Synthesis of Mg-Al mixed oxides with different distribution of basic sites

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dc.contributor.author Troppová, Ivana
dc.contributor.author Hudcová, Barbora
dc.contributor.author Smoláková, Lucie
dc.contributor.author Čapek, Libor
dc.date.accessioned 2020-05-15T12:00:11Z
dc.date.available 2020-05-15T12:00:11Z
dc.date.issued 2015
dc.identifier.isbn 978-80-7395-898-5
dc.identifier.issn 1211-5541
dc.identifier.uri https://hdl.handle.net/10195/75404
dc.description.abstract The aim of this work is to compare the structure and basicity of Mg-Al mixed oxides with the same Mg/Al molar ratio (Mg/Al 2) synthesised by means of different procedures. We have focused on the preparation of Mg-Al mixed oxides by the thermal pre-treatment of hydrotalcites synthesized by co-precipitation method. The individual methods differed from the application of alkaline solution used to control the reaction pH. We used two solutions, 0.5 M Na2CO3 + 3 M NaOH and 2 M NaOH, respectively. Moreover, MgO and two Mg-Al mixed oxides available to large-scale were used to compare the structure and basicity with those of materials synthesized in laboratory. The structure and basicity of Mg-Al mixed oxides were analysed by using XRD, N2-adsorption, TGA, and TPD-CO2. As found, the Mg-Al mixed oxide prepared by the thermal pre-treatment of hydrotalcite material and synthesised in the concentrated NaOH solution has exhibited a lower total concentration of basic sites as well as lower relative amount of medium/strong basic sites, in comparison with the Mg-Al mixed oxides originating from the hydrotalcites in the carbonate form. en
dc.format p. 83–95
dc.language.iso en
dc.publisher University of Pardubice en
dc.relation.ispartof Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 21/2015 en
dc.rights open access en
dc.title Synthesis of Mg-Al mixed oxides with different distribution of basic sites en
dc.type Article en
dc.peerreviewed yes en
dc.publicationstatus published en


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