IMBB - WebCalendar

Web Calendar IMBB FORTH

Next

Previous

May 2015
Public Access

Category: All

	Sun	Mon	Tue	Wed	Thu	Fri	Sat
W K 1 8	26	27	28	29	30 12:30» Public Presentation of Doctoral Thesis	01	02
W K 1 9	03	04	05	06 12:00 - 13:00» IMBB SEMINAR	07	08 12:00 - 13:00» IMBB SEMINAR 16:00» MST colloquium	09
W K 2 0	10	11	12	13	14	15 11:50» Chemistry Colloquium 12:00 - 13:00» IMBB SEMINAR	16
W K 2 1	17	18 12:00 - 13:00» IMBB COLLOQUIUM	19	20	21 15:00 - 16:00» SEMINAR - MEDICAL SCHOOL UNIVERSITY OF CRETE	22 11:50 - 12:50» CHEMISTRY COLLOQUIUM 12:00 - 13:00» IMBB COLLOQUIUM 16:00 - 17:00» MST COLLOQUIUM	23
W K 2 2	24	25	26	27 12:00 - 13:00» IMBB SEMINAR	28 09:40 - 14:40» Plant RNA Pathogens Workshop	29 09:40 - 12:40» Plant RNA Pathogens Workshop 16:00 - 17:00» MST COLLOQUIUM	30
W K 2 3	31	01	02	03	04 16:00» MST colloquium	05 11:00» Public Presentation of Doctoral Thesis 12:00 - 13:00» IMBB SEMINAR	06

TASKS
!		Title		Due		%
!		Title		Due		%

Time:: 16:00 - 17:00
Location:: Department of Physics Bldg., Voutes, 3rd floor Seminar Room
Description:: MST colloquium
Friday, May 22, 2015

Speaker
Ioannis Lykakis

Affiliation
Department of Chemistry, Aristotle University of Thessaloniki

Title
Organic transformations catalyzed by supported noble metal nanoparticles and polyoxometalates

Location
Department of Physics Bldg., Voutes, 3rd floor Seminar Room
Time
16:00

Language
English

Abstract
For catalytic processes, an attractive approach is the use of a solid, recyclable catalyst and environmentally friendly reagents. The use of supported catalysts on a well ordered metal oxide surface for heterogeneous catalysis offers several advantages on the catalyst reusability and the regio- and chemo-selectivity of the reaction process. Thus, herein we outline a research study aimed to gain insight into the catalytic applications of new AuNPs and AgNPs heterogeneous systems,1 as well as supported polyoxometalates2 in order to afford new catalytic chemical transformations, based on the combination of metal nanoparticles and the surface of the support properties.1-4 For this reason, the catalytic reduction of nitro aromatic compounds by AuNPs or AgNPs supported catalysts using NaBH4 and 1,1,3,3-tetramethyldisiloxane (TMDS) as hydrogen donor molecules5 and the selective oxidation of aryl amines into nitrosoarenes with H2O2 catalyzed by Au/TiO2 were studied. In parallel, the general applicability and the mechanistic approach of the selective photooxidation of various benzyl alcohols into the corresponding carbonyl compounds, over mesoporous CdS or POM-TiO2 assemblies, using O2 as green oxidant were also studied.6,3 Finally, detail mechanistic studies based on kinetic isotope effects, on Hammett type-kinetics and product analysis were performed.
References
[1] (a) Mitsudome, T.; Kaneda, K. Green Chem. 2013, 15, 2636; (b) Stratakis, M.; Garcia, H. Chem. Rev. 2012, 112, 4469; (c) Zhang, Y.;Cui, X.; Shi, F.; Deng, Y. Chem. Rev. 2012, 112, 2467.
[2] Hill, C. L., (Ed.) Chem. Rev., 1998, 98, 1; J. Mol. Catal. A: Chem., 2007, 262, 1.
[3] Tzirakis, M. D.; Lykakis, I. N.; Orfanopoulos, M. Chem. Soc. Rev., 2009, 38, 2609.
[4] Corma, A.; Serna, P. Science 2006, 313, 332.
[5] (a) Tamiolakis, I.; Fountoulaki, S.; Vordos, N.; Lykakis, I. N.; Armatas, G. S. J. Mater. Chem. A, 2013, 1, 14311; (b) Fountoulaki, S.; Daikopoulou, V.; Gkizis, P. L.; Tamiolakis, I.; Armatas, G. S.; Lykakis, I. N. ACS Catalysis, 2014, 4, 3504.
[6] Tamiolakis, I.; Lykakis, I. N.; Katsoulidis, A. P.; Armatas, G. S.; Chem. Commun., 2012, 48, 6687.