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Projects / Programmes source: ARIS

Visokotlačne tehnologije IV (Slovene)

Research activity

Code Science Field Subfield
2.02.00  Engineering sciences and technologies  Chemical engineering   

Code Science Field
T350  Technological sciences  Chemical technology and engineering 
Keywords
high pressure technologies, extraction, biochemical reactions, micronization, aerogels, phase equilibria, mass-transfer
Evaluation (rules)
source: COBISS
Researchers (11)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  00215  PhD Danilo Dobčnik  Chemistry  Researcher  2000 - 2001  291 
2.  00869  PhD Valter Doleček  Chemistry  Researcher  2000 - 2001  382 
3.  17030  PhD Klementina Fukne-Kokot  Chemical engineering  Researcher  1996 - 2001  25 
4.  17868  PhD Majda Hadolin Kolar  Chemical engineering  Researcher  1998 - 2001  108 
5.  02619  PhD Željko Knez  Chemical engineering  Head  1998 - 2001  2,033 
6.  18235  Igor Krmelj    Researcher  1998 - 2001 
7.  17866  MSc Vlasta Krmelj  Chemical engineering  Researcher  1998 - 2001  105 
8.  00534  PhD Maja Leitgeb  Chemical engineering  Researcher  1998 - 2001  825 
9.  13568  PhD Zoran Novak  Chemical engineering  Researcher  2000 - 2001  249 
10.  15241  PhD Andreja Rižner Hraš  Chemical engineering  Researcher  1996 - 2001  58 
11.  11865  PhD Mojca Škerget  Chemical engineering  Researcher  1998 - 2001  772 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0794  University of Maribor, Faculty of Chemistry and Chemical Engineering  Maribor  5089638012  13,183 
Abstract
The research work in the field of high pressure technologies is dealing with: - the use of supercritical fluids (SCF) such as CO2, propane, butane, dimethylether, etc., as solvents in extraction processes for the isolation of active components from natural materials. For the design of the SCF extraction process the equilibrium data are needed, therefore an intesive research work in the field of phase equilibria (solubility measurements, phase transitions and modeling) is carried out. - the use of SCF as a medium for biochemical reactions, where the aim of our research work is to develop a synthesis procedure for fatty acid ester production where the synthesis and the separation of products and unreacted reactants would be integrated. A batch stirred tank reactor and a continuously operated packed-bed reactor were investigated. Syntheses were performed at atmospheric pressure in a solvent-free system and at high pressure where supercritical carbon dioxide, n-butane and n-propane were used as reaction media. - the production of Particles from gas saturated solutions (PGSS). The process was patented in 1997 (EP Nr. 0744992). In our new developed process the compressible medium is dissolved in the melted substance and the so-called gas saturated solution is formed. By the expansion of such a solution through an expansion unit (e.g. nozzle) the compressed medium is evaporated and the solution is cooled. Due to this effect high supersaturation occurs and therefore fine particles are formed. - Aerogels, where the preparation and the characterization of various aerogels of metal oxides (silica, titania, aluminia,…) and their mixed oxides is carried out. The potential use of these aerogels as catalyst supports is also investigated.
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