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Critical dynamics at the sol–gel transition
Physica A: Statistical Mechanics and its Applications, 2002Abstract In order to study the viscoelastic properties at the gelation transition we have introduced a percolation dynamic model. Using percolation and bond-fluctuation dynamics it is suited to study the critical behaviour of the viscoelastic properties and shows complex relaxation functions.
Del Gado E +2 more
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Sol-Gel Technology as Reflected in Journal of Sol-Gel Science and Technology
Journal of Sol-Gel Science and Technology, 2003Journal of Sol-Gel Science and Technology started as unique journal devoted to sol-gel science and technology in 1993. First, papers so far published in the Journal were intoduced. It was shown that the titles of invited papers and special issues show the broadening of the sol-gel area.
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Journal of Non-Crystalline Solids, 1992
Sol-gel chemistry involves nucleophilic reactions. The chemical reactivity of metal alkoxides toward hydrolysis, condensation and complexation mainly depends on the electronegativity of the metal atom, its coordination number and the steric hindrance of alkoxide groups. Silicon alkoxides are poorly reactive. Hydrolysis and condensation rates have to be
J. Livage, C. Sanchez
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Sol-gel chemistry involves nucleophilic reactions. The chemical reactivity of metal alkoxides toward hydrolysis, condensation and complexation mainly depends on the electronegativity of the metal atom, its coordination number and the steric hindrance of alkoxide groups. Silicon alkoxides are poorly reactive. Hydrolysis and condensation rates have to be
J. Livage, C. Sanchez
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Sol—Gel processing in Bad Honnef
Angewandte Chemie, 1989Conference Reports: Ralph Setton reports on his visit to an international symposium on graphite intercalation compounds, Hermann Schmalzried on the Annual Meeting of the German physical chemists which this year concentrated on solid state chemistry and physics, and Hans Reuter on a meeting on the sol–gel processing of ceramics.
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Current Opinion in Solid State and Materials Science, 1997
Abstract Sol-gel processes have long been used for the powderless processing of glasses and ceramics. Novel materials have appeared during the past few years with the synthesis of hybrid organic—inorganic compounds. Intermediate between glasses and polymers, these nanocomposites open up new possibilities in the field of materials science.
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Abstract Sol-gel processes have long been used for the powderless processing of glasses and ceramics. Novel materials have appeared during the past few years with the synthesis of hybrid organic—inorganic compounds. Intermediate between glasses and polymers, these nanocomposites open up new possibilities in the field of materials science.
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Physica B: Condensed Matter, 1989
We briefly review some recent aspects of the sol-gel transition of chemical gels, physical gels and non-organic silica gels focussing on neutron scattering experiments. These results are compared with the percolation model and the Flory-Stockmayer theory.
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We briefly review some recent aspects of the sol-gel transition of chemical gels, physical gels and non-organic silica gels focussing on neutron scattering experiments. These results are compared with the percolation model and the Flory-Stockmayer theory.
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การดูดซับของก๊าซธรรมชาติและน้ำโดยอลูมินาที่เตรียมโดยวิธี Sol-gel
2002กระบวนการกำจัดน้ำออกจากก๊าซธรรมชาติเป็นกระบวนการที่สำคัญกระบวนการหนึ่งในอุตสาหกรรมปิโตรเคมี ในงานวิจัยี้ได้นำสารดูดซับอลูมินาซึ่งสังเคราะห์โดยวิธีโซล-เจล (sol-gel) มาศึกษาสมบัติในการดูดซับน้ำจากก๊าซธรรมชาติ ผลการวิเคราะห์สมบัติทางกายภาพพบว่าสารดูดซัลอลูมินาที่สังเคราะห์ได้มีรูพรุนขนาดเล็กมากและเมื่ออบให้ความร้อนดังกล่าวที่อุณหภูมิสูงทำให้ค่าพื้นผ ...
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2019
Sol–gel processing is a nonmelting path to forming primarily silicate glasses. The most widely used precursors for the sol–gel process are metal alkoxides that undergo hydrolysis and condensation polymerization. Pure silica, binary compositions and multicomponent compositions are reacted to generate oxide polymers in the presence of water and alcohols.
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Sol–gel processing is a nonmelting path to forming primarily silicate glasses. The most widely used precursors for the sol–gel process are metal alkoxides that undergo hydrolysis and condensation polymerization. Pure silica, binary compositions and multicomponent compositions are reacted to generate oxide polymers in the presence of water and alcohols.
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2017
The use of sol-gel chemistry has afforded the development of a diverse range of chemical sensors, due to the ease with which the process can be modified to tailor properties of the material such as porosity and hydrophobicity. Furthermore, sol-gel films can be deposited on a variety of substrates, thus allowing flexibility in sensor configuration. This
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The use of sol-gel chemistry has afforded the development of a diverse range of chemical sensors, due to the ease with which the process can be modified to tailor properties of the material such as porosity and hydrophobicity. Furthermore, sol-gel films can be deposited on a variety of substrates, thus allowing flexibility in sensor configuration. This
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