the production of thymoquinone from thymol and carvacrol

LIST OF TABLES
Table Page
Table 2.1. Catalytic zeolites ……………..................................................................... 6
Table 3.1. Electronic configuration of the free atoms of the first row transition
elements…………………………………………………………………... 13
Table 3.2. Known oxidation numbers of first row transition elements ……………… 14
Table 4.1. Data on heterogeneous catalysts used in oxidation reactions...................... 22
Table 5.1. Chemical composition of the essential oils (% total peak area)………...... 26
Table 5.2. Data on heterogeneous and homogeneous catalysts used in monoterpene
and essential oil oxidation reaction……………………………………….. 28
Table 7.1 Metal content of encapsulated catalysts ……………………………..…… 38
Table 7.2. IR spectral data of ligand, its neat and encapsulated complexes…………. 46
Table 7.3. Surface area and micropore volume analysis …………………………….. 47
Table 7.4. Total amount of weight loss up to 800 o C for NaY, CrNaY, Cr(salpn)-
NaY ............................................................................................................. 48
Table 7.5. Percentage decomposition of hydrogen peroxide after 1 and 2 h of
contact time at ambient temperature……………………………………… 50
Table 7.6. Conversion and yield in the oxidation of carvacrol reactions…. ……........ 53
Table 7.7. Values of parameters …………………………………………………....... 61
Table 7.8. Oxidation of carvacrol by Cr (salpn)- NaY catalyst under different
reaction conditions....................................................................................... 63
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