Title: Catalytic synthesis of cyclohexanone ethylene ketal by polyaniline doped with sodium hydrogen sulfate
Abstract: Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene glycol as starting materials using polyaniline(PAn) doped with 20%(mass fraction) of sodium hydrogen sulfate(PAn-NaHSO4) as catalyst.Catalytic activity of PAn-NaHSO4 was investigated.Effect of factors such as mole ratio of ethylene glycol to cyclohexanone,dosage of the catalyst,reaction time,dosage of water stripping agent on product yield were examined systematically and optimum reaction conditions were identified by orthogonal designed experiment.Under optimal conditions:based on amount of cyclohexanone 0.1 mol,mole ratio n(ethylene glycol)∶ n(cyclohexanone)=1.6∶ 1,mass fraction of PAn-NaHSO4 1.2% of the total reactants,water stripping agent cyclohexane 9 mL and reaction time 2.5 h,yield of the product achieves 96.79%.The product was identified as cyclohexanone ethylene ketal by IR and GC-MS.Purity of product achieves 99.0%.After reusing the catalyst for 5 times,yield of the product is still higher than 90.0%.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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