Relevant bibliographies by topics / Micellar catalysi / Dissertations / Theses
To see the other types of publications on this topic, follow the link: Micellar catalysi.

Dissertations / Theses on the topic 'Micellar catalysi'

Author: Grafiati
Published: 9 March 2023
Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Micellar catalysi.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

SANZONE, ALESSANDRO. "Towards the development of sustainable materials for organic electronics." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2019. http://hdl.handle.net/10281/241277.

Full text
Abstract:
La sintesi e la caratterizzazione di semiconduttori organici (OS) è stata un ambito di ricerca molto sviluppato negli ultimi due decenni. La loro potenziale applicazione per dispositivi come transistor a effetto di campo organici (OFET), diodi organici a emissione di luce (OLED) e celle fotovoltaiche organiche (OPV), ha scatenato un'intensa attività di ricerca in questo campo. Sulla base dei recenti progressi nella tecnologia dei materiali e dei processi e del previsto sviluppo tecnologico futuro, gli esperti sono stati in grado di identificare le sfide chiave di questa tecnologia, per le qual
APA, Harvard, Vancouver, ISO, and other styles
2

CERIANI, CHIARA. "Organic Materials for (Opto)electronics introducing Sustainability in Design, Synthesis and Manufacturing." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/369035.

Full text
Abstract:
Il progetto di ricerca si concentra sullo sviluppo di nuove strategie sintetiche per la preparazione di semiconduttori organici stampabili e scalabili industrialmente. A tal fine, è stato introdotto un nuovo metodo sintetico per una facile, economica ed eco-sostenibile produzione di semiconduttori organici coniugati. Oggigiorno, il concetto di sostenibilità è una questione molto importante per le aziende che si impegnano nel rispettare i principi della Green Chemistry al fine di ridurre l'impatto ambientale dei processi chimici. In questo quadro, la catalisi micellare si è dimostrata un'ottima
APA, Harvard, Vancouver, ISO, and other styles
3

Maximiano, Flavio Antonio. "Micelas mistas de surfatantes zwiteriônicos e catiônicos: propriedades físico-químicas e efeito na cinética de reação unimolecular." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/46/46132/tde-13052008-153348/.

Full text
Abstract:
O interesse por sistemas formados por misturas de surfatantes se deve ao fato destas misturas apresentarem propriedades diferentes, e algumas vezes superiores, às dos surfatantes puros. Neste trabalho foram realizadas, em água e em soluções aquosas de sal, medidas de CMC, constantes de dissociação iônica, concentrações superficiais de contra-íons e entalpias de micelização para misturas de surfatantes zwiteriônicos e catiônicos. Os surfactantes catiônicos utilizados foram: brometo e cloreto de N- hexadecil - N,N,N - trimetil amônio, CTAB(C), e brometo de N- dodecil N,N,N - trimetil amônio, DTA
APA, Harvard, Vancouver, ISO, and other styles
4

Wang, Qiyan. "Design of solid micellar catalysts for sustainable chemistry." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR029.

Full text
Abstract:
L'épuisement des ressources fossiles et les préoccupations environnementales croissantes encouragent la production de produits chimiques et de carburants durables à partir des ressources de la biomasse et du CO2. L'objectif fondamental de ce projet de recherche concerne la conception d'un nouveau système de catalyseur micellaire à un seul atome. Les catalyseurs sont classiquement classés en homogènes et hétérogènes. Les catalyseurs homogènes offrent une efficacité élevée, liée à une utilisation maximale des métaux et des sites actifs hautement accessibles, et une sélectivité élevée, en raison
APA, Harvard, Vancouver, ISO, and other styles
5

Chhatre, A. S. "Microemulsion systems and micellar catalysis." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1992. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/3049.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Gonçalves, Larissa Martins. "Um modelo para detoxificação de organofosforados: efeito de micelas e vesículas na oximólise de p-nitrofenildifenilfosfato." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-02022007-171907/.

Full text
Abstract:
Oximas têm sido extensivamente usadas como antídoto para envenenamento por organofosforados e como desontaminante. Micelas e vesículas, utilizadas como catalisadores e transportadores de drogas, constituem agentes potenciais para tratamento e descontaminação. Neste trabalho descrevemos a reação de p-Nitrofenildifenilfosfato (PNPDPP), um substrato modelo para organofosforado, com: acetofenoxima (I); ácido 10- fenil-10-hidroxiiminodecanóico (II); 4-(9-carboxinonanil)-1-(9-carboxi-1-hidroiimino nonanil) benzeno (III); cloreto de N-dodecilpiridina (IV); cloreto N-metilpiridina 2-aldoxima (V), na p
APA, Harvard, Vancouver, ISO, and other styles
7

Diego-Castro, Michael John. "Micellar media and the catalysis of the Diels-Alder reactions." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312963.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Gwicana, Sakumzi. "Micellar-enhanced ultrafiltration of palladium and platinum anions." Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/518.

Full text
Abstract:
The project was concerned with studying the capability of a micellar-enhanced ultrafiltration system (MEUF) to remove platinum group metal ions namely Pt (lV) and Pd (ll) chloro anions from aqueous industrial waste effluents. South Africa has the world’s largest reserves of platinum group metals (PGMs) and other valuable metals such as manganese, chrome ores, titanium minerals etc. which are required for new automotive and other technologies, including fuel cells, catalytic converters and lighter components. The consistent loss with the industrial waste stream and the toxicological effects of
APA, Harvard, Vancouver, ISO, and other styles
9

Tondo, Daniel Walker. "Síntese e estudos físico-químicos de surfactantes dipolares iônico." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/94804.

Full text
Abstract:
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-Graduação em Química, Florianópolis, 2011<br>Made available in DSpace on 2012-10-25T16:27:48Z (GMT). No. of bitstreams: 1 288270.pdf: 3875174 bytes, checksum: 2d983bc7cb93aa663182a095ae25dc76 (MD5)<br>Este trabalho aborda o estudo físico-químico de surfactantes dipolares iônicos ou zwiteriônicos, tendo como foco a investigação da ligação de íons em micelas dipolares iônicas. Inicialmente, é descrito o estudo de interação entre diversos íons e micelas de sulfobetaínas utilizando
APA, Harvard, Vancouver, ISO, and other styles
10

Couderc, Sabine. "Micelles d'oximates hexadecyltrimethylammonium : propriétés et conjonction des catalyses micellaire et supernucléophile pour la destruction par hydrolyse des triesters phosphoriques." Versailles-St Quentin en Yvelines, 1999. http://www.theses.fr/1999VERS0010.

Full text
Abstract:
L' @hydrolyse des triesters phosphoriques est étudiée au plan cinétique dans l'eau et dans les solutions de sels d'hexadecyltrimethylammonium en présence d'ions oximate catalytiques. En l'absence de tensioactif, les ions oximate sont des nucléophiles catalyseurs plus efficaces que d'autres nucléophiles de même basicité. Cela provient de l'effet dénommé effet. Par suite d'un effet de saturation des nucléophiles, l'extra réactivité est maximale pour des ions oximate dont le pk a est proche de 8. Les micelles cationiques accentuent fortement l'effet catalytique par un facteur atteignant 10 3, l'a
APA, Harvard, Vancouver, ISO, and other styles
11

Peroza, Meza Carlos Arturo. "Factors affecting the alkaline hydrolysis of carbaryl in the presence of cationic surfactants." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/6248.

Full text
Abstract:
Alkaline degradation of Carbaryl in the presence of CTAB micelles has been reported as the most efficient method; however, the factors accounting for it are not yet clear. The main objective of this work was to study some of the factors affecting the alkaline degradation of Carbaryl in the presence of cetyl trimethylammonium bromide (CTAB). Three specific aims were researched in order to address the main objective. Solubility studies, UV-vis, fluorescence, and 1D-HNMR and 2D-HNMR spectroscopies were used to research the solubilization of carbaryl in CTAB micelles. Solubility studies showed tha
APA, Harvard, Vancouver, ISO, and other styles
12

CATERINA, RISI. "Studies on organic synthesis through sustainable catalysis." Doctoral thesis, Università di Siena, 2020. http://hdl.handle.net/11365/1094721.

Full text
Abstract:
Today the development of sustainable processes in the chemical industry is critical, and Green Chemistry represents an evolution from the conventional concepts of process efficiency. Twenty years ago, Paul Anastas and John Warner introduced this concept within the twelve principles. In this work, many aspects the twelve principles are applied, developing sustainable methods involving the use of metal catalysis and biocatalysis through one pot and cascade reactions.<br>In the first part of the PhD period, the use of the micellar catalysis was investigated, to perform reactions in water avoiding
APA, Harvard, Vancouver, ISO, and other styles
13

Meggiato, Francesca <1989&gt. "catalisi micellare nella formazione di legami C-C e C-O." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/10470.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Lambert, Romain. "Nouveaux copolymères et nanostructures dérivés de liquides ioniques à base d'imidazoliums : applications en catalyse et comme additifs conducteurs ioniques." Thesis, Bordeaux, 2016. http://www.theses.fr/2016BORD0306/document.

Full text
Abstract:
Des poly(liquides ioniques) (PILs) arrangés sous la forme de copolymères statistiques,de nanoparticules à chaine unique ou bien sous la forme de copolymères à blocs autoassemblés ont été employés comme précurseurs de carbènes N-hétérocycliques (NHC)s à des fins de catalyses organiques ou organométalliques. L’introduction d’anions acétate dans des unités PIL dérivés d’imidazolium permet la génération in situ de NHCs actifs en catalyse. Les nanoparticules composées d’une chaine unique polymère repliée sur elle-même (SCNP) ont été spécialement conçues selon deux stratégies impliquant, d’une part,
APA, Harvard, Vancouver, ISO, and other styles
15

Ouarti, Nadia. "Tampons faiblement basiques en milieu micellaire : application à l'optimisation de la catalyse micellaire de la déphosphorylation d'un ester organophosphoré hydrophobe par des oximates." Paris 7, 2001. http://www.theses.fr/2001PA077228.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Yu, Xiaoqian [Verfasser]. "Synthesis of organocatalysts immobilized on temperatureresponsive polymers for application in micellar catalysis / Xiaoqian Yu." Paderborn : Universitätsbibliothek, 2018. http://d-nb.info/1167856465/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Frescura, Vera Lucia Azzolin. "Estabilidade cinetica e termodinamica de benzilcobalamina, em presença de detergentes." reponame:Repositório Institucional da UFSC, 1989. http://repositorio.ufsc.br/xmlui/handle/123456789/75539.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T02:14:25Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T16:11:52Z : No. of bitstreams: 1 78933.pdf: 1921988 bytes, checksum: 187026bb86e8eeb4524646ac009c92e9 (MD5)<br>Foram estudadas as velocidades de decomposição térmica da ligação cobalto-carbono na benzilcobalamina em solução aquosa de brometo de cetiltrimetilamônio (CTABr), dodecilsulfato de sódio (SDS), decilfosfato mono e dissódico (NaDP e Na2DP) em função do pH e da concentração d
APA, Harvard, Vancouver, ISO, and other styles
18

Roman, Maria Ada Lezcano. "Hidrolise basica da 2.2.2-tricloro-1-fenilectanona em micelas normais." reponame:Repositório Institucional da UFSC, 1989. http://repositorio.ufsc.br/xmlui/handle/123456789/75541.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina. Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T02:15:32Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T16:26:56Z : No. of bitstreams: 1 78936.pdf: 1915711 bytes, checksum: 8404173fee0c88c54e34ed1c764ebc2c (MD5)<br>A hidrólise básica da 2,2,2-tricloro-1-feniletanona (TCA) foi estudada em soluções aquosas na presença de surfactantes catiônicos, aniônicos e não-iônicos em diferentes valores de pH. Os dados cinéticos foram analisados segundo o modelo de troca iônica. O brometo de hexadec
APA, Harvard, Vancouver, ISO, and other styles
19

Bertoncini, Clelia Rejane Antonio. "Efeito de aditivos em micelas cationicas." reponame:Repositório Institucional da UFSC, 1989. http://repositorio.ufsc.br/xmlui/handle/123456789/75544.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T02:16:38Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T16:26:26Z : No. of bitstreams: 1 78937.pdf: 2437398 bytes, checksum: 1ee043098f93193a5fadb8fd46ed69b3 (MD5)<br>Micelas catiônicas de brometo e hidróxido de cetiltrietilamônio (CTEABr e CTEAOH) têm suas propriedades físico-químicas afetadas pela adição de n-butanol (BuOH). Através de medidas de condutividade, a 25oC, foram determinados os valores de CMC e a destes detergentes, em sol
APA, Harvard, Vancouver, ISO, and other styles
20

