Porous Diatomite-Immobilized Cu–Ni Bimetallic Nanocatalysts for Direct Synthesis of Dimethyl Carbonate

Figure 2

SEM of the samples. (a) Natural diatomite, (b) treated diatomite, (c) 15% (2Cu–Ni)/diatomite (×10000), and (d) 15% (2Cu–Ni)/diatomite (×25000).

(a)

(b)

(c)

(d)