𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Transformation of Aluminosilicate Wet Gel to Solid State

✍ Scribed by Katalin Sinkó; László Pöppl

Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
315 KB
Volume
165
Category
Article
ISSN
0022-4596

No coin nor oath required. For personal study only.

✦ Synopsis

Optically clear, homogeneous, monolithic aluminosilicate gels were prepared directly from solutions of inorganic aluminum salt, tetraethoxysilane, and alcohol. The dried aluminosilicate gels show new special properties, e.g. piezoelectricity and variable porosity (1-2000 m 2 /g) due to the fractal-like gel structure. Ceramic products, which keep the chemical bonds and structure of the gels, were produced by heat treatment at 300-3501C. The processes that occurred during heat treatment were investigated by thermal analysis and mass spectrometry. The temperature limits of the gel state were determined by differential scanning calorimetry and small angle X-ray scattering. The collapse of the gel structure began around 3501C; however, the amorphous character remained until the temperature (ca. 9701C) of the phase transmission. # 2002 Elsevier Science (USA)

📜 SIMILAR VOLUMES

ChemInform Abstract: Transformation of O
ChemInform Abstract: Transformation of Organosilicon-Loaded Alumina Gel to Homogeneous Aluminosilicates: A Solid-State NMR Study.
✍ Dmitry Bravo-Zhivotovskii; Semyon Melamed; Yitzhak Apeloig; Asher Schmidt; Sharo 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 31 KB 👁 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v

Transformation of intercalated layered s
Transformation of intercalated layered silicates to zeolites in the solid state
✍ Dr. Shinichi Shimizu; Yoshimichi Kiyozumi; Kazuyuki Maeda; Dr. Fujio Mizukami; D 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 880 KB

Shaping zeolites into useful forms is very important for technical applications in areas such as catalysis, separation, and sensing. Normally it is difficult to form zeolites into appropriate shapes without mixing them with binders. Here, a method is presented for transforming preformed layered sili

Solid-state NMR characterization of oxyg
Solid-state NMR characterization of oxygen sites in organically modified aluminosilicate xerogels
✍ Aurélie Lafuma; Franck Fayon; Dominique Massiot; Sandrine Chodorowski-Kimmès; Cl 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 259 KB

## Abstract Solid‐state NMR characterization of hybrid aluminosilicate xerogels, by ^17^O magic angle spinning (MAS) and triple quantum magic angle spinning (MQMAS) techniques, evidences Si—O—Si and Si—O—Al oxygen sites, spectrally separated in MQMAS experiments. Inversion of the MQMAS spectra allo