Ferreira, Ligia Catarina Mello. "Efeito da concentração de hidroxido e de sais em reações de eliminação catalisadas por hidroxido de hexadeciltrimetilamonio." reponame:Repositório Institucional da UFSC, 1990. http://repositorio.ufsc.br/xmlui/handle/123456789/75699.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T03:36:21Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T16:43:16Z : No. of bitstreams: 1 79080.pdf: 1954712 bytes, checksum: c7bf826101cd72829d88167ddb5a2703 (MD5)<br>Estudou-se a desidrocloração do 1,1-difenil-2,2,2-tricloroetano (DDTH) em meio básico, em micelas de hidróxilo de cetiltrimetilamônio (CTAOH). Na ausência de KOH adicionando, o comportamento cinético foi o esperado para reações onde o contra íon é o íon reativo. As equaçõe
APA, Harvard, Vancouver, ISO, and other styles
21

Frescura, Vera Lucia Azzolin. "Estudo da reação de hidrolise de esteres arilicos e anidrido benzoico em presença de dodecanoato de sodio e sulfobetainas." reponame:Repositório Institucional da UFSC, 1995. http://repositorio.ufsc.br/xmlui/handle/123456789/76300.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T09:05:05Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T20:12:42Z : No. of bitstreams: 1 101779.pdf: 3030271 bytes, checksum: e9894b9e896d22884232cc14aaa6215f (MD5)<br>Determinação dos valores de concentração micelar crítica, grau de ionização micelar, e de pH aparente para misturas binárias de dodecanoato de sódio (SDOD) e sulfobetaínas, SB3-n, para a série com n = 10, 12, 14, 16. Estudo da hidrólise básica do acetato de 2,4-dinitrofeni
APA, Harvard, Vancouver, ISO, and other styles
22

Attwood, D. "Metal ion catalysed ester hydrolysis in reverse micelles." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234927.

Full text
APA, Harvard, Vancouver, ISO, and other styles
23

Bartels, Carl. "Coronae of block copolymer micelles as supports for organometallic catalysis." Thesis, McGill University, 2003. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82827.

Full text
Abstract:
This thesis presents the results of several studies, the overall goal of which was the design and understanding of a block copolymer micelle in which the coronal chains act as a catalyst support for organometallic species. A model system consisting of reverse micelles of polystyrene-block -poly (sodium acrylate), PS-b-PANa, with coronal chain composed of ca. 210 styrene repeat units and a core radius of ca. 3.0 nm was used in the first study. The coronal chains were loaded to varying extents with Cr(CO)3 fragments in an effort to observe the effect of loading on the corona. The hydrodyn
APA, Harvard, Vancouver, ISO, and other styles
24

Assih, Sama Pyahalo. "Polymérisation de micelles ioniques ; effet sur la solubilisation de cétones aromatiques ; effet sur la catalyse de l'hydrolyse baso-catalysée d'esters de paranitrophényle et de l'hydrolyse acido-catalysée de diéthylacétals de benzaldéhydes substitués." Montpellier 2, 1990. http://www.theses.fr/1990MON20277.

Full text
Abstract:
L'etude de la solubilisation de composes hydrophobes et celle des reactions d'hydrolyse acido-catalysee de diethylacetals de benzaldehydes substitues en presence des micelles directes polymerisees ou non polymerisees analogues, a permis de preciser les consequences d'une polymerisation sur les proprietes micellaires. Dans tous les cas, la polymerisation amplifie les effets micellaires. On observe une plus grande solubilisation et des effets catalytiques plus importants. De plus, ces effets apparaissent avec des micelles polymerisees des les plus faibles concentrations, tandis qu'avec les micel
APA, Harvard, Vancouver, ISO, and other styles
25

Eychenne, Patricia. "Catalyse micellaire en présence de sels métalliques : hydrolyse, oxydation et polymérisation." Toulouse 3, 1994. http://www.theses.fr/1994TOU30141.

Full text
Abstract:
Dans nos travaux la catalyse micellaire par des sels metalliques a ete etudiee sur les hydolyses, les oxydations et les polymerisations. La premiere partie est une mise au point bibliographique: la definition, les proprietes et les avantages des systemes micellaires, emulsions et microemulsions en milieu aqueux et non aqueux sont enonces. La seconde partie concerne la decontamination du paraoxon par la reaction modele d'hydrolyse basique du p-nitrophenyl diphenylphosphate. Le chlorure de cetyl pyridinium est choisi en raison d'une meilleure affinite avec le substrat aromatique. Des etudes en m
APA, Harvard, Vancouver, ISO, and other styles
26

Duangchan, Apinya. "Residue upgrading using dispersed catalysts prepared in reverse micelles." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq27133.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Dennis, Kim Jason. "Use of isomerizable N-alkylmerocyanine dyes to robe molecular interactions within micellar solubilization sites." Scholarly Commons, 1986. https://scholarlycommons.pacific.edu/uop_etds/2116.

