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

Figure 3

XPS of 15% (2Cu–Ni)/diatomite catalyst. (a) Cu 2p scan, (b) Ni 2p scan, and (c) survey scan.

(a)

(b)

(c)