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Relevant bibliographies by topics / Catalisi micellare

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Academic literature on the topic 'Catalisi micellare'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

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Journal articles on the topic "Catalisi micellare"

1

Broxton, Trevor J. "Micellar Catalysis of Organic Reactions. XXXVIII A Study of the Catalytic Effect of Micelles of 3-Hydroxymethyl-1-tetradecylpyridinium Bromide on Amide Hydrolysis and Nucleophilic Aromatic Substitution." Australian Journal of Chemistry 51, no. 7 (1998): 541. http://dx.doi.org/10.1071/c98053.

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The preparation of 3-hydroxymethyl-1-tetradecylpyridinium bromide and its use as a catalyst of nucleophilic aromatic substitution and also amide hydrolysis are reported. It was found that the hydroxydehalogenation of nitro-activated aryl halides was much faster in these micelles than in the presence of cetyl(2-hydroxyethyl)dimethylammonium bromide. It was concluded that the increased catalysis of nucleophilic aromatic substitution by this micelle was due to a faster decomposition of the aryl micellar ether which must occur before the phenolate product is released. No such difference in the two

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Broxton, TJ, JR Christie, and RPT Chung. "Micellar Catalysis of Organic Reactions. XXVI. SNAr Reactions of Azide Ions." Australian Journal of Chemistry 42, no. 6 (1989): 855. http://dx.doi.org/10.1071/ch9890855.

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The azidodehalogenation of a number of aromatic compounds has been studied in the presence of micelles of cetyltrimethylammonium bromide (ctab). The variation of the observed rate of reaction with ctab concentration has been treated by using the model of Rodenas and Vera to determine the rate constant for reaction in the micellar pseudo-phase, k2m, the binding constant of the substrate to the micelle, Ks, and the nucleophile-micellar counter ion exchange constant KAzBr :. The ratio of the rate constants in the micellar pseudo-phase and in water varied between 0.9 and 52. For reactions involvin

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KALLOL, K. GHOSH, and K. SAR SANTOSH. "Kinetic Studies of Alkaline Hydrolysis of N-Phenylbenzohydroxamic Acid in the Presence of Micelles." Journal of Indian Chemical Society Vol. 72, Sep 1995 (1995): 597–601. https://doi.org/10.5281/zenodo.5909403.

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School of Studies in Chemistry, Pt. Ravishankar Shukla University. Raipur-492 010 <em>Manuscript received 14 September 1993, revised 4 January 1994, accepted 1 March 1994</em> The alkaline hydrolysis of <em>N</em>-phenylbenzohydroxamic acid has been studied under micellar (<em>k</em><sub>Ψ</sub>) and nonmicellar (<em>k</em><sub>w</sub>) conditions using cationic (cetyltrimethylammonium bromide, cetylpyridinium chloride), anionic (sodium lauryl sulphate), and non-ionic (Triton X-100) micellar agents. The results are explained by the pseudophase ion-exchange model. Both the cationic and anio

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Cibulka, Radek, Lenka Baxová, Hana Dvořáková, et al. "Catalytic effect of alloxazinium and isoalloxazinium salts on oxidation of sulfides with hydrogen peroxide in micellar media." Collection of Czechoslovak Chemical Communications 74, no. 6 (2009): 973–93. http://dx.doi.org/10.1135/cccc2009030.

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Three novel amphiphilic alloxazinium salts were prepared: 3-dodecyl-5-ethyl-7,8,10-trimethylisoalloxazinium perchlorate (1c), 1-dodecyl-5-ethyl-3-methylalloxazinium perchlorate (2b), and 3-dodecyl-5-ethyl-1-methylalloxazinium perchlorate (2c). Their catalytic activity in thioanisole (3) oxidation with hydrogen peroxide was investigated in micelles of sodium dodecylsulfate (SDS), hexadecyltrimethylammonium nitrate (CTANO3) and Brij 35. Reaction rates were strongly dependent on the catalyst structure, on the type of micelles, and on pH value. Alloxazinium salts 2 were more effective catalysts th

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Drennan, Catherine E., Rachelle J. Hughes, Vincent C. Reinsborough, and Oladega O. Soriyan. "Article." Canadian Journal of Chemistry 76, no. 2 (1998): 152–57. http://dx.doi.org/10.1139/v97-226.

