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Title: Synthesis and study on pore structure of SiO{sub 2}/Al{sub 2}O{sub 3} aerogel

In the current paper, the mixed SiO{sub 2}/Al{sub 2}O{sub 3} aerogel was synthesized by sol-gel method with subcritical drying and characterized. Tetraethoxysilane was used as a precursor of silicon sol. The flower-shaped alumina suspension was peptized to produce alumina sol. The aerogel texture, morphology, and structure were determined using scanning electron microscopy, X-ray diffraction, low-temperature nitrogen adsorption, and high-resolution spectroscopy. A special attention was paid to the pore structure of aerogel, and aerogel framework was formed by the spherical agglomerates containing spherical particles of silicon oxide and alumina nanopetals. The pore size distribution was bimodal with peaks of 5.5 nm and 77 nm.
Authors:
; ; ; ;  [1] ;  [2] ; ; ; ;  [3]
  1. Institute of Strength Physics and Materials Science SB RAS, Tomsk, 634055 (Russian Federation)
  2. (Russian Federation)
  3. V.E. Zuev Institute of Atmospheric and Oceanic Optics SB RAS, Tomsk, 634055 (Russian Federation)
Publication Date:
OSTI Identifier:
22492510
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1683; Journal Issue: 1; Conference: International conference on advanced materials with hierarchical structure for new technologies and reliable structures 2015, Tomsk (Russian Federation), 21-25 Sep 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; ADSORPTION; ALUMINIUM OXIDES; DISTRIBUTION; DRYING; MORPHOLOGY; NITROGEN; PARTICLES; PORE STRUCTURE; RESOLUTION; SCANNING ELECTRON MICROSCOPY; SILANES; SILICON; SILICON OXIDES; SOL-GEL PROCESS; SPECTROSCOPY; SPHERICAL CONFIGURATION; SUSPENSIONS; SYNTHESIS; TEMPERATURE RANGE 0065-0273 K; X-RAY DIFFRACTION