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

Table 1

Influence of bimetallic loading on the direct synthesis of DMC.

Entry	Loading (wt%)^a (2CuO + NiO)	Methanol conversion^b (%)	DMC selectivity (%)	DMC yield (%)
1	3	2.32	89.4	1.86
2	5	2.73	90.2	2.17
3	10	3.96	90.9	2.42
4	15	4.50	91.2	3.93
5	20	4.05	88.7	3.36
6	25	3.67	86.1	2.88
7^c	15	2.31	92.0	2.13
8^d	15	0.58	91.5	0.53

^aMolar ratio of CuO/NiO is 2/1; ^breaction conditions: 120°C; 1.2 MPa; ^conly Cu was loaded; ^donly Ni was loaded.