Visokotlačne tehnologije IV (Slovene)

Code

J2-7638 (C) - included in ARIS records

Head

PhD Željko Knez

Period

1/1/1996 - 6/30/2001

Science

Natural sciences and mathematics (2)
Engineering sciences and technologies (8)
Other (1)

Reseacher status

Researcher (10)
Junior expert or technical associate (1)

Education

Doctor's degree (9)
Master's degree (1)
Other (1)

Sex

Woman (6)
Man (5)

Status

Active (9)
Retired (2)

No. of publications

1–9 (1)
10–99 (2)
100–999 (7)
1,000–9,999 (1)

Projects / Programmes source: ARIS

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

Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases

source: WoS

source: Scopus

source: COBISS

Researchers (11)

no.	Code	Name and surname	Research area	Role	Period	No. of publicationsNo. of publications
1.	00215	PhD Danilo Dobčnik	Natural sciences and mathematics	Researcher	2000 - 2001	291
2.	00869	PhD Valter Doleček	Natural sciences and mathematics	Researcher	2000 - 2001	381
3.	17030	PhD Klementina Fukne-Kokot	Engineering sciences and technologies	Researcher	1996 - 2001	25
4.	17868	PhD Majda Hadolin Kolar	Engineering sciences and technologies	Researcher	1998 - 2001	108
5.	02619	PhD Željko Knez	Engineering sciences and technologies	Head	1998 - 2001	1,999
6.	18235	Igor Krmelj		Researcher	1998 - 2001	7
7.	17866	MSc Vlasta Krmelj	Engineering sciences and technologies	Researcher	1998 - 2001	101
8.	00534	PhD Maja Leitgeb	Engineering sciences and technologies	Researcher	1998 - 2001	801
9.	13568	PhD Zoran Novak	Engineering sciences and technologies	Researcher	2000 - 2001	236
10.	15241	PhD Andreja Rižner Hraš	Engineering sciences and technologies	Researcher	1996 - 2001	58
11.	11865	PhD Mojca Škerget	Engineering sciences and technologies	Researcher	1998 - 2001	744

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	12,498

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.