Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 39, Issue 4, Pages 723-729Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201400603
Keywords
2,2-Dimethoxy propane; Dimethyl carbonate synthesis; Green chemistry; Hydrolysis; Spindle-CeO2 catalyst
Categories
Funding
- National Natural Science Foundation of China (NSFC) [21176179, 21325626]
- Program for New Century Excellent Talents in University [NCET-13-0411]
- Program of Introducing Talents of Discipline to Universities [B06006]
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The direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol is an attractive approach based on green chemistry. The influence of the addition of 2,2-dimethoxy propane (DMP) on DMC formation was investigated over spindle-CeO2, cube-CeO2, and octahedron-CeO2. Among these catalysts, spindle-CeO2 showed a more favorable catalytic performance than the other CeO2 catalysts for the direct DMC synthesis with the addition of DMP. The yield of DMC was greatly improved by in situ removal of water from the reaction system through the addition of DMP. This indicated that hydrolysis of DMP overcomes the thermodynamic limitations of DMC formation and is highly effective for increasing the DMC yield. Thermodynamic calculations and the higher equilibrium constant supported this result.
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