The synthesis of methanol from CO/CO2/H2 gas over Cu/Ce1-xZrxO2 catalysts

Title
The synthesis of methanol from CO/CO2/H2 gas over Cu/Ce1-xZrxO2 catalysts
Authors
유천재이대원김민성문동주이관영
Keywords
Methanol synthesis; Synthesis gas; CexZr1-xO2; Cu surface area; Oxygen vacancy
Issue Date
2013-11
Publisher
Journal of molecular catalysis A, Chemical
Citation
VOL 378, 255-262
Abstract
In this study, we investigated the catalysis of Cu/Ce1−xZrxO2for the synthesis of methanol from CO/CO2/H2gas. The Ce1−xZrxO2was synthesized by a surfactant (CTAB)-assisted co-precipitation method to yieldhigh surface area supports, and Cu was deposited on the supports by a deposition–precipitation methodto promote high Cu dispersion. The incorporation of Zr into the CeO2lattice transformed the structureinto a defective, pseudo-cubic one and the amount of incorporated Zr (x) determined the concentration ofoxygen vacancy in the lattice. It was proposed that the oxygen vacancy in Ce1−xZrxO2played an importantrole in the catalysis by determining concentration and mobility of the adsorbed COxon the catalyst. Theactivity was also influenced by the exposed surface area of Cu and surface acidity of the catalyst, bothof which were closely related to the amount of Zr in the support. To reveal the influences of the catalystproperties on methanol production, various characterization techniques were used, such as XPS, Ramanspectroscopy, XRD, H2-TPR, NH3-TPD, BET and N2O titration methods.
URI
http://pubs.kist.re.kr/handle/201004/46340
ISSN
13811169
Appears in Collections:
KIST Publication > Article
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