Full text
Abstract:
Effects of aqueous surfactant solutions upon cis/trans isomerization reactions of various N-alkyl-merocyanine dyes (II) were studied. Dramatic rate enhancements were found for all dyes in CTAB and SDS solutions above the CMC. CTAB solutions showed the greatest effect with some dye isomerizations catalyzed in excess of 1000-fold. Increases in either CTAB concentration or dye isomerization rates. N-methyl through N-pentyl dye isomerization rates were measured as a function of CTAB concentration and the data treated according to the pseudophase model for micellar catalysis. KS values ranged from
APA, Harvard, Vancouver, ISO, and other styles
28

Chuenchom, Laemthong [Verfasser]. "Micelle-templated carbon coatings and their applications for catalysis / Laemthong Chuenchom." Gießen : Universitätsbibliothek, 2013. http://d-nb.info/1065395353/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Barnes, Jeffery G. "Elaboration of micelle formation in aqueous and two phase solutions by surface active phosphines." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06112009-063728/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
30

Manfredi, Alex Molina. "Reações de transferência do grupo fosforila catalisadas por oximas e íons cu2+ em meio micelar." Florianópolis, SC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/96452.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em Química<br>Made available in DSpace on 2012-10-26T12:13:27Z (GMT). No. of bitstreams: 1 301797.pdf: 1816586 bytes, checksum: 0339e22f98c5055c0b07a74c91e84d31 (MD5)<br>Na intenção de se construir modelos bio-inspirados baseados nas características de fosfoesterases, o presente trabalho relata o desenvolvimento de novos modelos teóricos com o intuito de explicar a eficiência catalítica de oximas e de íons Cu2+ nas reações de ésteres de fosfato, principalmente de
APA, Harvard, Vancouver, ISO, and other styles
31

Rubio, Danil Agar Rocha. "Efeitos estruturais e cataliticos sobre micelas de dodecilsulfato de sodio, por adição de n-butonol." reponame:Repositório Institucional da UFSC, 1994. http://repositorio.ufsc.br/xmlui/handle/123456789/76152.

Full text
Abstract:
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T07:46:54Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T18:44:38Z : No. of bitstreams: 1 98249.pdf: 2005254 bytes, checksum: 4e478fe65deacf2094440262c87aebc2 (MD5)<br>O estudo das propriedades das micelas do dodecilsulfato de sódio por adição de n-butanol mostra que a concentração micelar crítica inicialmente diminui com o aumento da concentração do álcool. O número de agregação micelar e associação micelar também decrescem. As constantes de v
APA, Harvard, Vancouver, ISO, and other styles
32

HADDAD-FAHED, OMAIMA. "Catalyse micellaire de reactions de substitution nucleophile aromatique comportant des reactifs electriquement charges." Paris 6, 1987. http://www.theses.fr/1987PA066419.

Full text
APA, Harvard, Vancouver, ISO, and other styles
33

Haddad, Omaima. "Catalyse micellaire de réactions de substitution nucléophile aromatique comportant des réactifs électriquement chargés." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37606110d.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Lacanau, Valentin. "Conception et étude physico-chimique d’amphiphiles auto-assemblés pour l’extraction de métaux et la catalyse en milieu aqueux." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTS127.

Full text
Abstract:
Ce projet vise à étudier et développer un principe novateur pour la valorisation de métaux issus du recyclage, en particulier du Pd, consistant en l’utilisation directe d’une phase organique issue d’une extraction liquide-liquide pour effectuer des réactions organo-catalysées en phase micellaire aqueuse. Le passage du Pd de la phase organique à la phase aqueuse est assuré par des tensio-actifs (TA) développés par l’équipe CBSA de l’IBMM (C. Pépin &amp; F. Bonneté), et dont la structure vise à être optimisée afin de répondre aux contraintes liées à la récupération par voie hydrométallurgique du
APA, Harvard, Vancouver, ISO, and other styles
35

Othman, Mazin A. "Palladium-catalysed aerobic oxidative homocoupling reaction of arylboronic acids in aqueous micellar medium : kinetic and mechanistic studies." Thesis, Cardiff University, 2011. http://orca.cf.ac.uk/55140/.

