Self-organization of surfactants on metal particles and supports  Page description

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Details of project

  
Identifier
42521
Type K
Principal investigator Király, Zoltán
Title in Hungarian Tenzidek önrendeződése fémfelületeken és hordozókon
Title in English Self-organization of surfactants on metal particles and supports
Panel Chemistry 1
Department or equivalent Department of Physical Chemistry and Materials Science (University of Szeged)
Participants Berger, Ferenc
Haraszti, Tamás
Mastalir, Ágnes
Veisz, Bernadett
Starting date 2003-01-01
Closing date 2006-12-31
Funding (in million HUF) 7.354
FTE (full time equivalent) 0.00
state closed project





 

Final report

  
Results in Hungarian
Adszorpciós mikrokalorimetriával jellemeztük tenzidek adszorpcióját (az adszorpciós réteg komplex szerkezetét) nemesfém nanorészecskéken, hidrofil és hidrofób katalizátor hordozókon. Új típusú kolloidkémiai módszereket dolgoztunk ki tenzidekkel stabilizált, méret- és morfológia-kontrollált nemesfém nanorészecskék előállítására réteges szerkezetű hordozók (montmorillonit; hidrotalcit) interlamelláris terében. A katalizátorokat szerkezetérzékeny vizsgálati módszerekkell jellemeztük (XRD, TEM, HR-TEM, IR-Raman és UV-vis spektroszkópia, titrációs- és áramlásos mikrokalorimetria). Az anyagok aktív és szelektív heterogén katalizátoroknak bizonyultak folyadékfázisú hidrogénezési reakciókban; alkinek alkénekké történő átalakításában. Hidrogénszorpciós méréseink szerint a Pd/H béta-hidrid képződés nem befolyásolja e reakciók kötésszelektivitását. Adszorpciós-folyadékkromatográfiás eljárást dolgoztunk ki hordozós átmenetifém katalizátorok diszperzitásának meghatározására. A tenzidek önrendeződésén alapuló ''in-situ'' módszert fejlesztettünk ki átmenetifém és átmenetifém ötvözet nanorészecskék előállítására MCM-41 hordozók mezopórusaiban. A katalizátorok nagy aktivitást és szelektivitást mutattak alkinek alkénekké történő hidrogénezési reakcióiban.
Results in English
Measurements of the adsorption of surfactants on noble metal nanoparticles and hydrophilic and hydrophobic support materials have been performed by adsorption microcalorimetry. Surfactant-stabilized, size- and morphology-controlled noble metal nanoparticles have been synthesized and deposited in the interlamellar space of layer-structured materials (montmorillonite; hydrotalcite) by novel colloid chemical methods. The heterogeneous catalysts have been characterized by structure-sensitive instrumental methods (XRD, TEM, HR-TEM, IR-Raman and UV-vis spectroscopy, titration- and flow-microcalorimetry). These catalysts proved to be active and selective in the liquid-phase hydrogenations of alkynes to alkenes. Hydrogen sorption measurements indicated that bond-selectivity is not affected by Pd/H beta-hydride formation. A novel adsorption-liquid chromatographic method has been developed for the determination of the dispersion of supported noble metal catalysts. The self-organization of surfactants has been utilized for the ''in-situ'' generation of noble metal and alloyed noble metal nanoparticles in MCM-41 host matrices. These materials proved to be active and selective in the liquid-phase hydrogenations of aklynes to alkenes.
Full text http://real.mtak.hu/645/
Decision
Yes





 

