Pyrolysis Mechanism of Ionic Liquid Under Microwave Irradiation and the Formation of N-Doped Carbon

The pyrolysis mechanism of the ionic liquid [BMIm]N(CN)(2) under microwave irradiation was discussed for the first time. The trimerization of the anion N(CN)(2) and the formation of a framework were firstly caused by the microwave irradiation. And then the carbonization of the framework occurred when the temperature reached 330 degrees C. The pyrolysis product was graphitic nitrogen-doped carbon and mainly originated from the anion N(CN)(2)(-). The nitrogen content and graphitization degree of the nitrogen-doped carbon was relied on the pyrolysis temperature.