Valorization of coal treatment residues as a host matrix of nanosized nickel, copper and zinc ferrites.

Autor: Tsoncheva, Tanya, Spassova, Ivanka, Ivanova, Radostina, Kovacheva, Daniela, Paneva, Daniela, Velinov, Nikolay, Tsyntsarski, Boiko, Petrov, Nartzislav
Zdroj: Reaction Kinetics, Mechanisms & Catalysis; Aug2019, Vol. 127 Issue 2, p691-703, 13p
Abstrakt: 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, Mössbauer 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: