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Facile Structure Tuning of a Methanol-Synthesis Catalyst towards the Direct Synthesis of Dimethyl Ether from Syngas

Authors
Jeong, CheonwooHam, HyungwonBae, Jong WookKang,Dong-ChangShin, Chae-HoBaik, Joon HyunSuh, Young-Woong
Issue Date
Dec-2017
Publisher
WILEY-V C H VERLAG GMBH
Keywords
bifunctional catalysts; heterogeneous catalysis; nanostructures; precipitation; precursor chemistry
Citation
CHEMCATCHEM, v.9, no.24, pp 4484 - 4489
Pages
6
Journal Title
CHEMCATCHEM
Volume
9
Number
24
Start Page
4484
End Page
4489
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146945
DOI
10.1002/cctc.201701167
ISSN
1867-3880
1867-3899
Abstract
Heterogeneous catalysts of bifunctionality offer improved process efficiency and enhanced product yield in multistep chemical transformations conducted in a consecutive manner. However, this has seldom been realized in coprecipitated catalysts owing to the complexity of the synthesis. By adjusting the synthesis protocol of an industrial methanol-synthesis catalyst as a model system, herein we demonstrate the bifunctional effect of Al2O3/Cu/ZnO catalysts to enable the direct production of dimethyl ether from synthesis gas with yields that are 2-3-fold higher than those obtained with their conventional counterparts, with a greater number of accessible Cu surface atoms and more Al2O3 acid sites existing at the external particle surface. This is achieved by preparing the fully developed Cu,Zn precursor of a specific structure with surface-decorated Al species. Our approach paves the way towards the rational design of multicomponent precipitated catalysts with tunable bifunctionality for practical cascade reactions.
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공과대학 (화공생명공학부)
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