Korean Chemical Engineering Research

  • 제53권4호
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  • Pages.463-467
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  • 2015
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  • 0304-128X(pISSN)
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  • 2233-9558(eISSN)
한국화학공학회 (The Korean Institute of Chemical Engineers)
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The Nature of Acid-Catalyzed Acetalization Reaction of 1,2-Propylene Glycol and Acetaldehyde

  • Cheng, Chen (School of Chemistry & Chemical Engineering, Tianjin University of Technology) ;
  • Chen, Hui (School of Chemistry & Chemical Engineering, Tianjin University of Technology) ;
  • Li, Xia (School of Chemistry & Chemical Engineering, Tianjin University of Technology) ;
  • Hu, Jianli (School of Chemistry & Chemical Engineering, Tianjin University of Technology) ;
  • Liang, Baochen (School of Chemistry & Chemical Engineering, Tianjin University of Technology)
  • 투고 : 2014.09.11
  • 심사 : 2014.12.30
  • 발행 : 2015.08.01
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초록

We investigated catalytic activity of ion-exchange resins in acetalization of 1,2-propylene glycol with acetaldehyde. The impacts of reaction variables, such as temperature, reaction time, catalyst loading and feedstock composition, on the conversion of 1,2-propylene glycol were measured. The life of the catalyst was also studied. Furthermore, the reaction kinetics of 1,2-propylene glycol acetalization was studied. It was found that reaction rate followed the first-order kinetics to acetaldehyde and 1,2-propylene glycol, respectively. Therefore, overall acetalization reaction should follow the second-order reaction kinetics, expressed as. Key words: 1,2-propylene Glycol, 2,4-dimethyl-1,3-dioxolane, Ion-exchange Resin, Polyhydroxy Compounds, Acetalization $r=kC^{nA}_AC^{nB}_B=19.74e^{\frac{-6650}{T}}C^1_AC^1_B$.

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참고문헌

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