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Kinetic studies through stopped-flow spectroscopy were undertaken in the dilute solution range of anionic surfactants where pronounced rate enhancement or inhibition of Ni2+-ligand complexations is often observed at surfactant concentrations much below the critical micelle concentration (CMC). The results are interpreted in terms of Ni-surfactant micelles as the agents responsible for the rate changes in dilute surfactant solution. At higher surfactant concentrations these micelles are transformed into mixed micelles (counterion and size changes), eventually becoming normal surfactant micelles

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Greencorn, David J., Victoria M. Sandre, Emily K. Piggott, et al. "Asymmetric cationic gemini surfactants: an improved synthetic procedure and the micellar and surface properties of a homologous series in the presence of simple salts." Canadian Journal of Chemistry 96, no. 7 (2018): 672–80. http://dx.doi.org/10.1139/cjc-2017-0676.

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The micellar and morphological properties of symmetric, cationic gemini surfactants have been well studied in the literature as a function of nature and type of the spacer group and the length and type of hydrophobic chain. In this paper, we have examined the effects of tail asymmetry on the properties of a series of cationic surfactants, the N-alkyl-1-N′-alkyl-2-N,N,N′,N′-tetramethyldiammonium dibromide. A novel synthetic method is used to prepare a series of these surfactants and the consequences of asymmetry on micellar properties are presented. This new method has been shown to be more eff

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Leela, Kumari B. ,., P. Shyamala, and K. V. Nagalakshmi. "Catalysis in SDS and CTAB micellar media: Kinetics of base hydrolysis of Bis(2,4,6-tripyridyl-s-triazine) iron (II)." Research Journal of Chemistry and Environment 28, no. 1 (2023): 80–84. http://dx.doi.org/10.25303/281rjce80084.

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Kinetics of the hydrolysis of [Fe(tptz)2]2+ in the presence of NaOH has been studied in two different types of micellar media: SDS anionic and CTAB cationic. The reaction was found to be much faster in both the micellar media compared to aqueous medium (kSDS = 102.2 X10-4 mol-1dm3s-1, kCTAB = 43.92 X 10-4 mol-1dm3s-1, kaq = 0.115 X10-4 mol-1dm3s-1). The reaction obeys first order kinetics with respect to both the reactants in both the media. The rate constant versus surfactant profile shows a maximum in both cases which is characteristic of a bimolecular micelle catalyzed reaction. The kinetic

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MacInnis, Judith A., Greg D. Boucher, R. Palepu, and D. Gerrard Marangoni. "The properties of a family of two-headed surfactant systems: the 4-alkyl-3-sulfosuccinates 2. Surface properties of alkyl sulfosuccinate micelles." Canadian Journal of Chemistry 77, no. 3 (1999): 340–47. http://dx.doi.org/10.1139/v99-008.

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The micellar properties of a family of two-headed surfactants, the alkyl sulfosuccinates, were investigated employing fluorescence, ultra-violet spectroscopy, and acid-base titrations, as a function of the chain length of the surfactant. Polarity of the micellar interior was investigated using pyrene and the ionic probe 8-anilino-1-naphthalensulfonic acid ammonium salt (ANS). Pyrene I1/I3 ratios were used to probe the microenvironment of the probe in the palisade layer of the micelle. The pKa values of both of the anionic head groups were determined using acid-base titrations. Surface potentia

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Oranli, Levent, Pratap Bahadur, and Gérard Riess. "Hydrodynamic studies on micellar solutions of styrene–butadiene block copolymers in selective solvents." Canadian Journal of Chemistry 63, no. 10 (1985): 2691–96. http://dx.doi.org/10.1139/v85-447.

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Hydrodynamic radius of micelles of several block copolymers in different selective solvents (for both types of blocks) was determined from photon correlation spectroscopy. The boundaries of micellar solutions in heptane (good solvent for polybutadiene block) and dimethylformamide (good solvent for polystyrene block) were established for polymers in terms of their molecular mass and block composition. The photon correlation spectroscopy data in combination with intrinsic viscosities of block copolymers in selective solvents were used to determine micellar molecular mass and aggregation number.

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MacInnis, Judith A., R. Palepu, and D. Gerrard Marangoni. "A nuclear magnetic resonance investigation of the micellar properties of a series of sodium cyclohexylalkanoates." Canadian Journal of Chemistry 77, no. 11 (1999): 1994–2000. http://dx.doi.org/10.1139/v99-211.