Full text
Abstract:
This thesis is divided into five Chapters. The first Chapter introduces water and micellar solutions as reaction medium, catalysis, palladium catalysts, the Suzuki cross-coupling and the oxidative homocoupling of arylboronic acids. The second Chapter describes studies of the aerobic oxidative homocoupling reaction of arylboronic acids in aqueous micellar media using Pd(bimsulfide)Cl<sub> 2</sub> as a (pre) catalyst. Our results, in particular a bell-shaped pH-rate profile, favour a reaction mechanism where the rate-determining step is transmetalation involving a palladium-hydroxo complex and t
APA, Harvard, Vancouver, ISO, and other styles
36

Bouilhac, Cécile. "Nouvelle approche en catalyse supportée de polymérisation de l'éthylène : conception de supports organiques originaux." Bordeaux 1, 2007. http://www.theses.fr/2007BOR13482.

Full text
Abstract:
Les travaux décrits dans ce manuscrit ont trait à l’élaboration de nouveaux supports organiques pour la catalyse de polymérisation de l’éthylène. Dans une première approche, des étoiles de polystyrène portant à l’extrémité de chaque branche, des fonctions capables d’immobiliser ou de générer in situ des activateurs aluminiques de catalyseurs métallocènes et post-métallocènes ont été synthétisées par polymérisation radicalaire contrôlée (ATRP). La seconde approche est basée sur la micellisation de (co)polymères fonctionnels en solution et utilise ces structures micellaires comme nanoréacteurs p
APA, Harvard, Vancouver, ISO, and other styles
37

Souza, Franciane Dutra de. "Efeito da adição de sais nas propriedades físico-químicas de micelas normais e reversas formadas por surfactantes dipolares iônicos." Florianópolis, SC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/99224.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em Química<br>Made available in DSpace on 2013-03-04T17:54:32Z (GMT). No. of bitstreams: 1 301318.pdf: 1961320 bytes, checksum: db9fc3bdf31d72497d8746a4360a124f (MD5)<br>Neste trabalho, estudaram-se as interações de cátions com micelas normais de sulfobetaína. A variação do potencial zeta mostrou que a incorporação de cátions pelas micelas é dependente da valência e tamanho das espécies positivas: cátions trivalentes interagem melhor que di- e monovalentes. També
APA, Harvard, Vancouver, ISO, and other styles
38

Hicks, Tanya Temaca. "Preparation, Characterization, and Activity of Mono-Dispersed Supported Catalysts." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4765.

Full text
Abstract:
Mono-dispersed supported Ni catalysts were synthesized using the water-CTAB-hexanol reverse micellar system. The core of the reverse micelles contained an aqueous solution of NiCl2. Dynamic light scattering measurements showed that microemulsions having a water-to-surfactant molar ratio, Wo, of 10 lead to reverse micelles with lowest polydispersity, longest stability, and size range of interest. At an oil-to-aqueous phase ratio of 2, the diameter of the reverse micelles was found to increase with Wo in a linear fashion. At higher values of Wo (i.e. 25-30), the polydispersity was found to i
APA, Harvard, Vancouver, ISO, and other styles
39

Hu, Ping. "Design of oxidation-sensitive polymer micelles for inflammation targeting." Thesis, University of Manchester, 2012. https://www.research.manchester.ac.uk/portal/en/theses/design-of-oxidationsensitive-polymer-micelles-for-inflammation-targeting(8ec02724-aeef-4ce8-ac2d-a3186de6267e).html.

Full text
Abstract:
The research presented in this thesis focuses on the molecular design of an oxidation-sensitive nanocarrier and its enzyme conjugate with a view of their application in the field of biomaterials. I have polarised our attention on a specific class of polymers, the polysulfides, for their environmental responsiveness (towards oxidising substances, a condition often associated with inflammatory reactions), interesting physico-chemical properties, ease of the preparation and multiple possibilities for further modifications and bioconjugations, which are perfectly suitable for the development as sy
APA, Harvard, Vancouver, ISO, and other styles
40

Faria, Athos Cabeda. "Estudo comparativo entre catalise por micelas e polimeros em reações de hidrolise alcalina." reponame:Repositório Institucional da UFSC, 1994. http://repositorio.ufsc.br/xmlui/handle/123456789/76157.