List of publications

  
B.Veisz, Z.Király: Size Selective Synthesis of Cubooctahedral Palladium Particles Mediated by Metallomicelles., Langmuir 19: 4817-4824, 2003
Á.Mastalir, Z.Király: Pd Nanoparticles in Hydrotalcite: Mild and Highly Selective Catalysts for Alkyne Semihydrogenation., Journal of Catalysis 220: 372-381, 2003
Z.Király, G.H.Findenegg, Á.Mastalir:: Chain-Length Anomaly in the Two-Dimensional Ordering of the Cationic Surfactant CnTAB at the Graphite/Water Interface Revealed by Advanced Calorimetric Methods., Journal of Physical Chemistry B 107: 12492-12496, 2003
Á.Mastalir, Z.Király, B.Veisz: Novel Pd-hydrotalcite Clays as Highly Selective Catalysts in Alkyne Semihydrogenation under Mild Conditions., 18th North American Catalysis Society Meeting, Cancun, 1-6 June 2003, Technical Program, O 128., 2003
Z.Király, B.Veisz, Á.Mastalir: Catalytic Probes of the Surface Statistics of Palladium Crystallites Deposited on Montmorillonite, 18th North American Catalysis Society Meeting, Cancun, 1-6 June 2003, Poster Program, P 204, 2003
Z.Király, B.Veisz, Á.Mastalir: Catalytic Investigation of the Surface Statistics of Cubooctahedral Pd Particles Prepared in Normal Micellar Systems., Europacat-VI, Innsbruck, 31 August-4 September 2003, Poster Programme, A1-013., 2003
Z.Király, B.Veisz, Á.Mastalir: CS2 Poisoning of Size-Selective Cubooctahedral Pd Particles in Styrene Hydrogenation., Catalysis Letters 95: 57-59, 2004
Á. Mastalir, Z. Király, F. Berger: Comparative Study of Size-Quantized Pd-Montmorillonite Catalysts for Liquid-Phase Alkyne Semihydrogenations., 13th International Congress on Catalysis (ICC) Paris, 11-16 July 2004, Book of Abstracts, P1-338.., 2004
Á.Mastalir, Z.Király, F.Berger: Comparative Study of Size-Quantized Pd-Montmorillonite Catalysts in Liquid-Phase Semihydrogenation of Alkynes., Applied Catalysis A General 269: 161-168, 2004
Z.Király, Á.Mastalir, G.H.Findenegg: Adsorption at Solid/Solution Interfaces Studied by Advanced Calorimetric Methods., Conference on Calorimetry and Thermal Effects in Catalysis, Villeurbanne, Lyon, 6-9 July 2004, Abstracts O19., 2004
Gy.Szöllösi, Á.Mastalir, Z.Király, I Dékány:: Preparation of Platinum Nanoparticles in the Presence of a Chiral Modifier and Catalytic Applications in Chemoselective and Asymmetric Hydrogenations., Journal of Materials Chemistry 15: 2464-2469, 2005
Z.Király, G.H.Findenegg:: Pulsed-Flow Microcalorimetric Study of the Template-Monolayer Region of Nonionic Surfactants Adsorbed at the Graphite/Water Interface., Langmuir 21: 5047-5054, 2005
Á.Mastalir, Z.Király:: Liquid-Phase Semihydrogenation of Alkynes on Pd-Montmorillonite Catalysts with Controlled Pd Particle Size., 19th North American Catalysis Society Meeting, Philadelphia, 22-27 May 2005, Poster, Abstracts P 202., 2005
Z.Király, Á.Mastalir, G.H.Findenegg:: Two-Dimensional Ordering of of the Cationic Surfactants CnTAB at the Graphite/Water Interface Studied by Advanced Calorimetric Methods., Russian International Conference on Chemical Thermodynamics, Moscow, 27 June - 2 July 2005, Poster, Book of Abstracts Vol. II., PV-76., 2005
Á.Mastalir, Z.Király, I.Dékány:: Generation of Nanosized Pd Clusters in Layered Double Hydroxides and Applications in Hydrogenation Reactions., 19th Conference of the European Colloid and Interface Society (ECIS), Geilo, Norway, 18-23 September 2005, Poster, Book of Abstracts p.240., 2005
