caa a22 4500 477091784 CHVBK 20180405111517.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF00489814 doi (NATIONALLICENCE)springer-10.1007/BF00489814 Zirconia aerogels: Effect of acid used in the sol-gel process on morphological properties [Elektronische Daten] [Carsten Stöcker, Michael Schneider, Alfons Baiker] Zirconia aerogels have been prepared from butanolic zirconium(IV) tetra-n-butoxide diluted in ethanol via stoichiometric hydrolysis with water in ethanol. Nitric acid or acetic acid were used to modify the sol-gel process. After calcination in air at 573 K, the aerogel prepared with nitric acid possesses a specific surface area of 240 m2 · g−1 and a unimodal pore size distribution with a maximum at ca. 24 nm, whereas the use of acetic acid results in an aerogel with specific surface area of 228 m2 · g−1 and bimodal pore size distribution with maxima at 3 and 65 nm. The crystalline fractions of both aerogels are predominantly tetragonal with a small contribution of monoclinic ZrO2. Kluwer Academic Publishers, 1996 zirconia nationallicence sol-gel nationallicence aerogel nationallicence acetic acid nationallicence nitric acid nationallicence Stöcker Carsten Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut Schneider Michael Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut Baiker Alfons Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 325-330 1380-2224 2:4<325 1996 2 10934 https://doi.org/10.1007/BF00489814 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00489814 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Stöcker Carsten Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut NATIONALLICENCE 700 1- Schneider Michael Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut NATIONALLICENCE 700 1- Baiker Alfons Department of Chemical Engineering and Industrial Chemistry, Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092, Zürich, Switzerland aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer Netherlands 2/4(1996-12-01), 325-330 1380-2224 2:4<325 1996 2 10934 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer