@article{WiesmannHamelKaluza2018, author = {Wiesmann, Thomas and Hamel, Christian and Kaluza, Stefan}, title = {Techniques to Remove Traces of Oxygen by Catalytic Conversion from Gas Mixtures}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800022}, pages = {1446 -- 1452}, year = {2018}, language = {en} } @article{WeideSchulzKaluzaetal.2016, author = {Weide, Philipp and Schulz, Katharina and Kaluza, Stefan and Rohe, Markus and Beranek, Radim and Muhler, Martin}, title = {Controlling the Photocorrosion of Zinc Sulfide Nanoparticles in Water by Doping with Chloride and Cobalt Ions}, series = {Langmuir}, volume = {32}, journal = {Langmuir}, number = {48}, publisher = {ACS Publ.}, issn = {1520-5827}, doi = {10.1021/acs.langmuir.6b03385}, pages = {12641 -- 12649}, year = {2016}, language = {en} } @article{TitusKaluzaMarschall2014, author = {Titus, Juliane and Kaluza, Stefan and Marschall, Roland}, title = {German Catalysis on an International Scale in Weimar}, series = {ChemCatChem}, volume = {6}, journal = {ChemCatChem}, number = {6}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201402266}, pages = {1523 -- 1525}, year = {2014}, language = {en} } @article{SchulzkeConradKaluzaetal.2017, author = {Schulzke, Tim and Conrad, Stefan and Kaluza, Stefan and van Loo, Tom}, title = {Upgrading of fast pyrolysis condensates via esterification with higher alcohols}, series = {Biomass and Bioenergy}, volume = {103}, journal = {Biomass and Bioenergy}, publisher = {Elsevier}, issn = {0961-9534}, doi = {10.1016/j.biombioe.2017.05.010}, pages = {11 -- 20}, year = {2017}, language = {en} } @article{SchmidtGoebelNebeletal.2018, author = {Schmidt, Stefan and G{\"o}bel, Christoph and Nebel, Janine and Wiesmann, Thomas and Hamel, Christian and Reinsdorf, Arne and Wolf, Dorit and Gehrmann, Stefan and Tenhumberg, Nils and Muhler, Martin and Kaluza, Stefan}, title = {Recent Developments in the Conversion of Synthesis Gas to Short-Chain Alcohols over Cu-Co-Based Catalysts}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800023}, pages = {1465 -- 1475}, year = {2018}, language = {en} } @article{SchittkowskiRulandLaudenschlegeretal.2018, author = {Schittkowski, Julian and Ruland, Holger and Laudenschleger, Daniel and Girod, Kai and K{\"a}hler, Kevin and Kaluza, Stefan and Muhler, Martin and Schl{\"o}gl, Robert}, title = {Methanol Synthesis from Steel Mill Exhaust Gases: Challenges for the Industrial Cu/ZnO/Al 2 O 3 Catalyst}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {10}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201800017}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34526}, pages = {1419 -- 1429}, year = {2018}, language = {en} } @article{PeterFichtlRulandetal.2012, author = {Peter, Maximilian and Fichtl, Matthias B. and Ruland, Holger and Kaluza, Stefan and Muhler, Martin and Hinrichsen, Olaf}, title = {Detailed kinetic modeling of methanol synthesis over a ternary copper catalyst}, series = {Chemical Engineering Journal}, volume = {203}, journal = {Chemical Engineering Journal}, publisher = {Elsevier}, issn = {0009-2509}, doi = {10.1016/j.cej.2012.06.066}, pages = {480 -- 491}, year = {2012}, language = {en} } @article{NebelSchmidtPanetal.2019, author = {Nebel, Janine and Schmidt, Stefan and Pan, Qiushi and Lotz, Katrin and Kaluza, Stefan and Muhler, Martin}, title = {On the role of cobalt carbidization in higher alcohol synthesis over hydrotalcite-based Co-Cu catalysts}, series = {Chinese Journal of Catalysis}, volume = {40}, journal = {Chinese Journal of Catalysis}, number = {11}, publisher = {Elsevier}, issn = {1872-2067}, doi = {10.1016/S1872-2067(19)63344-9}, pages = {1731 -- 1740}, year = {2019}, language = {en} } @article{MeiSanchezReineckeetal.2011, author = {Mei, Bastian and S{\´a}nchez, Miguel D. and Reinecke, Thomas and Kaluza, Stefan and Xia, Wei and Muhler, Martin}, title = {The synthesis of Nb-doped TiO2 nanoparticles by spray drying: an efficient and scalable method}, series = {Journal of Materials Chemistry}, volume = {21}, journal = {Journal of Materials Chemistry}, number = {32}, publisher = {Royal Society of Chemistry (RSC)}, issn = {1364-5501}, doi = {10.1039/c1jm11431j}, pages = {11781 -- 11790}, year = {2011}, language = {en} } @incollection{KaluzaMuhler2010, author = {Kaluza, Stefan and Muhler, Martin}, title = {A novel continuous approach for the synthesis and characterization of pure and mixed metal oxide systems applied in heterogeneous catalysis}, series = {Scientific Bases for the Preparation of Heterogeneous Catalysts}, volume = {Studies in Surface Science and Catalysis, 175}, booktitle = {Scientific Bases for the Preparation of Heterogeneous Catalysts}, editor = {Gaigneaux, E. M. and Devillers, M. and Hermans, S. and Jacobs, P. A. and Martens, J. A. and Ruiz, P.}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-0-444-53601-3}, doi = {10.1016/S0167-2991(10)75027-8}, pages = {217 -- 220}, year = {2010}, language = {en} } @article{KaluzaSchroeterNaumannd'Alnoncourtetal.2008, author = {Kaluza, Stefan and Schr{\"o}ter, Marie Katrin and Naumann d'Alnoncourt, Raoul and Reinecke, Thomas and Muhler, Martin}, title = {High Surface Area ZnO Nanoparticles via a Novel Continuous Precipitation Route}, series = {Advanced Functional Materials}, volume = {18}, journal = {Advanced Functional Materials}, number = {22}, issn = {1616-3028}, doi = {10.1002/adfm.200800457}, pages = {3670 -- 3677}, year = {2008}, language = {en} } @article{KaluzaMuhler2009, author = {Kaluza, Stefan and Muhler, Martin}, title = {On the Role of Aging, Washing, and Drying in the Synthesis of Polycrystalline Zinc Oxide by Precipitation: Combining Fast Continuous Mixing, Spray Drying and Freeze Drying to Unravel the Solid-State Transformations of the Precipitate}, series = {Catalysis Letters}, volume = {129}, journal = {Catalysis Letters}, number = {3-4}, publisher = {Springer}, doi = {10.1007/s10562-008-9818-5}, pages = {287 -- 292}, year = {2009}, language = {en} } @article{KaluzaMuhler2009, author = {Kaluza, Stefan and Muhler, Martin}, title = {On the precipitation mechanism and the role of the post-precipitation steps during the synthesis of binary ZnO-Al2O3 composites with high specific surface area}, series = {Journal of Materials Chemistry}, volume = {19}, journal = {Journal of Materials Chemistry}, number = {23}, publisher = {Royal Society of Chemistry (RSC)}, issn = {1364-5501}, doi = {10.1039/b902004g}, pages = {3914 -- 3922}, year = {2009}, language = {en} } @article{KaluzaBehrensSchiefenhoeveletal.2011, author = {Kaluza, Stefan and Behrens, Malte and Schiefenh{\"o}vel, Nora and Kniep, Benjamin and Fischer, Richard and Schl{\"o}gl, Robert and Muhler, Martin}, title = {A Novel Synthesis Route for Cu/ZnO/Al2O3 Catalysts used in Methanol Synthesis: Combining Continuous Consecutive Precipitation with Continuous Aging of the Precipitate}, series = {ChemCatChem}, volume = {3}, journal = {ChemCatChem}, number = {1}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201000329}, pages = {189 -- 199}, year = {2011}, language = {en} } @article{JungePuringPiontekSmialkowskietal.2017, author = {Junge Puring, Kai and Piontek, Stefan and Smialkowski, Mathias and Burfeind, Jens and Kaluza, Stefan and Doetsch, Christian and Apfel, Ulf-Peter}, title = {Simple Methods for the Preparation of Non-noble Metal Bulk-electrodes for Electrocatalytic Applications}, series = {Journal of visualized experiments : JoVE}, journal = {Journal of visualized experiments : JoVE}, number = {124}, publisher = {JoVE}, issn = {1940-087X}, doi = {10.3791/56087}, year = {2017}, abstract = {The rock material pentlandite with the composition Fe4.5Ni4.5S8 was synthesized via high temperature synthesis from the elements. The structure and composition of the material was characterized via powder X-ray diffraction (PXRD), M{\"o}ssbauer spectroscopy (MB), scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and energy dispersive X-ray spectroscopy (EDX). Two preparation methods of pentlandite bulk electrodes are presented. In the first approach a piece of synthetic pentlandite rock is directly contacted via a wire ferrule. The second approach utilizes pentlandite pellets, pressed from finely ground powder, which is immobilized in a Teflon casing. Both electrodes, whilst being prepared by an additive-free method, reveal high durability during electrocatalytic conversions in comparison to common drop-coating methods. We herein showcase the striking performance of such electrodes to accomplish the hydrogen evolution reaction (HER) and present a standardized method to evaluate the electrocatalytic performance by electrochemical and gas chromatographic methods. Furthermore, we report stability tests via potentiostatic methods at an overpotential of 0.6 V to explore the material limitations of the electrodes during electrolysis under industrial relevant conditions.}, language = {en} } @article{HeeskensAghaeiKaluzaetal.2013, author = {Heeskens, Denise and Aghaei, Pedram and Kaluza, Stefan and Strunk, Jennifer and Muhler, Martin}, title = {Selective oxidation of ethanol in the liquid phase over Au/TiO 2}, series = {physica status solidi (b)}, volume = {250}, journal = {physica status solidi (b)}, number = {6}, publisher = {Wiley}, issn = {1521-3951}, doi = {10.1002/pssb.201248440}, pages = {1107 -- 1118}, year = {2013}, language = {en} } @incollection{HamelKaluzaUnger2015, author = {Hamel, Christian and Kaluza, Stefan and Unger, Christoph}, title = {Catalytic tar reforming of biomass-derived synthesis gas: Influence of the catalyst, gas composition and sulfur poisoning}, series = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry",October 7 - 9, 2015, Dresden}, volume = {DGMK Tagungsbericht, 2015,2}, booktitle = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry",October 7 - 9, 2015, Dresden}, editor = {Ernst, Stefan}, publisher = {DGMK}, address = {Hamburg}, organization = {DGMK}, isbn = {978-3-941721-56-2}, pages = {139 -- 146}, year = {2015}, language = {en} } @article{GirodBreitkreuzGerstneretal.2018, author = {Girod, Kai and Breitkreuz, Klaas and Gerstner, Andrea and Marzi, Thomas and Schulzke, Tim and Kaluza, Stefan}, title = {Close-to-Practice Investigations of Heterogeneously Catalyzed Syngas Conversions in Slurry and Fixed-Bed Reactor Systems}, series = {Chemie Ingenieur Technik}, volume = {90}, journal = {Chemie Ingenieur Technik}, number = {5}, publisher = {Wiley}, issn = {1522-2640}, doi = {10.1002/cite.201700143}, pages = {690 -- 695}, year = {2018}, language = {en} } @article{EngeldahlOezaslanMarschalletal.2015, author = {Engeldahl, Barthel and {\"O}zaslan, Mehtap and Marschall, Roland and Rose, Marcus and Kaluza, Stefan and Titus, Juliane and Sprung, Christoph}, title = {Weimar 2015: Catalysing Tomorrow's Solutions}, series = {ChemCatChem}, volume = {7}, journal = {ChemCatChem}, number = {12}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201500435}, pages = {1794 -- 1796}, year = {2015}, language = {en} } @article{EngelKaluzaOezaslanetal.2017, author = {Engel, Rebecca V. and Kaluza, Stefan and Oezaslan, Mehtap and Peitz, Stephan}, title = {German Catalysis Meeting - 50 Years and as Young as Ever}, series = {ChemCatChem}, volume = {9}, journal = {ChemCatChem}, number = {11}, publisher = {Wiley}, issn = {1867-3899}, doi = {10.1002/cctc.201700683}, pages = {2018 -- 2020}, year = {2017}, language = {en} } @article{BozKaluzaBoroğluetal.2012, author = {Boz, İsmail and Kaluza, Stefan and Boroğlu, Mehtap Şafak and Muhler, Martin}, title = {Synthesis of high surface area ZnO powder by continuous precipitation}, series = {Materials Research Bulletin}, volume = {47}, journal = {Materials Research Bulletin}, number = {5}, publisher = {Elsevier}, issn = {1873-4227}, doi = {10.1016/j.materresbull.2012.02.005}, pages = {1185 -- 1190}, year = {2012}, language = {en} } @article{BordoloiSanchezNoeietal.2014, author = {Bordoloi, Ankur and Sanchez, Miguel and Noei, Heshmat and Kaluza, Stefan and Großmann, Dennis and Wang, Yuemin and Gr{\"u}nert, Wolfgang and Muhler, Martin}, title = {Catalytic Behaviour of Mesoporous