Full text
Abstract:
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciencias Fisicas e Matematicas<br>Made available in DSpace on 2012-10-16T07:49:36Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-08T18:43:52Z : No. of bitstreams: 1 98253.pdf: 1369320 bytes, checksum: 12e5b1b1341edc77ee1479aa1a95db24 (MD5)<br>O presente trabalho apresenta a preparação de dois polímeros do tipo ioneno e um estudo cinético comparativo da hidrólise do anidrido benzóico (pHs 9,00 e 8,50) e benzoato de p-nitrofenila (pH 10,00) através de espectrospcopia UV. A hidrólise catalítica do anidrido benzóico
APA, Harvard, Vancouver, ISO, and other styles
41

KESSOUM, M. ABDELKRIM. "Contribution a l'etude de la catalyse micellaire sur les reactions d'additions nucleophile aromatique complexes de yaovsky." Paris 6, 1992. http://www.theses.fr/1992PA066662.

Full text
Abstract:
Dans le cadre de l'effet des milieux micellaires sur les reactions d'addition nucleophile, nous avons etudie cinetiquement les formations et les decompositions de quelques complexes de meisenheimer et de janovsky en milieu micellaire. En raison des effets d'extraction et des transferts d'especes chargees entre les deux phases micelle et solution nous avons pu realiser pour la premiere fois l'etude cinetique et thermodynamique de quelques reactions de janovsky du 1,3,5-trinitrobenzene et du 1,3-dinitronaphtalene dans un tel milieu. Soulignons que dans l'eau pure les complexes carbones du tnb et
APA, Harvard, Vancouver, ISO, and other styles
42

Hicks, Tanya Temaca. "Preparation, characterization, and activity of mono-dispersed supported catalylsts [sic]." Available online, Georgia Institute of Technology, 2004:, 2004. http://etd.gatech.edu/theses/available/etd-07212004-102914/unrestricted/hicks%5Ftanya%5Ft%5F200412%5Fms.pdf.

Full text
Abstract:
Thesis (M.S.)--Chemical Engineering, Georgia Institute of Technology, 2005.<br>Agrawal, Pradeep K., Committee Chair ; Bommarius, Andreas S., Committee Member ; Schork, F. Joseph, Committee Member. Includes bibliographical references.
APA, Harvard, Vancouver, ISO, and other styles
43

Jallet, Vincent. "Conception de polyoxométallates amphiphiles pour la catalyse d'oxydation en microémulsion." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066275/document.

Full text
Abstract:
L'avenir de l'industrie chimique réside dans le développement de nouvelles méthodes de synthèse, et notamment dans la mise en place de réactions catalytiques et l'utilisation de milieux réactionnels performants. Ainsi, le but de ce travail de recherche doctorale était de développer des tensioactifs catalytiques à base de polyoxométallates pour effectuer des réactions de catalyse d'oxydation de substrats organiques en microémulsion. Ce travail de recherche a débuté par la synthèse et la caractérisation de nouvelles familles de tensioactifs à base de polyoxométallates, et le contrôle de la natur
APA, Harvard, Vancouver, ISO, and other styles
44

Hoang, Minh Duc. "Conception et synthèse d’auto-assemblages d’amphiphiles diacétyléniques pour les applications en nanomédecine et en catalyse." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLS371/document.

Full text
Abstract:
Les travaux décrits dans ce manuscrit portent sur l’étude de nanostructures obtenues par auto-assemblages d’amphiphiles diacétyléniques polymérisables. Essentiellement deux familles de composés ont été étudiées (micelles sphériques et rubans en bicouches) et valorisées, d'une part, pour des applications biomédicales et, d’autre part, pour la catalyse. Dans un premier temps, des micelles cationiques polymérisées assemblées à partir d’amphiphiles diacétyléniques sont synthétisées. Ces micelles ont été valorisées pour la prise en charge et la transfection d’ARN interférents in vitro. Ensuite, un
APA, Harvard, Vancouver, ISO, and other styles
45

Dani, Silvia. "Catalise micelar da decomposicao do p-nitrofenildifenifosfato na presenca de surfatantes com um e dois grupos lipofilicos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1991. http://hdl.handle.net/10183/26886.

