Catalytic synthesis of biodiesel by immobilized lipase in ionic liquid

With the increasing awareness of global energy and environmental protection, more and more countries have begun to turn to biodiesel. Biodiesel is a liquid fuel produced by renewable energy.Compared with traditional petroleum diesel, it has lower greenhouse gas emissions, higher energy self-sufficiency and more optimized environmental benefits. At present, the production of biodiesel mainly relies on biomass pyrolysis technology, but this technology has problems such as harsh reaction conditions and low yield. Therefore, it is very important to study a more efficient biodiesel catalyst to improve the yield of biodiesel and reduce the production cost.

In this respect, the catalytic synthesis of biodiesel by immobilized lipase in ionic liquids has become an emerging research field. Immobilized lipase is a catalyst in which lipase is immobilized

on a carrier through an immobilization process, which has the characteristics of high stability, high catalytic efficiency and easy recycling. Ionic liquid is an ionic liquid with good thermal stability, chemical inertness, reproducibility and environmental protection, and can be used as an excellent reaction medium and solvent, and is widely used in the field of chemical reaction research.

The reaction mechanism of the catalytic synthesis of biodiesel in immobilized lipase/ionic liquid can be mainly divided into two steps: first, the immobilized lipase performs esterification reaction on the biomass substrate, that is, fatty acids and glycerides are converted into triglycerides; The second is to carry out the alcoholysis reaction of the generated triglycerides, that is, to react methanol with triglycerides to generate trimethyl esters and glycerol. Immobilized lipase is used as a catalyst, which can improve the reaction rate and conversion rate. As the reaction medium and solvent, ionic liquid can adjust the reaction conditions, improve the reaction environment, and improve the catalytic efficiency and stability.

In summary, the synthesis of biodiesel catalyzed by immobilized lipase in ionic liquid is an emerging research direction, which has broad application prospects in realizing high-efficiency, low-cost and environmental-friendly biodiesel production. With the deepening of research, it is believed that this technology will continue to be developed and improved, making greater contributions to global energy transformation and sustainable development. Biodiesel is a liquid fuel produced by renewable energy, which has lower greenhouse gas emissions, higher energy self-sufficiency and more optimized environmental benefits. In order to improve the yield of biodiesel and reduce the production cost, many researchers began to explore the technology of using immobilized lipase in ionic liquid to catalyze the synthesis of biodiesel.