Cobalt-Aluminum Oxides for CO Oxidation}, series = {Journal of Catalysts}, journal = {Journal of Catalysts}, publisher = {Hindawi}, issn = {2314-5110}, doi = {10.1155/2014/807545}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-34344}, pages = {1 -- 9}, year = {2014}, language = {en} } @article{AntonRulandKaluzaetal.2015, author = {Anton, Johan and Ruland, Holger and Kaluza, Stefan and Muhler, Martin}, title = {Fast and Reproducible Testing of Cu-Co-Based Catalysts Applied in the Conversion of Synthesis Gas to Ethanol and Higher Alcohols}, series = {Catalysis Letters}, volume = {145}, journal = {Catalysis Letters}, number = {7}, publisher = {Springer}, doi = {10.1007/s10562-015-1543-2}, pages = {1374 -- 1381}, year = {2015}, language = {en} } @article{AntonNebelSongetal.2016, author = {Anton, Johan and Nebel, Janine and Song, Huiqing and Froese, Christian and Weide, Philipp and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {The effect of sodium on the structure-activity relationships of cobalt-modified Cu/ZnO/Al2O3 catalysts applied in the hydrogenation of carbon monoxide to higher alcohols}, series = {Journal of Catalysis}, volume = {335}, journal = {Journal of Catalysis}, publisher = {Elsevier}, issn = {0021-9517}, doi = {10.1016/j.jcat.2015.12.016}, pages = {175 -- 186}, year = {2016}, language = {en} } @article{AntonNebelGoebeletal.2016, author = {Anton, Johan and Nebel, Janine and G{\"o}bel, Christoph and Gabrysch, Thomas and Song, Huiqing and Froese, Christian and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {CO Hydrogenation to Higher Alcohols over Cu-Co-Based Catalysts Derived from Hydrotalcite-Type Precursors}, series = {Topics in Catalysis}, volume = {59}, journal = {Topics in Catalysis}, number = {15-16}, publisher = {Springer Nature}, doi = {10.1007/s11244-016-0663-2}, pages = {1361 -- 1370}, year = {2016}, language = {en} } @article{AntonNebelSongetal.2015, author = {Anton, Johan and Nebel, Janine and Song, Huiqing and Froese, Christian and Weide, Philipp and Ruland, Holger and Muhler, Martin and Kaluza, Stefan}, title = {Structure-activity relationships of Co-modified Cu/ZnO/Al2O3 catalysts applied in the synthesis of higher alcohols from synthesis gas}, series = {Applied Catalysis A: General}, volume = {505}, journal = {Applied Catalysis A: General}, publisher = {Elsevier}, issn = {0926-860X}, doi = {10.1016/j.apcata.2015.07.002}, pages = {326 -- 333}, year = {2015}, language = {en} } @incollection{AntonNebelFroeseetal.2015, author = {Anton, Johan and Nebel, Janine and Froese, Christian and Kleinschmidt, Ralph and Quandt, Thomas and Ruland, Holger and Kaluza, Stefan and Muhler, Martin}, title = {Higher alcohol synthesis over Na-modified Co-Cu catalysts: Co2C formation and effect of surface composition}, series = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry", October 7 - 9, 2015, Dresden}, volume = {DGMK Tagungsbericht, 2015,2}, booktitle = {Preprints of the DGMK-Conference "Synthesis Gas Chemistry", October 7 - 9, 2015, Dresden}, editor = {Ernst, Stefan}, publisher = {DGMK}, address = {Hamburg}, organization = {DGMK}, isbn = {978-3-941721-56-2}, pages = {137}, year = {2015}, abstract = {Cu-Co-based model catalysts were prepared by a sophisticated alkali-free synthesis method and tested in the conversion of synthesis gas to higher alcohols. MoO3-coated alumina was used as the support, providing both high specific surface area and strongly interacting sites for the deposition of the active metals. A bulk Cu/Co ratio of ~2 was found to be most suitable in terms of activity and product distribution. Surface enrichment of Mo for all samples was observed by XPS, which significantly influenced the performance of the catalysts. Mo was found to be both a structural and a chemical promoter. Strong metal-support interactions were further achieved by modification of alumina with magnesia. With 12 wt\% Mg incorporated, the catalysts showed 40\% total oxygenate selectivity including 11\% selectivity to ethanol.}, language = {en} }