Iron modified titanium–hafnium binary oxides as catalysts in total oxidation of ethyl acetate

0459742 - ÚACH 2017 RIV NL eng J - Journal Article
Tsoncheva, T. - Ivanova, R. - Henych, Jiří - Velinov, N. - Kormunda, M. - Dimitrov, M. - Paneva, D. - Slušná, Michaela - Mitov, I. - Štengl, Václav
Iron modified titanium–hafnium binary oxides as catalysts in total oxidation of ethyl acetate.
Catalysis Communication. Roč. 81, JUN (2016), s. 14-19. ISSN 1566-7367. E-ISSN 1873-3905
R&D Projects: GA MŠMT LM2015073
Institutional support: RVO:61388980
Keywords : Titania–hafnia binary oxides * Iron modifications * Support effect * Ethyl acetate oxydation
Subject RIV: CA - Inorganic Chemistry
Impact factor: 3.330, year: 2016

Multicomponent iron-titanium-hafnium oxide materials with different compositions were prepared by combination of homogeneous precipitation with urea and incipient wetness impregnation techniques and tested as catalysts for ethyl acetate oxidation as representative VOCs. Nitrogen physisorption, XRD, Raman, UV-Vis, XPS, Mössbauer spectroscopy and TPR analyses reveal co-existence of substituted FexTi1 - xO2 oxide, finely dispersed iron oxide species with supper paramagnetic behavior and well crystallized α-Fe2O3 particles, which relative part depends on hafnium content in titania lattice. The effect of phase composition on the catalytic behavior of these materials in ethyl acetate oxidation was discussed.
Permanent Link: http://hdl.handle.net/11104/0259902