KIT | KIT-Bibliothek | Impressum | Datenschutz

Supported Intermetallic PdZn Nanoparticles as Bifunctional Catalysts for the Direct Synthesis of Dimethyl Ether from CO-Rich Synthesis Gas [in press]

Gentzen, Manuel; Doronkin, Dmitry E.; Sheppard, Thomas L.; Zimina, Anna; Li, Haisheng; Jelic, Jelena; Studt, Felix; Grunwaldt, Jan-Dierk; Sauer, Jörg; Behrens, Silke

Abstract:
The single-step syngas-to-dimethyl ether (STD) process entails economic and technical advantages over the current industrial two-step process. Pd/ZnO-based catalysts have recently emerged as interesting alternatives to currently used Cu/ZnO/Al2O3 catalysts, but the nature of the active site(s), the reaction mechanism, and the role of Pd and ZnO in the solid catalyst are not well established. Now, Zn-stabilized Pd colloids with a size of 2 nm served as the key building blocks for the methanol active component in bifunctional Pd/ZnO-gamma-Al2O3 catalysts. The catalysts were characterized by combining high-pressure operando X-ray absorption spectroscopy and DFT calculations. The enhanced stability, longevity, and high dimethyl ether selectivity observed makes Pd/ZnO-gamma-Al2O3 an effective alternative system for the STD process compared to Cu/ZnO/gamma-Al2O3.

Open Access Logo


Verlagsausgabe §
DOI: 10.5445/IR/1000098743
Veröffentlicht am 08.10.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -Technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2019
Sprache Englisch
Identifikator ISSN: 1433-7851
KITopen-ID: 1000098743
Erschienen in Angewandte Chemie / International edition
Vorab online veröffentlicht am 19.09.2019
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page