Journal
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
Volume 28, Issue -, Pages 334-343Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2015.03.012
Keywords
Glycerol; Glycerol carbonate; Transesterification; Calcium oxide; Potassium nitrate
Funding
- National Natural Science Foundation of China (NSFC) [21106050]
- Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20100142120066]
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Various heterogeneous KNO3/CaO catalysts with different KNO3 loadings are prepared and used for the synthesis of glycerol carbonate from glycerol and dimethyl carbonate. It is found that the basicity of KNO3/CaO catalyst depends on the KNO3 loading and calcination temperature. Under the dimethyl carbonate/glycerol molar ratio of 3.0, reaction temperature of 70 degrees C, and reaction time of 2 h, the glycerol conversion for the fresh KNO3/CaO(15%, 700) catalyst can reach 99.23%. Recycling experiments reveal that 94.95% of glycerol conversion can be obtained at the fifth reuse for the recovered KNO3/CaO(15%, 700), which is much higher than that of unmodified CaO. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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