Abstract
Phenol hydroxylation with aqueous H2O2 was known as one of the most effective manufactures in the world. With Fe-Cu or Fe-Cu/Al2O3 metallic acid salts as catalyst and in gradientless reactor, phenol hydroxylation reaction kinetics process was investigated by changing the factors of reaction temperature, phenol/H2O2 molar ratio and phenol initial mass fraction. It was shown that under the same value of M/FA0(M-the mass of catalyst; FA0-the mass flow rate of critical component A of reactant at the inlet of reactor), phenol conversion was increased but dihydroxybenzene total selectivity went down with the temperature rise, H2O2/phenol molar ratio and phenol initial mass fraction increasing. Therefore, the reaction mechanism of phenol/H2O2 hydroxylation over Fe-Cu or Fe-Cu/Al2O3 was purposed, its reaction kinetics equation and the relative kinetics parameters were also calculated.
Original language | English |
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Pages (from-to) | 87-92 |
Number of pages | 6 |
Journal | Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) |
Volume | 22 |
Issue number | 2 |
State | Published - Apr 2006 |
Keywords
- Fe-Cu catalyst
- Hydroxylation
- Phenol
- Reaction kinetics
- Reaction mechanism