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Various oxide aerogels as supports for Pd-catalysts prepared with the use of supercritical C▫$O_2$▫Novak, Zoran ; Knez, ŽeljkoThe preparation and characterization of various aerogels of metal oxides (Si▫$O_2$▫, A▫$l_2$▫▫$O_3$▫, Ti▫$O_2$▫), binary oxides as catalyst supports, and NiO and Pd catalysts supported on various ... aerogels is presented. The preparation of aerogels includes several steps: sol-gel synthesis, drying and finally, thermal treatment. Excellent properties of aerogels, obtained with the sol-gel synthesis, were preserved with supercritical drying. Due to this fact, supercritical drying was carried out at the conditions above the binary critical curve of the solvent - C▫$O_2▫$, where the solvent and C▫$O_2▫$ are completely miscible. All produced arogels were characterized by means of nitrogen physiosorption at 77K, single point BET surface area measurements (adsorpion of argon-nitrogen gas mixture), X-ray diffraction and thermal analyses.Source: Chemistry and materials : proceedings of the 6th Meeting on supercritical fluids, 10-13 April 1999, Nottingham (United Kingdom) (Str. 89-94)Type of material - conference contributionPublish date - 1999Language - englishCOBISS.SI-ID - 4360982
Author
Novak, Zoran |
Knez, Željko
Topics
kemijska tehnologija |
procesna tehnika |
superkritični fluidi |
majhni delci |
pridobivanje |
PGSS proces |
chemical processing |
supercritical fluids |
small particles |
formation |
PGSS process
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Novak, Zoran | 13568 |
Knez, Željko | 02619 |
Source: Personal bibliographies
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