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Ein im normalen Betrieb geeignetes Material für Dieselrußpartikelfilter stellt Cordierit dar. Bei der Filterregeneration, die nötig ist um die im Betrieb akkumulierten Rußpartikel abzubrennen, kann es zu Reaktionen mit Aschebestandteilen kommen, wodurch der Filter geschädigt wird. Um dies zu verhindern, wird ein Schutzschichtmaterial identifiziert und ein Verfahren etabliert, womit die Porenkanäle des Filters beschichtet werden, um die durch
Natriumzirkonphosphat --- Sol-Gel --- dünne Schichten --- Dieselrußpartikelfilter --- Cordierit
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Sol-gel, Procédé --- Catalyse --- Surfaces --- Catalysis
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Ceramic materials. --- Silica gel. --- Hydrolysis. --- Colloids. --- Sol-gel process
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Die industrielle Erzeugung von Massenprodukten aber auch von hochwertigen Spezialchemikalien erfolgt oftmals mithilfe von Fällprozessen.Die Kenntnis des Zusammenhangs zwischen den stoffsystemspezifischen Grundlagen und der technischen Feststofferzeugung ist jedoch mangelhaft und wird oftmals wenig verstanden. Ziel dieser Arbeit ist es daher, diese beschriebene Lücke zu schließen.
Aggregation --- Fällungskieselsäuren --- Sol-Gel-Verfahren --- Fällung --- Gelieren --- Fraktal --- Fraktale Dimension --- Fällungskristallisation --- Calciumcarbonat --- Aggregation --- Fällungskieselsäuren --- Sol-Gel-Verfahren --- Fällung --- Gelieren --- Fraktal --- Fraktale Dimension --- Fällungskristallisation --- Calciumcarbonat
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Ceramic materials --- Composite materials --- Glass --- Biomedical materials --- Sol-gel, Procédé. --- Matériaux céramiques. --- Composites --- Verre --- Biomatériaux. --- Résumés analytiques. --- Sol-gel, Procédé. --- Matériaux céramiques. --- Biomatériaux. --- Résumés analytiques.
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Ceramic materials --- Ceramics --- Composite materials --- Colloids --- Powders --- Sol-gel, Procédé. --- Poudres --- Composites --- Céramique industrielle. --- Matériaux céramiques. --- Colloïdes. --- Synthesis --- Synthèse. --- Sol-gel, Procédé. --- Céramique industrielle. --- Matériaux céramiques. --- Colloïdes. --- Synthèse.
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Glass --- Amorphous substances --- Glass. --- Amorphous substances. --- Ceramics --- Glazing --- non-crystalline solids --- glasses --- amorphous semiconductors --- sol-gel materials --- amorphous metals
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Molecularly imprinted polymers are materials that have voids that are complementary in shape, size, and electronic environment to a specific molecule used for preparation, known as the template. These voids are specific recognition sites that bind the templates preferentially and are used specifically for biomimetic sensors and for solid-phase extraction. Because the specific surface is very important during this process, the use of films and membranes is preferred. This book contains four articles dedicated to sensor application (three research articles and one review) and one research article dedicated to solid-phase extraction.
Technology: general issues --- History of engineering & technology --- Materials science --- sol-gel --- molecularly imprinted films --- bisphenol A --- organosilane monomer --- molecularly imprinted polymer --- optical sensor --- plastic optical fiber --- surface plasmon resonance --- 2-furaldehyde --- vegetable oil --- waste plastic --- polyethylene terephthalate --- electrospinning --- 2-(aminomethyl)pyridine --- adsorption --- copper ion --- nanofibre --- molecularly imprinted layers --- surface polymerization --- electropolymerization --- sol–gel derived techniques --- phase inversion --- electroactive pastes and inks --- amyloid β-42 --- molecularly imprinted polymers --- potentiometric sensor --- Alzheimer biomarker --- n/a --- sol-gel derived techniques
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La présence de composés pharmaceutiques dans notre environnement est nocive pour la faune et la flore aquatiques ainsi que pour l'Homme. Elle doit donc être empêchée. Cependant, les systèmes de traitement d'épuration des eaux ne sont toujours pas suffisamment efficaces pour dégrader entièrement ces molécules. C'est pourquoi le projet "Traitement Oxydatif de ComposEs Pharmaceutiques, TOCEP" a été créé: il consiste à l'élaboration d'un traitement de finition des eaux en sortie de stations d'épuration à partir d'un traitement oxydatif avancé, soit une combinaison d'ozonation et de photocatalyse hétérogène. Ce travail de fin d'études s'inscrit dans la lignée de ce projet et plus particulièrement dans la participation à la mise au point du photocatalyseur idéal, principalement à base de dioxyde de titane, pour la dégradation de composés pharmaceutiques en phase aqueuse. L'influence de différents paramètres opératoires sur l'efficacité de dégradation de ces composés pharmaceutiques est également étudiée. The presence of pharmaceutical compounds in our environment is harmful for the aquatic fauna and flora as well as to humans. Therefore, it has to be prevented. However, wastewater treatment systems are still not efficient enough to fully degrade these molecules. The "Oxidative Treatment of Pharmaceutical Compounds, TOCEP" project was created in this context. It consists of the development of a finishing treatment of wastewater at the outlet of sewage treatment plants by an advanced oxidative treatment, meaning a combination of ozonation and heterogeneous photocatalysis steps. This master's thesis is in the continuity of the project and more particularly in the participation in the development of the ideal photocatalyst, mainly based on titanium dioxide, for the degradation of pharmaceutical compounds in aqueous phase. The influence of different operating parameters on the degradation efficiency of these pharmaceutical compounds is also studied.
Photocatalyse --- Dioxyde de titane --- TiO2 --- Sol-gel --- Dépollution --- Ozonation --- Films minces --- Oxydation avandée --- Composés pharmaceutiques --- Bleu de méthylène --- Ingénierie, informatique & technologie > Ingénierie chimique
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Ceramic materials --- Ceramische materialen --- Electrooptical devices --- Elektro-optische systemen --- Materiaux ceramiques --- Matériaux optiques --- Optical materials --- Optische materialen --- Systemes electro-optiques --- Colloids. --- Glass. --- Thin film devices. --- Glass --- Optical properties --- Colloids --- Thin film devices --- Sol-gel process
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