Production of Pure Hydrogen through Thermocatalytic Methane Decomposition Using NiO-MgO Catalysts Promoted by Chromium and Copper Prepared via Mechanochemical Method

Table 1

Physicochemical properties of the calcined catalysts.

Sample	(m^2·g^-1)	Pore volume (cm^3·g^-1)	Pore size (nm)	Particle size (nm)	Average crystal size (nm)
50NiO-MgO	15.9	0.056	14.34	56.5	40.3
50NiO-MgO-5CuO	11.1	0.032	11.50	79.8	21.0
50NiO-MgO-10CuO	10.3	0.037	14.74	86.1	24.1
50NiO-MgO-15CuO	12.6	0.041	13.06	70.4	28.5
50NiO-MgO-5Cr2O3	21.0	0.070	13.49	42.8	29.9
50NiO-MgO-10Cr2O3	27.9	0.104	15.02	32.6	22.1
50NiO-MgO-15Cr2O3	38.3	0.147	15.36	24.1	17.8