Table 1.

The effect of calcination temperature on the phase composition of NiMoO₄ samples. Calcination time: 6 h, pH = 4.57, and φ = 1.

Temperature (°C)	Phase Composition (wt.%)
	α-NiMoO4	β-NiMoO4	MoO2	MoO3	NiO
300	22.4	22.7	46	1.8	7.1
400	41.9	40.7	0	12.3	5.1
500	19.6	72.8	0	4.1	3.5
600	73.7	23	0	2.2	1
700	90.9	7.4	0	1.4	0.3
900	100	0	0	0	0
1100	100	0	0	0	0