Journal
RSC ADVANCES
Volume 8, Issue 48, Pages 27216-27226Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra04028a
Keywords
-
Categories
Funding
- Science Foundation for Young Scientists of Shanxi Province, China [201701D221052]
- Independent Research Project of the State Key Laboratory of Coal Conversion [2018BWZ002]
- Natural Science Foundation of Shanxi Province [201601D102006]
- Key Science and Technology Program of Shanxi Province, China [MD2014-09, MD2014-10]
Ask authors/readers for more resources
A series of Ce/SBA-15 catalysts with different degrees of hydrophobicities were prepared via a post-grafting method and used for the direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol. The Ce/SBA-15-6 catalyst exhibited the highest DMC yield of 0.2%, which was close to the equilibrium value under the reaction conditions of 130 degrees C, 12 h and 12 MPa. The catalysts were characterized via XRD, BET, FT-IR, solid-state Si-29 MAS NMR, CA, TEM, XPS and NH3/CO2-TPD; the results indicated that the hydrophobicity of the catalysts facilitated the creation of oxygen vacancies, which could act as Lewis acids to activate methanol. Higher amounts of moderate acid sites led to higher yields of DMC. In addition, the hydrophobicity of the catalysts could also reduce the adsorbed water on their surface and increase the DMC yield while shortening the reaction time.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available