caa a22 4500 46319005X CHVBK 20180406164906.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10973-006-8202-1 doi (NATIONALLICENCE)springer-10.1007/s10973-006-8202-1 Influence of aluminium precursor on physico-chemical properties of aluminium hydroxides and oxides [Elektronische Daten] Part IV. Al(OH)(CH3COO)2 [Barbara Pacewska, Olga Kluk-Płoskońska, Dariusz Szychowski] The paper concerns aluminium hydroxides precipitated during hydrolysis of aluminium acetate in ammonia medium, as well as aluminium oxides obtained through their calcination at 550, 900 or 1200°C for 2 h. The following techniques were used for analysing of obtained materials: thermal analysis, IR spectroscopy, X-ray diffraction, low-temperature nitrogen adsorption, adsorption-desorption of benzene vapours and scanning electron microscopy. Freshly precipitated boehmite/pseudoboehmite had high value of S BET, very good sorption capacity for benzene vapours, developed mesoporous structure and hydrophilic character. After prolonged refluxing at elevated temperature its crystallinity increased which was accompanied by a decrease of specific surface determined from nitrogen adsorption, decrease of sorption capacity for benzene vapours and weakening of the hydrophilic character. Calcination of all hydroxides at the temperature up to 1200°C resulted in the formation of α-Al2O3 via transition forms of γ-, δ-and θ-Al2O3. The samples of aluminium oxides obtained after calcination at 550 and 900°C were characterised with high values of specific surface area and displayed quite high heat resistance, probably due to a specific morphology of starting hydroxides. The process of ageing at elevated temperature developed thermal stability of aluminium oxides. Springer Science+Business Media, LLC., 2007 acetate nationallicence boehmite nationallicence thermal decomposition nationallicence transition aluminium oxides nationallicence Pacewska Barbara Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut Kluk-Płoskońska Olga Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut Szychowski Dariusz Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/3(2007-12-01), 783-793 1388-6150 90:3<783 2007 90 10973 https://doi.org/10.1007/s10973-006-8202-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-006-8202-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pacewska Barbara Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut NATIONALLICENCE 700 1- Kluk-Płoskońska Olga Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut NATIONALLICENCE 700 1- Szychowski Dariusz Warsaw University of Technology, Faculty of Building Engineering, Mechanics and Petrochemistry, Institute of Chemistry, Łukasiewicza 17 St., 09-400, Płock, Poland aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer US; http://www.springer-ny.com 90/3(2007-12-01), 783-793 1388-6150 90:3<783 2007 90 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer