Production of biodiesel at low temperature using bifunctional Na-Fe-Ca nanocatalyst from blast furnace waste

Recently, Dr Yi-Tong Wang (Associate Prof., College of Metallurgy and Energy, North China University of Science and Technology) and Prof. Zhen Fang published an article in Fuel about using highly active bifunctional Na-Fe-Ca nanocatalyst from blast furnace dust for biodiesel production.

Nanocatalysts for biodiesel production were prepared via wet impregnation of blast furnace dust (BFD) in Na₂CO₃ (Na-BFD) and CaCO₃ (Ca-BFD) suspension solutions and calcination at 500 and 600 ^oC, respectively. Biodiesel yields of 100.0 wt% (Na-BFD₅₀₀) and 98.3 wt% (Ca-BFD₆₀₀) were achieved at 65 ^oC. Synthesized catalysts showed outstanding activity and recyclability, due to the transition of CaCO₃, Na₂CO₃ and Fe₂O₃ to nanocrystals of NaFeO₂ (29.9 nm), Ca₂Fe₂O₅ (10.5 nm), CaO (100.1 nm) and Ca₂Fe₂O₅ (50.0 nm). Na-BFD₅₀₀ achieved 95.8 wt% biodiesel yield with 16 cycles, whereas Ca-BFD₆₀₀ reached 94.1 wt% biodiesel yield with 7 cycles via magnetic separation. BFD containing convertible magnetic and active components (Fe₂O₃ and CaCO₃) was an ideal raw material to synthesize catalyst for biodiesel production with high catalytic efficiency and easy separation. The study provided a practical utilization of industrial solid waste for biodiesel production.

Related results were published in Fuel:

YT Wang, XM Wang, D Gao, FP Wang, YN Zeng, JG Li*, LQ Jiang, Q Yu, R Ji, LL Kang, YJ Wang, Zhen Fang*, Efficient Production of Biodiesel at Low Temperature Using Highly Active Bifunctional Na-Fe-Ca Nanocatalyst from Blast Furnace Waste, Fuel, 322, 124168, https://doi.org/10.1016/j.fuel.2022.124168 (2022).

Nanocatalysts produced by impregnation and calcination transesterified soybean oil to biodiesel with 100 wt% yield.

通过浸渍和煅烧制备了纳米催化剂用于催化豆油酯交换制备生物柴油，产率高达100 wt%。

高炉粉尘制备双功能Na-Fe-Ca纳米催化剂用于生物柴油合成

最近，王一同博士（华北理工大学冶金与能源学院副教授）和方真教授在国际学术期刊Fuel（IF: 6.609，Q1）发表题为“高炉粉尘制备双功能Na-Fe-Ca纳米催化剂用于生物柴油合成”的研究性论文。

利用Na₂CO₃和CaCO₃水溶液分别湿法浸渍高炉粉尘，于500 ℃和600 ^oC高温活化制备纳米催化剂（Na-BFD₅₀₀和Ca-BFD₆₀₀），用于催化豆油制备生物柴油。催化剂经高温煅烧后，CaCO₃、Na₂CO₃和Fe₂O₃晶体转变为纳米NaFeO₂（29.9 nm）、Ca₂Fe₂O₅（10.5 nm）、CaO（100.1 nm）和Ca₂Fe₂O₅（50 nm）晶体，表现出优异的催化活性和可循环利用特性。Na-BFD₅₀₀催化豆油制备生物柴油的产率达到100.0 wt%，循环16次后仍可获得95.8 wt%的产率，而Ca-BFD₆₀₀催化豆油制备生物柴油的产率达到98.3 wt%，循环7次后仍可获得94.1 wt%的产率。该研究为工业固体废物用于生物柴油制备提供了新思路。详情可见：

YT Wang, XM Wang, D Gao, FP Wang, YN Zeng, JG Li*, LQ Jiang, Q Yu, R Ji, LL Kang, YJ Wang, Zhen Fang*, Efficient Production of Biodiesel at Low Temperature Using Highly Active Bifunctional Na-Fe-Ca Nanocatalyst from Blast Furnace Waste, Fuel, 322, 124168, https://doi.org/10.1016/j.fuel.2022.124168 (2022).