Structure and morphology evolution of silica-modified pseudoboehmite aerogels during heat treatment

作者: V.P. Pakharukova , A.S. Shalygin , E. Yu. Gerasimov , S.V. Tsybulya , O.N. Martyanov

DOI: 10.1016/J.JSSC.2015.11.007

关键词: AerogelCrystalliteCalcinationPseudoboehmiteNanostructureSupercritical dryingHigh-resolution transmission electron microscopyChemical engineeringMaterials scienceSol-gelCrystallography

摘要: … The silica dopant strongly impedes crystallization of the pseudoboehmite along the [010] direction. The silica seems to prevent sticking of primary boehmite sheets, so formation of two-…

参考文章(42)
Tatsuro Horiuchi, Laiyuan Chen, Toshihiko Osaki, Toyohiko Sugiyama, Kenzi Suzuki, Toshiaki Mori, A novel alumina catalyst support with high thermal stability derived from silica-modified alumina aerogel Catalysis Letters. ,vol. 58, pp. 89- 92 ,(1999) , 10.1023/A:1019069631852
Bruce E. Leach, Applied industrial catalysis Academic Press. ,(1983)
Baiyu Huang, Calvin H. Bartholomew, Stacey J. Smith, Brian F. Woodfield, Facile solvent-deficient synthesis of mesoporous γ-alumina with controlled pore structures Microporous and Mesoporous Materials. ,vol. 165, pp. 70- 78 ,(2013) , 10.1016/J.MICROMESO.2012.07.052
X Bokhimi, J Sánchez-Valente, F Pedraza, None, Crystallization of Sol–Gel Boehmite via Hydrothermal Annealing Journal of Solid State Chemistry. ,vol. 166, pp. 182- 190 ,(2002) , 10.1006/JSSC.2002.9579
Masashi Inoue, Hiroyuki Otsu, Hiroshi Kominami, Tomoyuki Inui, Synthesis of thermally stable, porous silica-modified alumina via formation of a precursor in an organic solvent Industrial & Engineering Chemistry Research. ,vol. 35, pp. 295- 306 ,(1996) , 10.1021/IE950252M
R. Petrovic, S. Milonjic, V. Jokanovic, Lj. Kostic-Gvozdenovic, I. Petrovic-Prelevic, Dj. Janackovic, Influence of synthesis parameters on the structure of boehmite sol particles Powder Technology. ,vol. 133, pp. 185- 189 ,(2003) , 10.1016/S0032-5910(03)00091-3
Frances I. Hurwitz, Meghan Gallagher, Tracy C. Olin, Molly K. Shave, Marlyssa Α. Ittes, Katy N. Olafson, Meredith G. Fields, Haiquan Guo, Richard B. Rogers, Optimization of Alumina and Aluminosilicate Aerogel Structure for High-Temperature Performance International Journal of Applied Glass Science. ,vol. 5, pp. 276- 286 ,(2014) , 10.1111/IJAG.12070
Aurelian F. Popa, Sylvie Rossignol, Charles Kappenstein, Influence of drying technique on silicon insertion into γ-alumina and consequences for the homogeneity and thermal stability of silica-alumina aquagels Journal of Materials Chemistry. ,vol. 12, pp. 2866- 2868 ,(2002) , 10.1039/B205209C
Tatsuro Horiuchi, Toshihiko Osaki, Toyohiko Sugiyama, Kenzi Suzuki, Toshiaki Mori, Maintenance of large surface area of alumina heated at elevated temperatures above 1300 °C by preparing silica-containing pseudoboehmite aerogel Journal of Non-Crystalline Solids. ,vol. 291, pp. 187- 198 ,(2001) , 10.1016/S0022-3093(01)00817-1