Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst
Abstract
Тhe MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99–1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different conditions: 388–468 K, methanol-to-oil mole ratio 12:1–30:1, catalyst amount based on the mass of oil 0–12.5 %. The complete triacylglycerols (TAG) conversion and high yield of fatty acid methyl ester (FAME) was obtained after 1 h at 458 K, methanol-to-oil mole ratio 30:1 and 10 % of catalyst. Kinetics of transesterification process was analyzed by three models: the simple first order irreversible reaction rate, as well as two more complex models recently reported in literature. The catalyst reuse in transesterification process was tested and the average values of 99.0 % of TAG conversion and 97.5 % of FAME yield were obtained after 8 consecutive runs. Different techniques were used to characterize fresh and used MnCO3/Na silicate catalyst. The determined amounts of ...leached Na (<500 ppm) and Mn (<20 ppm) in biodiesel phase implied that the homogeneous-heterogeneous process influences the catalyst selectivity, whereby leached Na enables the complete transformation of TAG to FAME.
Keywords:
kinetics / MnCO3/Na-silicate / reusability / transesterificationSource:
Journal of the Serbian Chemical Society, 2018, 83, 3, 345-365Publisher:
- Belgrade : Serbian Chemical Society
Funding / projects:
- International S&T Cooperation Program of China, Grant No. 2013DFG92250
- Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes (RS-45001)
DOI: 10.2298/JSC170612005Z
ISSN: 0352-5139
WoS: 000429093200007
Scopus: 2-s2.0-85045011341
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Zhang, Yanan AU - Liu, Hui AU - Zhu, Xiaochan AU - Lukić, Ivana AU - Zdujić, Miodrag AU - Shen, Xiang AU - Skala, Dejan PY - 2018 UR - https://dais.sanu.ac.rs/123456789/3751 AB - Тhe MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99–1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different conditions: 388–468 K, methanol-to-oil mole ratio 12:1–30:1, catalyst amount based on the mass of oil 0–12.5 %. The complete triacylglycerols (TAG) conversion and high yield of fatty acid methyl ester (FAME) was obtained after 1 h at 458 K, methanol-to-oil mole ratio 30:1 and 10 % of catalyst. Kinetics of transesterification process was analyzed by three models: the simple first order irreversible reaction rate, as well as two more complex models recently reported in literature. The catalyst reuse in transesterification process was tested and the average values of 99.0 % of TAG conversion and 97.5 % of FAME yield were obtained after 8 consecutive runs. Different techniques were used to characterize fresh and used MnCO3/Na silicate catalyst. The determined amounts of leached Na (<500 ppm) and Mn (<20 ppm) in biodiesel phase implied that the homogeneous-heterogeneous process influences the catalyst selectivity, whereby leached Na enables the complete transformation of TAG to FAME. PB - Belgrade : Serbian Chemical Society T2 - Journal of the Serbian Chemical Society T1 - Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst SP - 345 EP - 365 VL - 83 IS - 3 DO - 10.2298/JSC170612005Z UR - https://hdl.handle.net/21.15107/rcub_dais_3751 ER -
@article{ author = "Zhang, Yanan and Liu, Hui and Zhu, Xiaochan and Lukić, Ivana and Zdujić, Miodrag and Shen, Xiang and Skala, Dejan", year = "2018", abstract = "Тhe MnCO3/Na silicate (Mn/Na/Si mole ratio of 4.65:1:1.65) catalyst in the form of solid particles with diameter of 0.99–1.99 mm was used as a catalyst for transesterification of soybean oil in batch autoclave at different conditions: 388–468 K, methanol-to-oil mole ratio 12:1–30:1, catalyst amount based on the mass of oil 0–12.5 %. The complete triacylglycerols (TAG) conversion and high yield of fatty acid methyl ester (FAME) was obtained after 1 h at 458 K, methanol-to-oil mole ratio 30:1 and 10 % of catalyst. Kinetics of transesterification process was analyzed by three models: the simple first order irreversible reaction rate, as well as two more complex models recently reported in literature. The catalyst reuse in transesterification process was tested and the average values of 99.0 % of TAG conversion and 97.5 % of FAME yield were obtained after 8 consecutive runs. Different techniques were used to characterize fresh and used MnCO3/Na silicate catalyst. The determined amounts of leached Na (<500 ppm) and Mn (<20 ppm) in biodiesel phase implied that the homogeneous-heterogeneous process influences the catalyst selectivity, whereby leached Na enables the complete transformation of TAG to FAME.", publisher = "Belgrade : Serbian Chemical Society", journal = "Journal of the Serbian Chemical Society", title = "Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst", pages = "345-365", volume = "83", number = "3", doi = "10.2298/JSC170612005Z", url = "https://hdl.handle.net/21.15107/rcub_dais_3751" }
Zhang, Y., Liu, H., Zhu, X., Lukić, I., Zdujić, M., Shen, X.,& Skala, D.. (2018). Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst. in Journal of the Serbian Chemical Society Belgrade : Serbian Chemical Society., 83(3), 345-365. https://doi.org/10.2298/JSC170612005Z https://hdl.handle.net/21.15107/rcub_dais_3751
Zhang Y, Liu H, Zhu X, Lukić I, Zdujić M, Shen X, Skala D. Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst. in Journal of the Serbian Chemical Society. 2018;83(3):345-365. doi:10.2298/JSC170612005Z https://hdl.handle.net/21.15107/rcub_dais_3751 .
Zhang, Yanan, Liu, Hui, Zhu, Xiaochan, Lukić, Ivana, Zdujić, Miodrag, Shen, Xiang, Skala, Dejan, "Biodiesel synthesis and kinetic analysis based on MnCO3/Na silicate as heterogeneous catalyst" in Journal of the Serbian Chemical Society, 83, no. 3 (2018):345-365, https://doi.org/10.2298/JSC170612005Z ., https://hdl.handle.net/21.15107/rcub_dais_3751 .