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Kinetic modeling for direct synthesis of dimethyl ether from syngas over a hybrid Cu/ZnO/Al2O3/ferrierite catalyst
  • Park, Jongmin ;
  • Woo, Yesol ;
  • Jung, Hyun Seung ;
  • Yang, Haelin ;
  • Lee, Won Bo ;
  • Bae, Jong Wook ;
  • Park, Myung June
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Publication Year
2022-04-01
Journal
Catalysis Today
Publisher
Elsevier B.V.
Citation
Catalysis Today, Vol.388-389, pp.323-328
Keyword
Dimethyl etherDirect synthesisHybrid catalystKinetic modelOperating conditionsParameter estimation
Mesh Keyword
Conventional catalystCore shell structureDiffusion resistanceHigh activation energyHybrid catalystsKinetic modelingMethanol dehydrationMethanol synthesis
All Science Classification Codes (ASJC)
CatalysisChemistry (all)
Abstract
A kinetic model for the direct synthesis of dimethyl ether (DME) from syngas over a hybridized Cu/ZnO/Al2O3/ferrierite (CZA/FER) catalyst was developed. Kinetic parameters including reaction rate and equilibrium constants were estimated by fitting experimental data for the hybrid catalyst, and these were compared with the reported values for conventional catalysts. High activation energies for the hybrid CZA/FER catalyst showed that the methanol synthesis step may have more control over the rate than the methanol dehydration step. This may be attributed to the core-shell structure of the hybrid catalyst in such a way that the diffusion resistance plausibly plays an important role in the kinetics; this feature was reflected in our estimated kinetic parameters. Using the developed kinetic model, a temperature between 200 and 220 °C was determined for thermal energy efficiency, and a further analysis provided the optimal range of the total pressure and space velocity.
ISSN
0920-5861
Language
eng
URI
https://aurora.ajou.ac.kr/handle/2018.oak/31358
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85086449102&origin=inward
DOI
https://doi.org/2-s2.0-85086449102
Journal URL
http://www.sciencedirect.com/science/journal/09205861
Type
Article
Funding
This research was supported by the C1 Gas Refinery Program through the National Research Foundation of Korea (NRF) , funded by the Ministry of Science, ICT & Future Planning (No. NRF-2018M3D3A1A01055765 and NRF-2018M3D3A1A01018009 ) and Human Resources Development of the KETEP grant funded by the Ministry of Trade, Industry & Energy of the Korean Government (No. 20154010200820 ).
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Park, Myung-June Image
Park, Myung-June박명준
Department of Chemical Engineering
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