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The micellar properties of a family of surfactants, the sodium cyclohexylalkanoates, have been investigated in aqueous solution using multinuclear NMR spectroscopy. C-13 chemical shift measurements have been used to determine both the cmc values and the micellar aggregation numbers (Ns values) of these surfactants. The cmc values and the degrees of counterion binding were estimated from 23Na chemical shift measurements. The critical micelle concentrations (cmc's) and the aggregation numbers determined from the NMR experiments indicate that these amphiphiles have high cmc's and low aggregation

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Dissertations / Theses on the topic "Catalisi micellare"

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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.

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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.

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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

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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.

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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

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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.

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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.

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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.

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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

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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.

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

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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

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

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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

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

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Books on the topic "Catalisi micellare"

1

Khan, Mohammad Niyaz. Micellar Catalysis. Taylor & Francis Group, 2020.

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Khan, Mohammad Niyaz. Micellar Catalysis. Taylor & Francis Group, 2006.

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Khan, Mohammad Niyaz. Micellar Catalysis. Taylor & Francis Group, 2010.

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Khan, Mohammad Niyaz. Micellar Catalysis. Taylor & Francis Group, 2006.

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Micellar catalysis. CRC/Taylor & Francis, 2007.

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Khan, Mohammad Niyaz. Micellar Catalysis (Surfactant Science). CRC, 2006.

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Fendler, Janos. Catalysis in Micellar and Macromoleular Systems. Elsevier Science & Technology Books, 2012.

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Book chapters on the topic "Catalisi micellare"

1

Moroi, Yoshikiyo. "Micellar Catalysis." In Micelles. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-0700-4_11.

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Nuyken, Oskar, Ralf Weberskirch, Thomas Kotre, Daniel Schönfelder, and Alexander Wörndle. "Polymers for Micellar Catalysis." In Polymeric Materials in Organic Synthesis and Catalysis. Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527601856.ch6.

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Kondo, Hiroki. "Micellar Catalysis of Pyridoxal-Dependent Reactions." In Biochemistry of Vitamin B6. Birkhäuser Basel, 1987. http://dx.doi.org/10.1007/978-3-0348-9308-4_61.

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Oehme, G., I. Grassert, and N. Flach. "Asymmetric Complex Catalysis in Micellar Systems." In Aqueous Organometallic Chemistry and Catalysis. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0355-8_24.

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Zuev, Yu F., B. Z. Idiyatullin, V. D. Fedotov, A. B. Mirgorodskaya, L. Ya Zakharova, and L. A. Kudryavtseva. "Structural Factors in Micellar Catalysis: NMR Self-Diffusion Study." In Magnetic Resonance in Colloid and Interface Science. Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-0534-0_68.

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Sirovski, F. S. "Phase-Transfer and Micellar Catalysis in Two-Phase Systems." In ACS Symposium Series. American Chemical Society, 1997. http://dx.doi.org/10.1021/bk-1997-0659.ch006.

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Gaboriaud, R., J. Lelièvre, G. Charbit, and F. Dorion. "Reaction Rate Control by Salt Effects in Micellar Catalysis." In Surfactants in Solution. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7981-6_7.

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Heijnen, J. H. M., V. G. de Bruijn, L. J. P. van den Broeke, and J. T. F. Keurentjes. "Micellar Catalysis as a Clean Alternative for Selective Epoxidation Reactions." In ACS Symposium Series. American Chemical Society, 2002. http://dx.doi.org/10.1021/bk-2002-0819.ch014.

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Manoury, Eric, Florence Gayet, Franck D’Agosto та ін. "Core-Cross-Linked Micelles and Amphiphilic Nanogels as Unimolecular Nanoreactors for Micellar-Type, Metal-Based Aqueous Biphasic Catalysis". У Effects of Nanoconﬁnement on Catalysis. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50207-6_7.

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Scarso, Alessandro, and Giorgio Strukul. "CHAPTER 12. Transition Metal Catalysis in Micellar Media: Much More Than a Simple Green Chemistry Promise." In Green Chemistry Series. Royal Society of Chemistry, 2019. http://dx.doi.org/10.1039/9781788016131-00268.

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Reports on the topic "Catalisi micellare"

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Betty, Rita G., Mark D. Tucker, Gretchen Taggart, et al. Enhanced Micellar Catalysis LDRD. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1096958.

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