Search Results - "Moro, Celso C."
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Brilliant yellow dye immobilized on silica and silica/titania based hybrid xerogels containing bridged positively charged 1,4-diazoniabicyclo[2.2.2]octane: Preparation, characterization and electrochemical properties study
Published in Microporous and mesoporous materials (01-07-2008)“…Silica and silica/titania based hybrid xerogels containing the double charged 1,4-diazoniabicyclo[2.2.2]octane group bonded in a bridged way were obtained. The…”
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Strategy to control the amount of titania dispersed on SBA-15 surface preserving its porosity, aiming to develop a sensor for electrochemical evaluation of antibiotics
Published in Microporous and mesoporous materials (01-10-2019)“…In the present work, an experimental procedure was developed in order to obtain different amounts of titanium oxide highly dispersed on the surface of…”
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FTIR Study of Hydrogen and Carbon Monoxide Adsorption on Pt/TiO2, Pt/ZrO2, and Pt/Al2O3
Published in Langmuir (09-11-1999)“…The Pt/TiO2, Pt/ZrO2, and Pt/Al2O3 catalysts submitted to low-temperature reduction (LTR, 200 °C) and high-temperature reduction (HTR, 500 °C) and exposed to…”
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Structure and property studies of hybrid xerogels containing bridged positively charged 1,4-diazoniabicycle[2.2.2]octane dichloride
Published in Journal of colloid and interface science (01-05-2006)“…The compound di-3- n-propyltrimethoxysilane (1,4-diazoniabicycle[2.2.2]octane) dichloride, [(MeO) 3Si(CH 2) 3N +(CH 2CH 2) 3N +(CH 2) 3Si(OME) 3]Cl 2 was…”
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Influence of high-pressure processing on the structure and memory effect of synthetic layered double hydroxides
Published in Physics and chemistry of minerals (01-09-2009)“…We investigate the structural evolution of synthetic layered double hydroxides (LDH) samples, processed at room temperature and high-pressure (up to 7.7 GPa)…”
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3-n-Propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride silsesquioxane: A new water soluble polymer
Published in Journal of sol-gel science and technology (01-08-2003)“…A water soluble silsesquioxane polymer, with different grades of 3-n-propyl-1-azonia-4-azabicyclo[2.2.2]octanechloride pendant group, was obtained using the…”
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The effects of temperature of condensation on the thermal stability and morphology of 1,4-phenylenediamine-1-propylsilica xerogels
Published in Journal of sol-gel science and technology (01-05-2005)“…1,4-phenylenediamine-1-propylsilica hybrid xerogels were obtained for two composition at different temperatures of gelation, from 5 up to 70∘C. The…”
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FTIR study of the electronic metal-support interactions on platinum dispersed on silica modified with titania
Published in Surface and interface analysis (01-08-2002)“…Infrared spectroscopy, using carbon monoxide as probe molecule, was utilized to detect the electronic metal–support interactions on platinum dispersed on…”
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Silica–titania sol–gel hybrid materials: synthesis, characterization and potential application in solid phase extraction
Published in Talanta (Oxford) (10-04-2003)“…The biphenilaminepropylsilica and biphenilaminepropylsilicatitania were synthesized by sol–gel method, in two steps: (a) biphenylamine reacts with…”
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A characterization study of xerogel silicapropylaniline powders
Published in Journal of non-crystalline solids (01-10-2002)“…Silicapropylaniline nanometric materials with varying organic content were obtained using a sol–gel synthesis. By increasing the organic load, the scanning…”
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The influence of Na+ on the anilinepropylsilica xerogel synthesis by using the fluoride nucleophilic catalyst
Published in Colloid and polymer science (01-02-2003)“…Anilinepropylsilica xerogel was obtained by using an appropriate organosilane and tetraethyl orthosilicate as precursor reagents. The gelation was carried out…”
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Effects of the high pressure on the morphology of silica-based hybrid xerogels
Published in High pressure research (01-03-2006)“…The hybrid biphenylaminepropylsilica (bPhe/SiO 2 ) and biphenylaminepropylsilicatitania xerogels were obtained by the sol-gel synthesis. The bPhe/SiO 2…”
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The Influence of the Amount of Fluoride Catalyst on the Morphological Properties of the Anilinepropylsilica Xerogel Prepared in Basic Medium
Published in Journal of porous materials (01-12-2002)“…Anilinepropylsilica hybrid powder was synthesized by a sol-gel route in basic medium using HF as catalyst. The effect of the amount of HF catalyst on the…”
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New Multicomponent Reaction for the Direct Synthesis of β-Aryl-γ-nitroesters Promoted by Hydrotalcite-Derived Mixed Oxides as Heterogeneous Catalyst
Published in Journal of the Brazilian Chemical Society (01-02-2017)“…A new approach based on multicomponent/domino combined reactions for the synthesis of γ-nitroesters promoted by a mixed aluminium-magnesium oxides derived from…”
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Styrene photocatalytic degradation reaction kinetics
Published in Journal of the Brazilian Chemical Society (01-10-2011)“…The aqueous styrene photocatalytic degradation reaction was evaluated using TiO2 P-25 (Degussa) as a catalyst. These experiments were accomplished in a batch…”
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Estudo do efeito do cloreto em catalisadores de paládio usando a análise no infravermelho e de fotoelétrons excitados por raios x
Published in Química Nova (01-05-2002)Get full text
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Materiais híbridos à base de sílica obtidos pelo método sol-gel Silica based hybrid materials obtained by the sol-gel method
Published in Química nova (01-01-2009)“…This review deals with silica based hybrid materials obtained by the sol-gel method. It involves concepts, classifications and important definitions regarding…”
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Materiais híbridos à base de sílica obtidos pelo método sol-gel
Published in Química nova (2009)Get full text
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Synthesis of silica xerogels with high surface area using acetic acid as catalyst
Published in Journal of the Brazilian Chemical Society (2007)“…The influence of acetic acid on the pore structure and surface area of silica prepared by the sol-gel method was investigated. Experimental conditions of…”
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