caa a22 4500 463234170 CHVBK 20180405153251.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1159-4 doi (NATIONALLICENCE)springer-10.1007/s10853-006-1159-4 Spectroscopic characterization of tungstated zirconia prepared by equilibrium adsorption from hydrogen peroxide solutions of tungsten(VI) precursors [Elektronische Daten] [Margarita Kantcheva, Cevryie Koz] Two series of WO x /ZrO2 samples are prepared by equilibrium adsorption from H2O2 solutions at pH 1.8 containing two different precursor anions, [W2O3(O2)4(H2O)2]2− and [H2W12O40]6−. The starting material is amorphous zirconium oxyhydroxide. The maximum W densities obtained are larger than that reported in the literature for systems synthesized by the same method using aqueous non-peroxide solutions. In the case of the metatungstate precursor, this increase is attributed to the generation of additional anchoring sites by interaction between the amorphous support and H2O2. The high uptake achieved when the peroxo complex is used as a precursor is a result of both the ZrO x (OH)4-2x -H2O2 interaction and low nuclearity of the adsorbing anion. The materials are characterized by XRD, DR-UV-vis, Micro-Raman and FT-IR spectroscopy. The surface acidities of samples with identical W loading prepared by equilibrium adsorption from the [H2W12O40]6−-H2O2 system and by impregnation with aqueous solution of ammonium metatungstate are investigated by FT-IR spectroscopy of CO adsorbed at 80K. Springer Science+Business Media, LLC, 2007 Kantcheva Margarita Laboratory for Advanced Functional materials, Department of Chemistry, Bilkent University, 06800, Bilkent, Ankara, Turkey aut Koz Cevryie Laboratory for Advanced Functional materials, Department of Chemistry, Bilkent University, 06800, Bilkent, Ankara, Turkey aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6074-6086 0022-2461 42:15<6074 2007 42 10853 https://doi.org/10.1007/s10853-006-1159-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1159-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kantcheva Margarita Laboratory for Advanced Functional materials, Department of Chemistry, Bilkent University, 06800, Bilkent, Ankara, Turkey aut NATIONALLICENCE 700 1- Koz Cevryie Laboratory for Advanced Functional materials, Department of Chemistry, Bilkent University, 06800, Bilkent, Ankara, Turkey aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6074-6086 0022-2461 42:15<6074 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer