Department of Physical Chemistry

Institute of Chemistry, Faculty of Sci. & Techn., University of Debrecen


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Research

On 1th of September, 2016 a new Department of Physical Chemistry was formed from the former one and the former Department of Colloid and Environmental Chemistry. The head of the new Department of Physical Chemistry is Prof. Dr. István Fábián. Until the start of the new homepage please click on the links in the previous sentences for additional information.

Our research activity is in the state of continuous change. We take part in many occasional and longer - internal and external - cooperations. Here we try to summarize our main research topics.

Some of these research topics were initiated and studied by Professor Emeritus Dr. Mihály T. Beck when he was the Head of the Department.

In order to view the publicational activity of the members of the Department please access the page People.


MTA-DE Research Group of Homogeneous Catalysis and Reaction Mechanisms

The Research Group is headed by Professor Dr. Ferenc Joó. The website of the unit lists the following research topics (including those investigated by Dr. Ágnes Kathó's group):

  • development and characterisation of new catalytic water soluble transition metal (Rh, Ru and Ir) complexes;
  • investigation of catalytic hydrogenation:
    • catalytic carbon-dioxide hydrogenation under mild conditions in aqueous solution;
    • study of the mechanisms of the catalytic reactions;
    • role of the water molecule:
      • dissolution of metal complexes - hydrolysis to hydroxo metal complexes;
      • heterolytic hydrogen split - formation of hydrido metal complexes;
      • pH dependence of selectivity of reactions;
      • control of the path of selective reactions by changing the pH;
    • research of the catalytically active species (hydrido metal complexes);
  • two phase (aqueous-organic) catalytic reactions for the hydrogenation of organo-soluble subtrates;
  • modification of biomembranes by homogeneous and heterogeneous catalytic hydrogenation;
  • investigation of the catalytic reactions in ionic liquids - comparison to analogous reactions in organic and aqueous solution.


Exotic kinetic phenomena and non-linear dynamics

In the last three decades this topic was primarily determined by Professors Dr. Vilmos Gáspár and Dr. Gyula Rábai. The main research directions were as follows:

  • design and investigation of homogeneous pH-regulated and other oscillatory reactions and elucidation of the underlying mechanisms;
  • regulation of chaos in chemical and electrochemical systems;
  • design and investigation of electrochemical oscillators;
  • study of chemical waves and other inhomogeneous, spatially distributed kinetic phenomena;
  • non-linear dynamics in biological phenomena and therapeutic processes.

Presently the theoretical aspects of some of the previous topics are studied by Dr. György Póta.


Autocatalytic and polymerization reactions, front reactions

The investigations by Professor Dr. György Bazsa and his co-workers (especially Dr. István Lengyel, Dr. István Nagy and, from the present departmental staff, Dr. György Póta) give insight into the following problems:

  • mechanisms of the homogeneous autocatalytic reactions, especially the oxidations by nitric acid;
  • the velocity and spatial concentration profile of the diffusionally propagating autocatalytic reaction fronts;
  • propagating autocatalytic reaction fronts in the presence of macroscopic flow of the medium i. e. convection;
  • propagating polymerization fronts;
  • production and characterization of composite materials.


Bio-coordination chemistry and kinetics of photochemical reactions

The research program of Dr. Katalin Ősz and her group includes the following main topics:

  • coordination chemistry of amino acids and peptides;
  • modeling of active centers of enzyme molecules;
  • the role of transition metal complexes in the occurrence of neuro-degenerative diseases;
  • kinetics of photochemical reactions.


X-ray Diffraction Laboratory

Dr. Attila Bényei, the leader of the X-ray Diffraction Laboratory, investigates the following research topics:

  • single crystal X-ray structure determinations;
  • structure of metal complexes, organic molecules and H-bonded systems.

His scientific profile also contains the investigation of homogeneous catalytic reactions, the working mechanism and structure of the water-soluble platinum group metal complexes applied as catalysts.