Search Results - "Jens Bremer"

Novel Multiplicity and Stability Criteria for Non-Isothermal Fixed-Bed Reactors by Bremer, Jens, Sundmacher, Kai

“…With the increasing need to utilize carbon dioxide, fixed-bed reactors for catalytic hydrogenation will become a decisive element for modern chemicals and…”
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Porosity and Structure of Hierarchically Porous Ni/Al2O3 Catalysts for CO2 Methanation by Sebastian Weber, Ken L. Abel, Ronny T. Zimmermann, Xiaohui Huang, Jens Bremer, Liisa K. Rihko-Struckmann, Darren Batey, Silvia Cipiccia, Juliane Titus, David Poppitz, Christian Kübel, Kai Sundmacher, Roger Gläser, Thomas L. Sheppard

“…CO2 methanation is often performed on Ni/Al2O3 catalysts, which can suffer from mass transport limitations and, therefore, decreased efficiency. Here we show…”
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Optimal catalyst particle design for flexible fixed-bed CO2 methanation reactors by Zimmermann, Ronny Tobias, Bremer, Jens, Sundmacher, Kai

“…[Display omitted] •Optimization of catalyst particles in a fixed-bed methanation reactor.•Optimal particle design: active particle core encapsulated by inert…”
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From Bodenstein to Péclet – Dimensionless Numbers for Axial Dispersion in Chemical Reactors by Bremer, Jens, Turek, Thomas

“…In the present contribution, the historical development of dimensionless numbers describing axial mixing effects in chemical reactors is analyzed. While the…”
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Load-flexible fixed-bed reactors by multi-period design optimization by Zimmermann, Ronny Tobias, Bremer, Jens, Sundmacher, Kai

“…Many research activities focus on load-flexible fixed-bed reactors in the context of Power-to-X concepts. One of the main issues is the occurrence of hazardous…”
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Multi-period optimization for the design and operation of a flexible power-to-methanol process by Maggi, Andrea, Bremer, Jens, Sundmacher, Kai

“…The increasing share of renewable resources in the context of energy transition scenarios requires new methodologies for the design and operation of chemical…”
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Challenges in data-based reactor modeling: A critical analysis of purely data-driven and hybrid models for a CSTR case study by Peterson, Luisa, Bremer, Jens, Sundmacher, Kai

“…In this study, we critically examine the performance of hybrid and purely data-driven models in reactor systems using catalytic CO2 methanation in a…”
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Core‐Shell Catalyst Pellets for CO2 Methanation in a Pilot‐Scale Fixed‐Bed Reactor by Geschke, Alexander, Zimmermann, Ronny Tobias, Bremer, Jens, Sundmacher, Kai

“…Power‐to‐methane (PtM) offers an efficient opportunity for surplus renewable energy storage, but heat management is a major challenge for conducting the highly…”
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Core‐Shell Catalyst Pellets for CO 2 Methanation in a Pilot‐Scale Fixed‐Bed Reactor by Geschke, Alexander, Zimmermann, Ronny Tobias, Bremer, Jens, Sundmacher, Kai

“…Power‐to‐methane (PtM) offers an efficient opportunity for surplus renewable energy storage, but heat management is a major challenge for conducting the highly…”
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POD-DEIM for efficient reduction of a dynamic 2D catalytic reactor model by Bremer, Jens, Goyal, Pawan, Feng, Lihong, Benner, Peter, Sundmacher, Kai

“…•Detailed, dynamic, two-dimensional reactor model for catalytic carbon dioxide methanation, with close connection to real world application.•POD-DEIM applied…”
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Direct coronary stenting versus predilatation followed by stent placement by Brueck, Martin, Scheinert, Dierk, Wortmann, Alois, Bremer, Jens, von Korn, Hubertus, Klinghammer, Lutz, Kramer, Wilfried, Flachskampf, Frank A, Daniel, Werner G, Ludwig, Josef

