021) |
| Popis: | Carbon foams with different surface functionality and tailored texture characteristics were prepared from mixtures containing coal tar pitch and furfural in different proportions. The obtained materials were used as a host matrix for the preparation of zinc- and cobalt-mixed ferrite nanoparticles. The texture, morphology, phase composition, and the related redox and catalytic properties of the obtained composites were characterized by low-temperature nitrogen physisorption, XRD, SEM, HRTEM, FTIR, Mössbauer spectroscopy, TPR and catalytic decomposition of methanol to syngas. The impact of the carbon support on the formation of Co- and Zn-mixed ferrites was discussed in detail using KIT-6 silica-based modifications as reference samples. The catalytic behavior of the ferrites was considered in a complex relation to their composition, morphology, location in the porous matrix and metal ions distribution in the spinel sub-lattices. The higher amount of furfural in the carbon foam precursor promoted the formation of cobalt-rich, more accessible and highly active methanol decomposition to syngas spinel particles. |
| Databáze: | OpenAIRE |
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