Venkateswara Rao et al., 1994 - Google Patents
Effect of solvents and catalysts on monolithicity and physical properties of silica aerogelsVenkateswara Rao et al., 1994
- Document ID
- 524654615398089232
- Author
- Venkateswara Rao A
- Pajonk G
- Parvathy N
- Publication year
- Publication venue
- Journal of materials science
External Links
Snippet
The effect of various solvents and catalysts on the monolithicity and physical properties of silica aerogels is reported. The aerogels were prepared by hydrolysis and polycondensation of tetramethoxysilane, followed by hypercritical drying, using 6 solvents of different chain …
- 239000003054 catalyst 0 title abstract description 62
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/146—After-treatment of sols
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/157—After-treatment of gels
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Venkateswara Rao et al. | Effect of solvents and catalysts on monolithicity and physical properties of silica aerogels | |
| Wang et al. | Transparent thermal insulation silica aerogels | |
| US5565142A (en) | Preparation of high porosity xerogels by chemical surface modification. | |
| Dorcheh et al. | Silica aerogel; synthesis, properties and characterization | |
| Wagh et al. | Comparison of some physico-chemical properties of hydrophilic and hydrophobic silica aerogels | |
| Fricke et al. | Aerogels | |
| Gesser et al. | Aerogels and related porous materials | |
| US5275796A (en) | Method for producing metal oxide aerogels having densities less than 0.02 g/cc | |
| Rao et al. | Influence of gel aging and Na2SiO3/H2O molar ratio on monolithicity and physical properties of water–glass-based aerogels dried at atmospheric pressure | |
| Smith et al. | Preparation of low-density aerogels at ambient pressure | |
| US20120228545A1 (en) | Method for producing a porous sio2-xerogel with a characteristic pore size by means of a bottom-up method using a precursor that has organic solid skeletal supports | |
| Cao et al. | Improving the visible transparency of silica aerogels | |
| Wagh et al. | Influence of molar ratios of precursor, solvent and water on physical properties of citric acid catalyzed TEOS silica aerogels | |
| Scherer | Structural evolution of sol-gel glasses | |
| Xia et al. | Synthesis and physicochemical characterization of silica aerogels by rapid seed growth method | |
| Venkateswara Rao et al. | Effect of gel parameters on monolithicity and density of silica aerogels | |
| Hæreid et al. | Subcritical drying of silica gels | |
| Sarawade et al. | Influence of solvent exchange on the physical properties of sodium silicate based aerogel prepared at ambient pressure | |
| Rao et al. | Preparation and characterization of hydrophobic silica aerogels | |
| Wang et al. | The effect of different alkaline catalysts on the formation of silica aerogels prepared by the sol–gel approach | |
| Buckley et al. | A comparison of the microstructural properties of silica aerogels and xerogels | |
| Heinrich et al. | Aerogels—Nanoporous materials part I: Sol-gel process and drying of gels | |
| Venkateswara Rao et al. | Influence of molar ratios of precursor, catalyst, solvent and water on monolithicity and physical properties of TMOS silica aerogels | |
| Richter et al. | Aerogels: Applications, structure, and heat transfer phenomena | |
| Wagh et al. | Influence of temperature on the physical properties of citric acid catalyze TEOS silica aerogels |