20 август 2021
Tsoncheva, T., Ivanova, R., Velinov, N., Kovacheva, D., Spassova, I., Karashanova, D., Petrov, N..
(
Николай Велинов;
)
Abstract
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, M?ssbauer 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.
SYMMETRY-BASEL, 13, 8, MDPIST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2021, ISSN:2073-8994, DOI:10.3390/sym13081532, Art. 1532. SJR (Scopus):0.385, JCR-IF (Web of Science):2.713 Q2 (Web of Science)
https://www.mdpi.com/2073-8994/13/8/1532
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