Joint Research Group of Bulk and Surface Reactions of Solids

Team head:  Roman Dziembaj, Ph.D.   Professor   Staff: 13   Team leaders:  Prof. Andrzej Baranski, Ph.D.   Prof. Roman Dziembaj, Ph.D.   Prof. Agnieszka Pattek, Ph.D.

The joint group consists of the TG/DTA/DSC Division of the Regional Laboratory, the Group of Catalysis and Solid State Chemistry II and the Group of Heterogeneous Reaction Kinetics (both groups are from the Faculty of Chemistry of the Jagiellonian University).

Research topics:

• bulk reactions - redox processes and phase transformations in metals and metal oxides, characterization of industrial catalysts (especially problems of activation and deactivation), kinetics of solid state reactions - modelling, gasification of carbon materials;
• surface reactions - adsorption/desorption phenomena, catalytic reactions, segregation phenomena and poisoning of catalysts, thermal desorption of alkaline metal promotors, carbon deposition; modelling of bulk and surface reactions;
• acidity and ageing of paper - joint project for the whole Regional Laboratory in collaboration with the Jagiellonian Library, Kraków and the National Library, Warszawa (project leader: Prof. Andrzej Baranski)

Research equipment:

• Thermoanalyzer (Metler) reconstructed and computerized
• TG/DTA/DSC analyzer (NETZSCH)
• ESCA 100 (VSW) with XPS, AES, ISS, MS
• TPR/TPD equipment with sensitive GC and MS detectors
• Semi-automated catalytic reactors
• Access to Mössbauer spectrometer.

International collaboration:

• Institut fuer Angewandte Chemie, Berlin Adlershof , Germany (Prof. M. Baerns),
• Universitaet Leipzig, Germany (Prof. H. Papp),
• Friedrich-Alexander-Universitaet, Erlangen, Germany (Prof. G. Wedler),
• Université P. et M. Curie, Paris, France (Prof. M. Che, Prof. G. Djega-Mariadassou).

Contact:

Selected publications:

• K. Engvall, A. Kotarba, L. Holmlid, Emission of Excited Potassium Species from an Industrial Iron Catalyst from Ammonia Synthesis, Catalysis Letters, 26, 1994, 101.
• J. Makowski and R. Dziembaj, Fast and Slow Reaction Pathways of CO₂ Methanation on Reduced Iron Oxide Catalysts, Mol. Catal. 91, 1994, 353.
• R. Dziembaj and Z. Piwowarska, X-ray Photoelectron Spectroscopy (XPS) as a Useful Tool to Characterize Polyaniline Doped by 12-tungsto-silicic or -phosphoric and 12-molybdo-phosphoric acids, Synth. Metals, 63, 1994, 225.

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