Synthesis and Catalytic Performances of a Novel Zn-MOF Catalyst Bearing Nickel Chelating Diimine Carboxylate Ligands for Ethylene Oligomerization
Table 1
Effects of (Al)/(Ni) on the activity and distribution of oligomera.
Entry
Cat.
(Al)/(Ni)
Oligomer distributionb
-Olefinb/%
Aoc
Apc
C4/ΣC
C6/ΣC
C8/ΣC
≧C10/ΣC
1
A
200
29.8
15.4
24.3
30.5
30.7
0.9
trace
2
A
500
42.5
30.9
20.2
6.4
37.0
1.6
0.018
3
A
1000
87.4
2.9
5.2
4.5
85.8
8.9
trace
4
A
1500
91.8
2.9
3.3
2.0
92.2
6.7
trace
5
B
200
34.4
27.5
28.4
9.7
69.1
2.5
trace
6
B
500
49.2
19.4
18.2
13.2
50.2
7.1
trace
7
B
1000
58.9
14.4
10.5
16.2
20.9
12.0
trace
8
B
1500
72.4
14.1
4.5
9.0
15.0
8.2
trace
9
C
200
29.9
16.6
15.2
38.3
24.9
4.7
—
10
C
500
35.9
22.1
18.9
23.1
19.8
5.7
—
11
C
1000
37.7
18.5
22.5
21.3
23.7
6.9
—
12
C
1500
49.6
25.6
22.8
2.0
24.4
3.2
—
Note: areaction conditions: h, mol/L, atm, °C; b-olefin content determined by GC; cAo represents the activity for oligomers, Ap is the activity for polymer, both activities have the same unit of ×105 g/(mol·Ni·h·atm).
