TY - JOUR A1 - Falling, Luisa A1 - Kaluza, Stefan A1 - Strucks, Peter T1 - A Short Review on Ni-Catalyzed Methanation of CO²: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation JF - Chemie Ingenieur Technik N2 - Today, the use of renewable energies and recycling of climate-changing gases are increasingly important. In this context,coupling of methanation with small, decentralized CO2sources such as biogas plants provides one possibility. However,fluctuating availability of renewables for hydrogen production in combination with small storage volumes result in anenhanced demand for dynamic process operation. This leads to new research challenges with respect to the required cata-lysts and the overall process design. To draw reliable conclusions about the catalytic performance under dynamic processoperation, the mechanism of the methanation reaction as well as typical deactivation procedures of the catalyst appliedunder steady-state conditions have to be reviewed thoroughly. KW - Power-to-gas KW - Ni catalysts KW - Dynamic operation KW - Deactivation KW - CO2Methanation Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-32134 SN - 1522-2640 VL - 93 SP - 1526 EP - 1536 PB - Wiley ER - TY - JOUR A1 - Strucks, Peter A1 - Watermann, Clara A1 - Weber, Konradin A1 - Kaluza, Stefan T1 - Systematic Investigations of Vibrational and Fluid‐Mechanical Stability of Coated Monolithic Catalysts JF - Chemie Ingenieur Technik N2 - Heterogeneous catalysts usually consist of porous, inorganic materials. Especially in the mobile application, e.g., in exhaust gas catalysis as a part of the gas line of an engine, there are loads due to vibrations and high gas velocities. It can be assumed that physical stress will lead to a loss of the catalytically active coating. The present contribution describes experimental setups and methods for a systematic and reproducible investigation of the main influences to the mass loss due to vibrational and fluid‐mechanical stress caused by particle‐free gas flows. KW - Design of experiments KW - Extruded catalysts KW - Mechanical stability Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-28930 SN - 1522-2640 VL - 93 IS - 5 SP - 1 EP - 6 PB - Wiley ER - TY - JOUR A1 - Failing, Luisa A1 - Kaluza, Stefan A1 - Strucks, Peter T1 - Catalytic CO2 methanation: Providing optimal test conditions for kinetic investigations JF - Chemie Ingenieur Technik N2 - In the context of using renewable energies and recycling climate-changing gases, methanation of CO2 provides one possibility. However, volatile availability of renewable energies for hydrogen production and fluctuating CO2streams from different sources lead to enhanced demand in investigating the influence of dynamic process operation on the catalyst performance, including detailed kinetic characterization. Reliable kinetic measurements require isothermal temperature control and absence of macrokinetic diffusion limitations. Both were investigated in this work while the determination of steady-state kinetic parameters is part of ongoing studies. Furthermore, a detailed analysis with respect to the long-term-stability of the nickel-based catalyst was performed KW - CO2 methanation KW - Kinetics KW - Long-term stability KW - Ni catalyst KW - Power-to-Gas Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-40026 SN - 1522-2640 VL - 95 IS - 5 SP - 749 EP - 753 PB - Wiley ER -