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Analytical Chemistry and Electrochemistry
| Promotors: |
B.Gilbert |
| Reasearch Scientists : |
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| Adress : |
Sart-Tilman, B6c, B-4000 Liège |
| Telephone : |
32-4-3663567 |
| Fax : |
32-4-3662927 |
| E-mail : |
B.Gilbert@ulg.ac.be |
| Website : |
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Current Research Interests :
Development of computerized analytical techniques in electrochemistry and vibrational spectroscopy remarkable for their sensitivity, their speed or their diagnostic power. Analyses of molten salts at high or low temperatures by Raman spectrometry. To study the relationship between a solvent composition and its structure with the prediction of the existence and the extent of a chemical reaction. The main application is to study the structure of molten haloaluminates in two directions : a) the cryolitic mixtures (solvents of alumina in the electrolytic production of aluminium); b) the room temperature molten salts (the haloaluminates and the antimony, phosphorus and boron fluorides) (metal deposition and analysis of the relationship solvent structure-catalytic properties). Application to the analysis of various problems of industrial interest (gels, carbon film deposits, etc.).
Experimental techniques used :
Electrochemical methods of analysis (potentiometry, polarography and related techniques, coulometry, ....). Development of computerized electrochemistry. Optical spectroscopies: Absorption (UV-Visible, IR) , Emission (Flame, ICP) , Raman scattering. X rays Fluorescence and diffraction. Access to an ICP-MS.
Analyses by chemical, physico-chemical or physical methods of various materials: in particular, application of Raman spectrometry to specific industrial problems (glass and petroleum industry) and recently to the analysis of ancient art works.
Specialized Equipments : Raman spectrometers: two high performance computerized Raman spectrometers, home made, provided with furnaces designed for the investigation of very high temperature corrosive liquids ; a micro-Raman spectrometer Dilor provided with a microscope and a remote sensor head coupled by optical fibers; and FT Raman accessory coupled to an FT Bruker IFS66 IR spectrometer. These instruments are provided with four types of lasers allowing excitation of Raman spectra from the blue (488 nm) to the near IR (1064nm). Dry boxes for the manipulation of air sensitive materials.
Selected Recent Publications :
1. Koulic, C., Yin, Z., Pagnoulle, C., and Jérôme, R. (2001) Polymer, 42, 2947-2957. Premade versus in situ formed compatibilizer at the PS/PMMA interface: contribution of the Raman confocal microscope to the fracture analysis.
2. Koulic, C., Yin, Z., Gilbert, B., and Jérôme, R. (2001) Proceedings of the Annual Meeting of the Adhesion Society, 24, 177-179. Premade versus in situ formed compatibilizer at the PS/PMMA interface: Contributions of the Raman confocal microscopy to the fracture analysis.
3. Gilbert, B., Dechamps, S., and Olivier, H. (2002) Thirteenth International Symposium on Molten Salts (The Electrochemical Society, Pennington , NJ ), X, 1-8. Quantitative study by Raman spectroscopy of the stability of 1-methyl-3-butylimidazolium chloride/AlCl3/ethylAlCl2 mixed molten salts in presence of an aliphatic hydrocarbon.
4. Auguste, F., Tkatcheva, O., Mediaas, H., Oestvold, T., and Gilbert, B. (2002) Inorg.Chem., X, x-x. The dissociation of fluoroaluminates in FliNaK and CsF-KF molten mixtures; a Raman spectroscopy and solubility study.
5. Gilbert, B., Denoel, S., Weber, G., and Allart, D. (2002) The Analyst, X, x-x. Analysis of green copper pigments in illuminated manuscripts by micro-Raman spectroscopy.
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