Microwave assisted chemical reaction feature: fast speed, high productivity, less catalyst, less reactive solvent, easy to be recycled, high purity, easy to be handled, and short synthetic route.
1. Microwave heating’s speed is fast and homogeneous, no temperature gradient, no delayed reaction. Microwave can make solvent thermalized instantly to make the liquid reach to higher temperature before boiling. Microwave chemical reaction speedup is due to its selective heating for polar organics that is microwave heating effect.
2. Microwave not only to make reactant molecular movement severely, temperature increment. And that the Lorentz magnetic force from microwave to ion and polar molecule to make the relative movement among these particles specially, that is microwave non-thermal effect.
Microwave reaction principle: In microwave synthesis process, microwave and the molecule or ion in reaction mixture couple with each other directly, by dipole rotation or ion conduction to guide the energy from microwave to the heated material, which makes the energy increase rapidly in reaction system. In one side it makes the energy act on the reaction more effectively that make the reaction speed faster, reaction yield higher, reaction materials cleaner. In another side, microwave transfer the energy to reaction materials directly (transfer to dipole energy), so microwave can make some reaction possible which that cannot happen under traditional heating way, which bring total innovative possibility