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Catalytic transesterification to biodiesel at room temperature over several solid bases
Yang, Xing-Xia; Wang, Yi-Tong; Yang, Ya-Ting; Feng, Er-Zhong; Luo, Jia; Zhang, Fan; Yang, Wen-Jing; Bao, Gui-Rong
2018
Source PublicationENERGY CONVERSION AND MANAGEMENT
ISSN0196-8904
Volume164Issue:xPages:112-121
AbstractThe transesterification activity of several solid base catalysts in biodiesel production was systematically studied and evaluated at room temperature. Commercialized calcined silicates showed stronger transesterification ability than other commonly-used oxides, and provided considerable biodiesel yields. Biodiesel yield of > 96% was obtained for Na2SiO3 catalyst (calcined at 400 degrees C) at 28 degrees C within 12 h with methanol/oil molar ratio of 12/1 and catalyst dosage of 5 wt%, and for CaSiO3 catalyst (calcined at 550 degrees C) at 28 degrees C within 24 h with methanol/oil molar ratio of 27/1 and catalyst dosage of 23 wt%. The high activity of Na2SiO3 came from low activation energy of 104.6 kJ/mol and considerable higher pre-exponential factor of 3.73 x 10(15) min(-1), which produced high turnover frequency of 0.234 min(-1) at 28 degrees C. The introduction of CA-O-Si structure in CaSiO3 resulted in high surface basicity of 0.70 mmol/g and high pre-exponential factor of 3.79 x 10(19) min(-1) but high activation energy of 136.4 kJ/mol. The loss of catalyst activity was mainly due to the variation of surface silicate structure during transesterification.
Department其他
KeywordRoom Temperature Transesterification Activated Silicate Biodiesel Reaction Kinetics
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10866
Collection生物能源研究组
Recommended Citation
GB/T 7714
Yang, Xing-Xia,Wang, Yi-Tong,Yang, Ya-Ting,et al. Catalytic transesterification to biodiesel at room temperature over several solid bases[J]. ENERGY CONVERSION AND MANAGEMENT,2018,164(x):112-121.
APA Yang, Xing-Xia.,Wang, Yi-Tong.,Yang, Ya-Ting.,Feng, Er-Zhong.,Luo, Jia.,...&Bao, Gui-Rong.(2018).Catalytic transesterification to biodiesel at room temperature over several solid bases.ENERGY CONVERSION AND MANAGEMENT,164(x),112-121.
MLA Yang, Xing-Xia,et al."Catalytic transesterification to biodiesel at room temperature over several solid bases".ENERGY CONVERSION AND MANAGEMENT 164.x(2018):112-121.
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