Die Arbeitsgruppe „Innovative Katalytische Systeme“ untersucht innovative Lösungsansätze für Herausforderungen in aktuellen Feldern der heterogenen Katalyse, wie zum Beispiel harsche Prozessbedingungen, Energieeffizienz, Stabilität, Stofftransporteffizienz, Bifunktionalität oder Recycling.

Schemata verschiedener Katalysatordesigns.
Katalysatorschemata, Foto: Universität Leipzig, Institut für Technische Chemie

Potential and limitations of immobilized enzymes on different silicate supports are considered with the aim of a modular design platform. In particular, multifunctional redox-active enzyme conjugates are the focus of activities. In addition, transition metal-containing metal-organic framework compounds for the selective oxidation of hydrocarbons in continuous operation are investigated. By means of kinetic analysis, reaction schemes and meachnisms are elucidated. Enhancement of catalytic activity in mass transfer limited reactions on porous catalysts is another core topic of this group. Two classes of reactions serve as examples: Aromatics alkylation on mesoporous zeolite/silicate composites and SCR-DeNOx on mixed oxides with hierarchically structured pore systems. In addition, systematic studies on the influence of mass transfer in platinum-containing monolithic porous glasses (controlled pore glasses, CPGs) with different pore widths and geometries are carried out using liquid-phase hydrogenation of alkyl aromatics. The generation of synthesis gas by steam or dry reforming of methane is investigated on innovative supported metal catalysts at high temperatures up to 1173 K. The aim here is to increase the efficiency of the hydrogenation process. Here, the goal is to increase catalyst stability by avoiding sintering of the metal component and suppressing coke formation. Bifunctional metal-containing zeolites are being investigated as catalysts for the selective hydroconversion of long-chain alkanes at elevated pressures in continuous operation. In addition, the recovery of metals from used supported catalysts is an important aspect of sustainable innovation in the field of heterogeneous catalysis. This is achieved by oxidative extraction of metals into supercritical fluids (Supercritical Fluid Oxidative Extraction, SFOE) by selective variation of fluid pressure and temperature, complexing agents, oxidants for different multimetallic supported catalysts.

Ausgewählte Publikationen

S. Weber, K.L. Abel, R.T. Zimmermann, X. Huang, J. Bremer, L.K. Rihko-Struckmann, D. Batey, S. Cipiccia, J. Titus, D. Poppitz, C. Kübel, K. Sundmacher, R. Gläser, T.L. Sheppard
Porosity and Structure of Hierarchically Porous Ni/Al2O3 Catalysts for CO2 Methanation
Catalysts 10 (2020) 1471
DOI: 10.3390/catal10121471

 Markus Gebauer

Markus Gebauer

Wiss. Mitarbeiter

Heterogene Katalyse
Technikum Analytikum
Linnéstraße 3, Raum 520
04103 Leipzig

Telefon: +49 341 97-36314

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