Pore Structure of Oil Shale Heated by Using Conduction and Microwave Radiation: A Case Study of Oil Shale from the Fushun in China

Figure 9

SEM images of oil shale before and after conduction-based heating. (a) Oil shale in the initial state. (b) Oil shale at 300°C. (c) Oil shale at 400°C. (d) Oil shale at 500°C.

(a)

(b)

(c)

(d)