the production of thymoquinone from thymol and carvacrol
the production of thymoquinone from thymol and carvacrol
the production of thymoquinone from thymol and carvacrol
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<strong>carvacrol</strong> conversion (%)<br />
16<br />
14<br />
12<br />
10<br />
8<br />
6<br />
4<br />
2<br />
0<br />
0 100 200 300 400 500<br />
time (min.)<br />
Bi(salpn) Y catalyst<br />
Ni(salpn) Y catalyst<br />
Zn(salpn) Y catalyst<br />
Fe(salpn) Y catalyst<br />
Cr(salpn) Y catalyst<br />
Figure 7.8. The percentage <strong>of</strong> <strong>carvacrol</strong> conversion (reaction conditions: <strong>carvacrol</strong>/H2O2<br />
<strong>carvacrol</strong> conversion (%)<br />
35<br />
30<br />
25<br />
20<br />
15<br />
10<br />
5<br />
molar ratio=3, 0.1 g catalyst, 60 ºC)<br />
0<br />
0 100 200 300 400 500<br />
time (min.)<br />
Bi(salpn) Y catalyst<br />
Ni(salpn) Y catalyst<br />
Zn(salpn) Y catalyst<br />
Fe(salpn) Y catalyst<br />
Cr(salpn) Y catalyst<br />
Figure 7.9. The percentage <strong>of</strong> <strong>carvacrol</strong> conversion (reaction conditions: <strong>carvacrol</strong>/H2O2<br />
molar ratio=1, 0.1 g catalyst, 60 ºC)<br />
54