Table 1 Ethylene polymerization studies with the Ni catalysts^a.

Ent	Cat.	Ni /µmol	P /atm	T /°C	Yield /g^b	Act. ^b (10⁶)	\({{{{T}}}_{{{{{{\rm{m}}}}}}}}^{{{{{{\rm{c}}}}}}}\) /°C	M_n^d (10⁴)	M_w/M_n^d
1	Ni	0.5	8	80	0.52	6.2	135.9	19.4	2.4
2	Ni-OH	0.5	8	80	0.68	8.2	136.2	29.2	2.3
3	Ni-ONa	0.5	8	80	1.01	12.1	137.3	58.4	2.3
4	Ni-OK	0.5	8	80	1.35	16.2	138.0	72.4	2.9
5	Ni-SiO₂	0.5	8	80	trace
6	Ni-ONa-SiO₂	0.1	8	80	0.51	30.6	138.5	94.4	2.1
7	Ni-ONa-TiO₂	0.1	8	80	0.63	37.8	138.1	113.4	2.2
8	Ni-ONa-Al₂O₃	0.1	8	80	0.78	46.8	139.0	143.9	2.7
9	Ni-ONa-ZnO	0.1	8	80	0.80	48.0	138.9	155.0	2.5
10	Ni-ONa-MgO	0.1	8	80	0.88	52.8	139.7	241.0	2.3
11	Ni-ONa-MgO	0.1	30	80	1.61	96.6	139.2	256.9	2.5
12	Ni-ONa-MgO	0.1	30	30	0.35	21.0	139.9	359.5	2.4
13	Ni-F-ONa-MgO	0.1	8	80	1.03	61.8	138.5	264.0	3.0
14	Ni-F-ONa-MgO	0.1	30	80	1.82	109.2	138.2	326.5	2.7
15	Ni-F-ONa-MgO	0.1	30	30	0.32	19.2	138.9	449.2	2.0

^aConditions: The same metal loading (20 µmol/g) was used for all solid supports (10 µmol/g loading for Ni-SiO₂); 5 mL n-heptane; time = 10 min.
^bPolymer yield and activity values are average of at least two runs. Activity = 10⁶g mol⁻¹ h⁻¹.
^cMelting temperature determined by DSC.
^dM_n: 10⁴g mol⁻¹, M_n and M_w/M_n determined by GPC in trichlorobenzene at 150 °C.

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