Please use this identifier to cite or link to this item: https://doi.org/10.3390/catal8090343
Title: Effect of in-situ dehydration on activity and stability of Cu–Ni–K2O/diatomite as catalyst for direct synthesis of dimethyl carbonate
Authors: Han D.
Chen Y.
Wang S.
Xiao M.
Lu Y. 
Meng Y.
Keywords: Alkali promoter
Carbon dioxide
Catalysis
Dehydration
Dimethyl carbonate
Issue Date: 2018
Publisher: MDPI AG
Citation: Han D., Chen Y., Wang S., Xiao M., Lu Y., Meng Y. (2018). Effect of in-situ dehydration on activity and stability of Cu–Ni–K2O/diatomite as catalyst for direct synthesis of dimethyl carbonate. Catalysts 8 (9) : e3015. ScholarBank@NUS Repository. https://doi.org/10.3390/catal8090343
Abstract: An in-situ dehydrating system built in a continuous flow fixed-bed bubbling reactor for direct synthesis of dimethyl carbonate (DMC) was designed. 3A molecular sieve (MS) was selected as the ideal dehydrating agent and the water trapping efficiency was studied. The effect of dehydrating agent/catalyst ratio, the dehydrating temperature and pressure, as well as the space velocity on the direct DMC synthesis catalyzed by K2O-promoted Cu朜i was further investigated. These results demonstrated that 3A MS could effectively dehydrate the reaction system at the optimal conditions of 120癈 and 1.0 MPa with gas space velocity (GHSV) of 600 h?1, thereby greatly shifting the reaction equilibrium toward high DMC yield. Higher DMC yield of 13% was achieved compared with undehydrated reaction. Moreover, the catalyst can be highly stabilized by 3A MS dehydration with stable performs over 22 h. � 2018 by the authors. Licensee MDPI, Basel, Switzerland.
Source Title: Catalysts
URI: http://scholarbank.nus.edu.sg/handle/10635/152024
ISSN: 20734344
DOI: 10.3390/catal8090343
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