Z.Király, Á.Mastalir, G.H.Findenegg:: Pulsed-Flow Calorimetry: a Versatile Tool for the Study of Nonreversible Adsorption Phenomena at Solid/Solution Interfaces., 5th International Chemical Congress of Pacific Basin Societies (Pacifichem 2005), Honolulu, 15-20 December 2005, Lecture, Abstract Viewer, Program Number 904., 2005
Z.Király, Á.Mastalir, G.H.Findenegg: Adsorption of Dodecyltrimethylammonium Bromide and Sodium Bromide on Gold Studied by Liquid Chromatography and Flow Adsorption Microcalorimetry., Langmuir 22: 3207-3213, 2006
Á.Mastalir, B.Rácz, Z.Király, Á.Molnár: In Situ Generation of Pd Nanoparticles in MCM-41 and Catalytic Applications in Liquid-Phase Alkyne Hydrogenations., Journal of Molecular Catalysis A: Chemical 264: 170-178, 2006
Z.Király, Á.Mastalir, Á.Császár, H.Demir, D.Uner, G.H.Findenegg: Liquid Chromatography as a Novel Method for Determination of the Dispersion of Supported Pd Particles., Journal of Catalysis 245: 267-271, 2007
A.B.Páhi, Z.Király: Microcalorimetric Study of the Micellization of a Novel Gemini Surfactant in Aqueous Solution in the Presence of Structure-Maker and Structure-Baker Additives., 3rd Zsigmondy Colloquium of the Deutsche Kolloidgesellschaft, Berlin, 6-7 April 2006, Book of Abstracts P84., 2006
H.Demir, Z.Király, D.Uner: Microcalorimetric Characterization of Alumina-Supported Pd and Pt Catalysts., 5th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT 5), Tokyo, 23-28 July 2006, Abstracts P415., 2006
Á.Mastalir, B.Rácz, Z.Király, Á.Molnár: Preparation and Characterization of Novel Pd-MCM-41 Catalysts., 5th Tokyo Conference on Advanced Catalytic Science and Technology (TOCAT 5), Tokyo, 23-28 July 2006, Abstracts P127., 2006
Z.Király, G.H.Findenegg: Pulsed-Flow Microcalorimetry: a Versatile Tool for the Study of Non-Reversible Adsorption Phenomena at Solid/Solution Interfaces., 20th Conference of the European Colloid and Interface Society (ECIS), Budapest, 17-22 September 2006, Book of Abstracts P33, 2006
Á.Mastalir, B.Rácz, Z.Király, Á.Molnár, I.Dékány: Controlled Colloid Synthesis and Catalytic Application of Palladium Nanoparticles in MCM-41., 20th Conference of the European Colloid and Interface Society (ECIS), Budapest, 17-22 September 2006, Book of Abstracts P342, 2006
D.Varga, A.B.Páhi, Z.Király, Á.Császár, Á.Mastalir: Thermodynamics of the Micelle Formation of the Chiral Surfactant Dodecylmethylephedrinium Bromide., 20th Conference of the European Colloid and Interface Society (ECIS), Budapest, 17-22 September 2006, Book of Abstracts P262, 2006
Á.Mastalir, Á.Császár, Z.Király: Liquid-Phase Dispersion Measurements of Supported Pd Particles by Liquid Chromatography and Pulsed-Flow Adsorption Microcalorimetry., 12th International Conference on Surface and Colloid Science (IACIS), Beijing, 15-20 October 2006, Book of Abstracts P115, 2006
A.B.Páhi, Z.Király: Microcalorimetric Study of the Micelle Formation of the Nonionic Surfactant Surfynol-465., 12th International Conference on Surface and Colloid Science (IACIS), Beijing, 15-20 October 2006, Book of Abstracts P88, 2006




 

Events of the project

  
2010-04-12 15:52:03
Kutatóhely váltás
A kutatás helye megváltozott. Korábbi kutatóhely: Kolloidkémiai Tanszék (Szegedi Tudományegyetem), Új kutatóhely: Fizikai Kémiai és Anyagtudományi Tanszék (Szegedi Tudományegyetem).



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