“…Direct stenting without antecedent dilatation may reduce procedural time, costs, and radiation exposure, and may result in less vessel injury. The purpose of…”
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CO2 methanation: Optimal start‐up control of a fixed‐bed reactor for power‐to‐gas applications by Bremer, Jens, Rätze, Karsten H. G., Sundmacher, Kai

“…Utilizing volatile renewable energy sources (e.g., solar, wind) for chemical production systems requires a deeper understanding of their dynamic operation…”
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Core–shell catalyst pellets for effective reaction heat management by Zimmermann, Ronny Tobias, Weber, Sebastian, Bremer, Jens, Idakiev, Vesselin, Pashminehazar, Reihaneh, Sheppard, Thomas Lennon, Mörl, Lothar, Sundmacher, Kai

“…[Display omitted] •Provide an opportunity for effective reactor heat management.•Were prepared by fluidized-bed coating.•Were analysed via X-Ray Computed…”
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CO sub(2) methanation: Optimal start-up control of a fixed-bed reactor for power-to-gas applications by Bremer, Jens, Raetze, Karsten HG, Sundmacher, Kai

“…Utilizing volatile renewable energy sources (e.g., solar, wind) for chemical production systems requires a deeper understanding of their dynamic operation…”
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CO 2 methanation: Optimal start‐up control of a fixed‐bed reactor for power‐to‐gas applications by Bremer, Jens, Rätze, Karsten H. G., Sundmacher, Kai

“…Utilizing volatile renewable energy sources (e.g., solar, wind) for chemical production systems requires a deeper understanding of their dynamic operation…”
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Hybrid modeling of the catalytic CO2 methanation using process data and process knowledge by Peterson, Luisa, Bremer, Jens, Sundmacher, Kai

“…Heterogeneously catalyzed CO2 methanation is an essential process in the power-to-methane concept. To overcome the limitations of both mechanistic and…”
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Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al2O3 Reference Catalyst for CO2 Methanation by Weber, Sebastian, Zimmermann, Ronny T., Bremer, Jens, Abel, Ken L., Poppitz, David, Prinz, Nils, Ilsemann, Jan, Wendholt, Sven, Yang, Qingxin, Pashminehazar, Reihaneh, Monaco, Federico, Cloetens, Peter, Huang, Xiaohui, Kübel, Christian, Kondratenko, Evgenii, Bauer, Matthias, Bäumer, Marcus, Zobel, Mirijam, Gläser, Roger, Sundmacher, Kai, Sheppard, Thomas L.

“…There is considerable motivation in the catalysis community and chemical industry to envision a future where rational catalyst design and targeted chemical…”
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Optimal Catalyst-Reactor Design for Load-Flexible CO2 Methanation by Multi-Period Design Optimization by Zimmermann, Ronny T., Bremer, Jens, Sundmacher, Kai

“…Fixed-bed reactors employed within Power-to-X technologies are expected to be subject to volatile process feeds, in order to minimize intermediate buffer or…”
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Multi-Period Design Optimization of Flexible Fixed-Bed Reactors by Stoichiometry-Based Model Reduction by Zimmermann, Ronny T., Bremer, Jens, Sundmacher, Kai

“…The design of fixed-bed reactors has gained interest in the light of load-flexible operation. This is due to the expectation that some process feeds will be…”
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Digitization in Catalysis Research: Towards a Holistic Description of a Ni/Al 2 O 3 Reference Catalyst for CO 2 Methanation by Weber, Sebastian, Zimmermann, Ronny T., Bremer, Jens, Abel, Ken L., Poppitz, David, Prinz, Nils, Ilsemann, Jan, Wendholt, Sven, Yang, Qingxin, Pashminehazar, Reihaneh, Monaco, Federico, Cloetens, Peter, Huang, Xiaohui, Kübel, Christian, Kondratenko, Evgenii, Bauer, Matthias, Bäumer, Marcus, Zobel, Mirijam, Gläser, Roger, Sundmacher, Kai, Sheppard, Thomas L.

“…There is considerable motivation in the catalysis community and chemical industry to envision a future where rational catalyst design and targeted chemical…”
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