Table 3. Nickel loading, surface area and pore size for fresh 10%, 20%, 30% Ni/C catalysts and used 20% Ni/C catalysts.

Catalyst	Nickel (wt.%)	BET surface area (m2/g)	Pore volume (cm3/g)	Average pore size (nm)
10% Ni/C(fresh)	9.2	722	0.642	3.6
20% Ni/C(fresh)	18.9	651	0.566	3.5
30% Ni/C(fresh)	27.4	624	0.550	3.4
20% Ni/C(used)	17.8	565	0.519	3.7