Concentration of ions Co(II), Ni(II) at the Tokem-250 carboxylic cation exchange for catalysts development

Production of TiO2/Cr2O3 Composite Material in the Spherical Form

“…Using the example of metal oxide composites of YBa 2 Cu 3 O 7−δ and TiO 2 -SiO 2 composites production in works [18][19][20], it was shown that ion exchange resins could act as a template. Earlier [5,21], it was indicated that ion exchange resins could be used as a template for the preparation of catalytically active oxide composites TiO 2 −SiO 2 /Cr 2 O 3 and TiO 2 −SiO 2 /Co 3 O 4 with a spherical shape of aglomerates.…”

“…This may be due to the fact that the TOKEM-250 cation exchanger used as an organic matrix was used in sodium form and as a result of sorption, not all sodium ions were replaced by chromium (III) ions. According to researches of such systems [5,21,23] and based on XRD data and micro-X-ray spectral analysis, we assume that the samples obtained are oxides TiO 2 and Cr 2 O 3 .…”