Full text
Abstract:
Os propósitos deste trabalho foram o estudo do processo de agregação em água dos surfatantes brometo de cetildi metiletilamônio, brometo de dilaurildimetilamônio e cloreto de metildodecilbenziltrimetilamônio, como também, do efeito catalítico destes surfatantes na decomposição do éster p-nitrofenildifenilfosfato em meio básico. O éster de fosfato é um inibidor da acetilcolinesterose e é comumente empregado como modelo de gases que atuam sobre o sistema nervoso. O processo de agregação foi estudado principalmente com técnicas de tensiometria. A concentração micelar crítica (CMC) dos surfatantes
APA, Harvard, Vancouver, ISO, and other styles
46

Oliveira, Maria Rita Perez de. "Estudo das condições de hidrólise de álcoois primários sulfatados." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-19072011-165944/.

Full text
Abstract:
Álcoois primários sulfatados de cadeia longa, usualmente na forma de sais de sódio, são tensoativos de grande interesse comercial utilizados em diversas formulações de higiene pessoal e limpeza doméstica. Eles são produzidos comercialmente através da reação de álcoois etoxilados com trióxido de enxofre seguida de imediata neutralização com hidróxido de sódio. O produto formado é uma solução neutra de álcool primário etoxilado sulfatado em água. Sabe-se que a armazenagem desse produto por longos períodos de tempo em temperaturas elevadas pode levar à hidrólise completa, mas, em condições normai
APA, Harvard, Vancouver, ISO, and other styles
47

Thamrin. "Synthèses et perspectives d'applications de nouveaux composés oxygènes, thiono-organiques gras et tetrazines grasses d'origine végétale." Toulouse, INPT, 1997. http://www.theses.fr/1997INPT048G.

Full text
Abstract:
Une gamme d'ethers gras satures, monoinsatures, lineaires et ramifies a ete synthetise dans un systeme polyphasique emulsionnant en catalyse micellaire. La phase huile est constituee d'un surfactant (sels d'ammonium quaternaires), d'un co-surfactant (alcool gras) et d'un bromoalcane. Selon la nature de l'alcool gras utilise, les ethers satures ont ete obtenus en un cycle de reaction alors que les ethers gras monoinsatures ont ete prepares en deux cycles. Les ethers obtenus possedent des proprietes lubrifiantes comparables aux esters correspondants (viscosite, indice de viscosite, point d'ecoul
APA, Harvard, Vancouver, ISO, and other styles
48

Silva, Idélcio Nogueira da. "Distribuição e reatividade de íons em soluções de micelas e vesículas." Universidade de São Paulo, 1995. http://www.teses.usp.br/teses/disponiveis/46/46131/tde-05022016-092756/.

Full text
Abstract:
A extensão relativa da dissociação iônica (&#945;) de micelas de cloreto de hexadecildimetilamônio (CTACI), brometo de hexadecildimetilamônio (CTAB), vesículas de cloreto de dioctacecildimetilamônio (DODAC) e brometo de dioctadecildimetilamônio (DODAB) foram determinadas usando um método de dediazonização. O método de dediazonização consiste na determinação de produtos resultantes da lenta decomposição espontânea de tetrafluorborato de 2,4,6-trimetilbenzenodiazônio, seguida pela reação rápida do cátion fenílico com nucleófilos presentes no meio. Foi demostrado que este método determina a compo
APA, Harvard, Vancouver, ISO, and other styles
49

Makhlouf, Thabet. "Etude de la catalyse acide générale dans la réaction d'hydrolyse d'orthoesters en milieu micellaire inversé de dioctysulfoccinate de sodium." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37615571p.

Full text
APA, Harvard, Vancouver, ISO, and other styles
50

Carion-Taravella, Brigitte. "Formation de vésicules par voie enzymatique : application à la transition micelle-vésicule." Compiègne, 1998. http://www.theses.fr/1998COMP1101.

Full text
Abstract:
Une étude physico-chimique d'une catalyse en milieu microstructuré auto-évolutif est proposée. Une enzyme est utilisée afin de faire auto-évoluer un système mixte lipide-détergent, de modifier la nature des phases en présence, et de former des vésicules. Des vésicules de dipalmitoylphosphatidylcholine (DPPC)-dodécyl-Beta-glucopyranoside (DG) sont fabriquées à partir de micelles mixtes DPPC-dodécyl - Beta-D-maltoside (DM) suite à l'hydrolyse du DM par l'amyloglucosidase en DG. Les diagrammes pseudo-binaires DPPC-DM et DPPC-DG en milieu dilué sont étudiés dans l'intervalle de température 10-45°C
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Micellar catalysi' for other source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography