KIT | KIT-Bibliothek | Impressum | Datenschutz

Kinetics of the direct DME synthesis from CO$_{2}$ rich syngas under variation of the CZA-to-γ-Al$_{2}$O$_{3}$ ratio of a mixed catalyst bed

Delgado Otalvaro, Nirvana 1; Sogne, Gerardo 1; Herrera Delgado, Karla ORCID iD icon 1; Wild, Stefan 1; Pitter, Stephan ORCID iD icon 1; Sauer, Jörg ORCID iD icon 1
1 Karlsruher Institut für Technologie (KIT)


The one-step synthesis of dimethyl ether over mechanical mixtures of Cu/ZnO/Al$_{2}$O$_{3}$ (CZA) and γ-Al$_{2}$O$_{3}$ was studied in a wide range of process conditions. Experiments were performed at an industrially relevant pressure of 50 bar varying the carbon oxide ratio in the feed (CO$_{2}$ in COx from 20 to 80%), temperature (503–533 K), space-time (240–400 kg$_{cat}$s m$_{gas}$$^{-3}$), and the CZA-to-γ-Al$_{2}$O$_{3}$ weight ratio (from 1 to 5). Factors favoring the DME production in the investigated range of conditions are an elevated temperature, a low CO$_{2}$ content in the feed, and a CZA-to-γ-Al$_{2}$O$_{3}$ weight ratio of 2. A lumped kinetic model was parameterized to fit the experimental data, resulting in one of the predictive models with the broadest range of validity in the open literature for the CZA/γ-Al$_{2}$O$_{3}$ system.

Verlagsausgabe §
DOI: 10.5445/IR/1000137853
Veröffentlicht am 22.09.2021
DOI: 10.1039/d1ra03452a
Zitationen: 11
Web of Science
Zitationen: 11
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 13.07.2021
Sprache Englisch
Identifikator ISSN: 2046-2069
KITopen-ID: 1000137853
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Erschienen in RSC Advances
Verlag Royal Society of Chemistry (RSC)
Band 11
Heft 40
Seiten 24556–24569
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Nachgewiesen in Dimensions
Web of Science
Relationen in KITopen
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page