Improvement of Lifetime Using Transition Metal-Incorporated SAPO-34 Catalysts in Conversion of Dimethyl Ether to Light Olefins

Figure 2

SEM images of the SAPO-34 and MeAPSO-34 catalysts: (a) SAPO-34, (b) MnAPSO-34, (c) FeAPSO-34, and (d) NiAPSO-34.

(a)

(b)

(c)

(d)