- 作者: Fey-long Wang and Tan-feng Tsai
- 中文摘要:
Catalytic synthesis of 2,6-dimethylphenol from KA-oil (a mixture of cyclohexanol and cyclohexanone) and methanol was achieved by using magnesium oxide-supported chromium oxide catalysts in one step. At higher conversion ( 90%), dimethylphenol was formed in high yield (60 %).
The activity of Cr/MgO catalysts depended on the concentration of chromium. The yield of 2,6-dimethylphenol was also affected by the composition of the ratio of cyclohexanol to cyclohexanone in KA-oil. Cyclohexanol and cyclohexanone reacting with methanol under the same conditions indicated that pure cyclohexanol or cyclohexanone is less reactive than their mixture, KA-oil. The adsorption properties of cyclohexanol and cyclohexanone on the surface of Cr/MgO determined by FT-IR spectroscopy suggest that cyclohexanone is easily reduced to cyclohexanol by the hydrogen which formed in the reaction, and then further reacted with methanol to form 2,6-dimethyphenol. - 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --