Oxidative Fluorination of Cu/ZnO Methanol Catalysts
Valentin Dybbert
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorSamuel Matthias Fehr
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorFlorian Klein
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorDr. Achim Schaadt
Fraunhofer Institute for Solar Energy Systems, Heidenhofstrasse 2, 79110 Freiburg, Germany
Search for more papers by this authorAnke Hoffmann
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorDr. Elias Frei
Fritz-Haber Institute of the Max-Planck Society, Faraday-Weg 4–6, 14195 Berlin, Germany
Search for more papers by this authorDr. Emre Erdem
Faculty of Engineering and Natural Sciences, Sabanci University, 34956 Istanbul, Turkey
Search for more papers by this authorDr. Thilo Ludwig
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorProf. Dr. Harald Hillebrecht
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorCorresponding Author
Prof. Dr. Ingo Krossing
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorValentin Dybbert
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorSamuel Matthias Fehr
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorFlorian Klein
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorDr. Achim Schaadt
Fraunhofer Institute for Solar Energy Systems, Heidenhofstrasse 2, 79110 Freiburg, Germany
Search for more papers by this authorAnke Hoffmann
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorDr. Elias Frei
Fritz-Haber Institute of the Max-Planck Society, Faraday-Weg 4–6, 14195 Berlin, Germany
Search for more papers by this authorDr. Emre Erdem
Faculty of Engineering and Natural Sciences, Sabanci University, 34956 Istanbul, Turkey
Search for more papers by this authorDr. Thilo Ludwig
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorProf. Dr. Harald Hillebrecht
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorCorresponding Author
Prof. Dr. Ingo Krossing
Institut für Anorganische und Analytische Chemie and Freiburger Materialforschungszentrum (FMF), Universität Freiburg, Albertstrasse 21, 79104 Freiburg, Germany
Search for more papers by this authorDedicated to Dr. Johannes Eicher on the occasion of his 60th birthday
Abstract
The influence of a mild difluorine treatment on Cu/ZnO precatalysts for methanol synthesis was investigated. It led to the incorporation of 1.2…1.3±0.1 wt % fluoride into the material. Fluorination considerably increased the amount of ZnOx related defect sites on the catalysts and significantly increased the space-time yields. Although the apparent activation energy EA,app for methanol formation from CO2 and H2 was almost unchanged, the EA,app for the reverse water-gas shift (rWGS) reaction increased considerably. Overall, fluorination led to a significant gain in methanol selectivity and productivity. Apparently, also the quantity of active sites increased.
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