Journal ArticleDOI
Chemical synthesis of optical grade ceramic precursors: A spectrophotometric approach for analysis
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TLDR
In this article, an extremely controlled hydrolysis of a rapidly water-absorbing alkoxide was performed so as to achieve a gel of high optical transmittance, where an aluminium sec-butoxide precursor was structurally modified using ethyl acetoacetate in varying stoichiometric ratios.About:
This article is published in Ceramics International.The article was published on 1998-01-01. It has received 6 citations till now. The article focuses on the topics: Alkoxide & Sol-gel.read more
Citations
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Multicomponent analysis in the wavelet domain of highly overlapped electrochemical signals: resolution of quaternary mixtures of chlorophenols using a peg-modified sonogel-carbon electrode
José María Palacios-Santander,Laura Cubillana-Aguilera,Marina Cocchi,Alessandro Ulrici,Ignacio Naranjo-Rodriguez,Renato Seeber,J.L. Hidalgo-Hidalgo de Cisneros +6 more
TL;DR: In this paper, a new chemometric methodology was proposed to resolve, in the wavelet domain, quaternary mixtures of chlorophenols, in a concentration range from 0.05 to 0.25 µg·L−1.
Journal ArticleDOI
Synthesis and characterization of nanocrystalline zinc aluminate spinel by sol-gel technique using modified alkoxide precursor
Stanislav Kurajica,Emilija Tkalčec,Juraj Šipušić,Gordana Matijašić,Ivan Brnardić,Ivan Simčić +5 more
TL;DR: In this paper, zinc aluminate spinel (gahnite, ZnAl2O4) powders were prepared by sol−gel technique at low sintering temperatures.
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A spectroscopic study of calcium aluminate gels obtained from aluminium sec-butoxide chelated with ethyl acetoacetate in various ratios
TL;DR: The effect of modification of the starting Asb on the hydrolysis process, hydrolyzed gel structure and crystallization behavior is discussed in this paper, where three gels with Eaa/Asb molar ratios of 1/1, 3/2 and 2/1 were prepared.
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Structural characteristics and cyclic voltammetric behaviour of Sonogel-Carbon tyrosinase biosensors. A detailed comparative study of three immobilization matrixes
Mohammed ElKaoutit,Ignacio Naranjo-Rodriguez,Khalid R. Temsamani,Manuel Dominguez,J. L. Hidalgo-Hidalgo-de-Cisneros +4 more
TL;DR: In this paper, structural characteristics of three amperommetric biosensors based on immobilization of tyrosinase on a Sonogel-Carbon electrode for detection of phenols are described.
Journal ArticleDOI
Organic–inorganic hybrid materials: Part 9: Dynamics and stability of PMMA modified aluminum–EAA complex
TL;DR: In this article, the effects of PMMA content on the dynamics and stability of the M5-Al(OBu s )(EAA) 2 hybrids were investigated in a nanometer scale as estimated from the spin-lattice relaxation time.
References
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Journal ArticleDOI
A simple method for the preparation of homogeneous phospholipid vesicles.
TL;DR: The homogeneity of vesicle dispersions, prepared by this new method, is examined by several physical techniques and found to be comparable to the best samples prepared by molecular-sieve chromatography.
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Chemical modification of alkoxide precursors
TL;DR: In this paper, the most common chemical additives used in the sol-gel process are explained in terms of chemical reactivity, and the most important parameters appear to be the reactivity of the new ligand towards hydrolysis, the charge distribution in the new molecular precursor and the coordination numbers of the metal atom.
Journal ArticleDOI
Chemistry of material preparation by the sol-gel process
TL;DR: A survey of chemistry in sol-gel processing is given in this paper, where the basic chemistry of the solgel process is complex due to the different reactivities of the network forming and the network modifying components and the wide variety of reaction parameters.
Journal ArticleDOI
Synthesis of an alumina coating from chelated aluminium alkoxides
Rüdiger Nass,Helmut Schmidt +1 more
TL;DR: In this article, a chelating agent, such as AcAcH and EAA, is used to avoid the undersirable precipitation of gelatinuous aluminum hydroxides during hydrolysis of aluminum-sec-butoxides, Al(OBus).
Journal ArticleDOI
Aluminum alkoxide chemistry revisited: synthesis, structures, and characterization of several aluminum alkoxide and siloxide complexes
Jeffrey H. Wengrovius,M. F. Garbauskas,Elizabeth A. Williams,Rose C. Goint,Paul E. Donahue,Joanne F. Smith +5 more
TL;DR: Preparation et structures de [Al(OR) 2 (β-dicet)] n (OR=alcoolation silanolate) et [Al (OR)(β-Dicet) 2 ] 2. Ces composes sont stables en solution.
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