Synthesis, Properties, and Pyrolysis of Organoalumoxanes Modified with Refractory Metals

• Published in: Russian journal of general chemistry Vol. 93; no. 11; pp. 2831 - 2840
• Main Authors: Shcherbakova, G. I., Pokhorenko, A. S., Krivtsova, N. S., Varfolomeev, M. S., Apukhtina, T. L., Drachev, A. I., Ashmarin, A. A., Storozhenko, P. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-11-2023; Springer; Springer Nature B.V
• Subjects: Aluminum oxide; Ceramic powders; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Chromium; Composition; Corundum; Hafnium; Metal industry; Metal oxides; Oligomers; Powders; Pyrolysis; Refractory metals; Zirconium; zirconium acetylacetonates; microcrystalline ceramic powders; hafnium and chromium acetylacetonates; ceramic- and fiber-forming metal-containing organoalumoxanes; organoalumoxanes
• ISSN: 1070-3632; 1608-3350
• DOI: 10.1134/S1070363223110129

Organoalumoxane oligomers modified with refractory metals (zirconium, hafnium, or chromium) were synthesized. Their physicochemical and fiber-forming properties were studied. Models of the group and elemental composition of oligomeric molecules of organoalumoxanes containing zirconium, hafnium, or chromium were proposed. Based on the results of X-ray diffraction and SEM analyses, it was found that pyrolysis of metal-containing organoalumoxanes at 1500°C in air results in the microcrystalline ceramic powders of corundum composition, modified with refractory metal oxides.