Journal
ENERGY CONVERSION AND MANAGEMENT
Volume 229, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2020.113760
Keywords
Biodiesel; MOFs; Heterogeneous catalyst; Transesterification; Esterification; Reusability
Categories
Funding
- National Natural Science Foundation of China [51806126]
- Project of Shandong Province Higher Educational Science and Technology Program [J18KA087]
- Doctoral Fund of Shandong Jianzhu University [XNBS1603]
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Biodiesel is a green and renewable energy source, and the use of heterogeneous catalysts like metal organic frameworks (MOFs) in its production process is gaining attention due to the difficulties of recovery and reuse associated with traditional homogeneous catalysts. The unique structure and advantages of MOFs make them a promising candidate for catalyzing biodiesel production.
Biodiesel is a green and renewable energy, which is supposed to be a promising substitute to fossil diesel. Normally, biodiesel is produced via transesterification/esterification with assistance of homogeneous or heterogeneous catalyst. However, homogeneous catalyst cannot be recovered and reused. In particular, the downstream purification is needed resulting in large number of wastewater. Thereby, heterogeneous catalysts are put forward to address these above problems. The catalytic activity of heterogeneous catalyst (alkaline, acid, and enzyme) is restricted by the active site dispersity, available active site amount, and catalytic stability. With regard to this, supporting active site on carrier is a feasible technology to improve catalytic performance. Metal organic frameworks (MOFs) are a special class of coordination polymers, which are self-assembled by metal ion and organic ligand with topological structure. The promising merits of huge porosity, uniform pore size, controllable functional groups, and structural tenability of MOFs are highly desirable in synthesizing catalyst for transesterification/esterification. This paper reviews the current application of MOFs in catalyzing transesterification/esterification, which is involved with catalytic mechanism, MOFs types, especially the MOFs catalyst and MOFs derivate based catalysts. Meanwhile, the reusability of MOFs based catalyst are further analyzed. Thereafter, the effect of transesterification/esterification parameters on catalytic performance are comprehensively summarized. The future perspectives for MOFs application in biodiesel production are also discussed.
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