Characterization and Thermal Dehydration Kinetics of Highly Crystalline Mcallisterite, Synthesized at Low Temperatures

Table 1

XRD results of the synthesized magnesium borate minerals.

Reaction temperature (°C)	Reaction time (min)	XRD scores of
		01-070-1902	01-076-0540	01-073-0638
0	30	78	30	—
	60	80	—	—
	120	84	25	—
	240	76	45	—
10	30	72	—	—
	60	8	6	—
	120	69	61	—
	240	76	45	—
20	30	85	31	—
	60	77	51	—
	120	—	71	—
	240	—	73	—
30	30	77	70	—
	60	84	71	—
	120	50	79	—
	240	—	81	—
40	30	52	81	—
	60	29	80	—
	120	39	80	—
	240	—	81	—
50	30	66	78	—
	60	86	59	—
	120	88	52	—
	240	45	79	—
60	30	84	—	—
	60	89	16	—
	120	85	63	—
	240	82	82	—
70	30	87	18	—
	60	85	—	—
	120	85	56	—
	240	57	84	23

pdf number = 01-070-1902, mcallisterite, Mg₂(B₆O₇(OH)₆)₂⋅9(H₂O).
pdf number = 01-076-0540, admontite, MgO(B₂O₃)₃⋅7(H₂O).
pdf number = 01-073-0638, MgB₆O₇(OH)₆⋅3(H₂O).