TABLE 1.

Ni/Al molar ratio and surface properties of Ni/NiAlO_X catalysts with different calcination temperatures.

Catalyst	Ni/Al molar ratio a	After calcination			After reduction
		${\text{S}}_{\mathrm{BET}}^b$ (m2 g−1)	${\text{S}}_{meso}^c$ (m2 g−1)	${\text{S}}_{mic}^c$ (m2 g−1)	${\text{S}}_{\mathrm{BET}}^b$ (m2 g−1)	${\text{S}}_{meso}^c$ (m2 g−1)	${\text{S}}_{mic}^c$ (m2 g−1)
Ni/NiAlOX-550	0.74	185.86	85.52	100.35	115.96	102.31	13.66
Ni/NiAlOX-600	0.74	181.75	102.10	79.65	129.55	129.55	—
Ni/NiAlOX-650	0.73	179.29	155.96	23.31	177.95	177.95	—
Ni/NiAlOX-700	0.73	169.44	155.08	14.36	165.33	165.33	—
Ni/NiAlOX-750	0.73	156.02	156.02	—	129.28	129.28	—

^aDetected by ICP-OES. The theoretical Ni/Al molar ratio is 0.73.

^bBET surface area.

^cCalculated by t-plot. All of the samples are tableted at 15 MPa.