Abstract
Potential of carbide slag as transesterification catalyst is validated. Combined with X-ray fluorescence for ingredient determination, X-ray diffraction for textural phase analysis, scanning electron microscope for surface morphology observation and Hammett indicator for basic strength mensuration, thermal event of carbide slag is investigated through thermogravimetric analysis to estimate the potential of this calcium-based industrial waste as transesterification catalyst. Further, kinetic parameters are calculated through model-free method, where the experiments are conducted at temperature heating rates of 5, 10, 15, and 20 K min−1. As for activation energy and reaction order, Vyazovkin method and Avrami theory are respectively mentioned. Meanwhile, catalytic performance of carbide slag is labeled by transesterification efficiency and calcium hydroxide is conditionally mentioned for comparison. In conclusion, potential of carbide slag as transesterification catalyst is adequately validated.
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Acknowledgements
This work is supported by the National Natural Science Foundation of China (51206098), the Promotive Research Fund for Excellent Young and Middle-aged Scientists of Shandong Province, China (BS2012NJ005), and the China Postdoctoral Science Foundation (2012M511021).
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Niu, S., Liu, M., Lu, C. et al. Thermogravimetric analysis of carbide slag. J Therm Anal Calorim 115, 73–79 (2014). https://doi.org/10.1007/s10973-013-3268-z
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DOI: https://doi.org/10.1007/s10973-013-3268-z