Indirect CO2 Methanation: Hydrogenolysis of Cyclic Carbonates Catalyzed by Ru‐Modified Zeolite Produces Methane and Diols

We report a ruthenium‐modified zeolite which efficiently transforms propylene carbonate to propylene glycol and methane, under solvent‐free conditions. The catalyst achieved high product selectivity and no significant ageing effect was observed after multiple cycles. The resulting liquid product (wa...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2019-01, Vol.58 (2), p.557-560
Main Authors: Lee, Wei‐Tse, van Muyden, Antoine P., Bobbink, Felix D., Huang, Zhangjun, Dyson, Paul J.
Format: Article
Language:English
Subjects:
Aging
Carbon dioxide
Carbonates
Chemical synthesis
Diols
Energy storage
heterogeneous catalysis
Hydrogenolysis
Methanation
Methane
organic carbonates
Organic chemistry
Propylene
Propylene glycol
Ruthenium
ruthenium nanoparticles
Selectivity
sustainable chemistry
Vapor phases
Zeolites
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Summary:We report a ruthenium‐modified zeolite which efficiently transforms propylene carbonate to propylene glycol and methane, under solvent‐free conditions. The catalyst achieved high product selectivity and no significant ageing effect was observed after multiple cycles. The resulting liquid product (water‐containing glycol) can be directly used as anti‐freeze solution and the gas phase can directly be used as an energy carrier in the form of H2‐enriched methane. This process efficiently bridges energy storage and an important chemical synthesis under sustainable (CO2 consuming) conditions. OMEGA is not the end: A nanocrystalline ruthenium catalyst, embedded into a zeolite, catalyses the hydrogenolysis of cyclic carbonates into glycols and methane. The catalyst displays unprecedented selectivity towards methane, and the reaction may be considered as an extension of the OMEGA process, in which both a valuable liquid and gaseous product are formed.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201811086