A series of low-cost and high-efficiency solid base heterogeneous catalysts were prepared by using peat as raw material, to promote the transesterification reaction of glycerol with dimethyl carbonate to produce glycerol carbonate (GC). The chemical and structural properties of the catalysts were investigated by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), N2 adsorption/desorption, thermogravimetric analysis (TG) and the Hammett indicator method. The catalyst preparation conditions, the catalytic reaction factors and the catalyst reusability were studied. The best performance was observed for the resulting 30K/PB-600 catalyst, glycerol conversion of 99.1% and GC yield of 95.7% were achieved at catalyst load of 5wt%, DMC/glycerol molar ratio of 4:1, reaction time of 90 min and reaction temperature of 80oC. After 5 repeated used, the conversion of glycerol and the yield of GC attained 94.2% and 69.8%, respectively. It was found that the leaching of K+ ions into reaction media led to the deactivation.
HU bu-qing
,
WANG shu-xiao
,
YUAN Hao-ran
,
SHAN rui
,
LU Li-li
,
SHI yue-yue
. A Novel Peat Biochar Supported Catalyst for the Transesterification Reaction of Glycerol to Glycerol Carbonate[J]. Advances in New and Renewable Energy, 2018
, 6(1)
: 69
-75
.
DOI: 10.3969/j.issn.2095-560X.2018.01.011
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