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Super/Subcritical Fluid Extractions for Synthesis of Porous Metal Oxides
- 1.0347302 - ÚCHP 2011 CZ eng C - Conference Paper (international conference)
Matějová, Lenka - Matěj, Z. - Cajthaml, Tomáš - Šolcová, Olga
Super/Subcritical Fluid Extractions for Synthesis of Porous Metal Oxides.
Summaries 2. Praha: Process Engineering Publisher, 2010, s. 780. ISBN 978-80-02-02247-3.
[International Congress of Chemical and Process Engineering CHISA 2010 and 7th European Congress of Chemical Engineering ECCE-7 /19./. Prague (CZ), 28.08.2010-01.09.2010]
R&D Projects: GA ČR GP104/09/P290; GA AV ČR IAA400720701
Institutional research plan: CEZ:AV0Z40720504
Keywords : metal oxide * supercritic fluid extraction * subcritic water extraction
Subject RIV: CF - Physical ; Theoretical Chemistry
www.chisa.cz/2010, www.ecce7.com
In this study the influence of individual post-treatment steps on the crystallinity, purity and textural properties of prepared metal oxides - TiO2, ZrO2, TiO2-ZrO2 etc. in powdery form (aerogels) – has been studied. Titania and zirconia organogels were prepared as reaction semi-products of the sol-gel process controlled in reverse micellar solution of nonionic surfactant Triton X-114. in combination with a) subcritical fluid extractions (using water and subsequently methanol like pressurized solvents, SubWE/PFE) and b) calcination. The effect of various extraction conditions on textural and structural properties of metal oxides has been investigated. Besides that the reproducibility of these material properties has been also observed.
Permanent Link: http://hdl.handle.net/11104/0188107
Number of the records: 1