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)29(H2O). pdf number = 01-076-0540, admontite, MgO(B2O3)37(H2O). pdf number = 01-073-0638, MgB6O7(OH)63(H2O).