Synthesis of CaO-CeO2 catalysts by soft template method for biodiesel production

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Zheng, Y.C.^1 ; Yu, X.H.^1,2 ; Yang, J.^3

Key Laboratory of Pressure Systems and Safety (MOE), School of Mechanical Engineering, East China University of Science and Technology, Shanghai, China^1

State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China^2

School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, China^3

关键词: Biodiesel production;    Calcination temperature;    Interconnected porous structure;    Optimum reaction conditions;    Soft template methods;    Solid base catalysts;    Structure directing agents;    Transesterification reaction;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012048/pdf
DOI  :  10.1088/1755-1315/69/1/012048

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Biodiesel has recently gained extensive attention. Catalysts play an important role in producing biodiesel by transesterification reaction. In this study, CaO-CeO2catalysts are developed as the solid base catalyst. Using PDMS-PEO as a structure-directing agent, the prepared CaO-CeO2catalysts have a three-dimensional interconnected porous structure, which benefits the transesterification reaction. While the added Ce slightly decreases the catalytic activity, the stability of the catalyst shows remarkable improvement. Considering the catalytic activity and stability, the best catalyst is determined to be catalyst 0.15-1073 (Ce/Ca molar ratio of 0.15 and calcination temperature of 1073 K). Under optimum reaction conditions, the biodiesel yield reaches to 97.5% and metal leaching is 117.7 ppm. For catalyst 0.15-1073 regenerated after four reaction cycles, the biodiesel yield is 94.1%. The results reveal that the CaO-CeO2catalyst has good potential for application in large-scale biodiesel production in the future.