In order to improve the capacity of discharge plasma for VOCs decomposition and reduce the reaction temperature in the discharge process

the pulse-modulated power is used to drive multilayered plate-type dielectric barrier discharge device to produce non-thermal temperature plasma. The discharge temperature

O

3

production and isopentane decomposition are examined. The results show that the pulse-modulated discharge can be divided into discharge stage and discharge-gap stage

and energy is mainly concentrated in the discharge stage. Decrease of the duty cycle can reduce ohmic heat effect and the temperature of the reactor

and improve the energy efficiency generated by O

3

. Pulse-

modulated discharge can effectively utilize the radicals generated in the discharge stage. The energy efficiency of 9.8 g/（kWh） is obtained under the condition of duty cycle 20%.