Valorization of coal treatment residues as a host matrix of nanosized nickel, copper and zinc ferrites
| Autor: | Daniela Paneva, Nikolay Velinov, Daniela Kovacheva, Radostina Ivanova, Boiko Tsyntsarski, Tanya Tsoncheva, Nartzislav Petrov, Ivanka Spassova |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010405 organic chemistry chemistry.chemical_element Zinc 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences chemistry.chemical_compound Nickel chemistry Chemical engineering medicine Methanol Physical and Theoretical Chemistry Mesoporous material Carbon Pyrolysis Activated carbon medicine.drug |
| Zdroj: | Reaction Kinetics, Mechanisms and Catalysis. 127:691-703 |
| ISSN: | 1878-5204 1878-5190 |
| Popis: | High quality activated carbon was prepared using by-products from the pyrolysis of low rank coals as a precursor. The obtained carbon material was applied as a host matrix of nanosized MFe2O4 ferrites (M = Ni, Cu or Zn). XRD, Mossbauer and TPR analyses were performed for samples characterization and their catalytic behavior in methanol decomposition as a source of hydrogen was tested. In contrast to the reference mesoporous KIT-6 silica based analogues, the active phase in the carbon modifications was more accessible for the reactants and represented a complex mixture of metals, alloys, substituted magnetite and finely dispersed ferrites, which ensured their higher catalytic activity in methanol decomposition. |
| Databáze: | OpenAIRE |
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