화학공학소재연구정보센터
Applied Catalysis A: General, Vol.435, 43-50, 2012
Liquid phase acetoxylation of alpha-pinene over Amberlyst-70 ion-exchange resin
Heterogeneously-catalyzed and solvent-catalyzed liquid phase acetoxylation of alpha-pinene with acetic acid acting as both a solvent and a reagent was studied. Both solvent-catalyzed and catalytic experiments were carried out and various reaction conditions were studied. The influence of temperature, pressure, solvent and gas milieu were taken into account. Bornyl, fenchyl, verbenyl as well as alpha-terpinyl acetates, limonene, camphene and gamma-terpinene were found among reaction products. The addition of the catalyst allowed for maximization of the yield of bornyl acetate. The predominant products obtained were alpha-terpinyl, verbenyl and bornyl acetates. The reaction pathways were identified and evaluated. The aim of this work was to study the feasibility of batch acetoxylation of a-pinene. The analysis of the complex product distribution is not trivial and, consequently, resolving the reaction network was important. The optimized reaction conditions were searched for aiming at an efficient conversion of alpha-pinene to a mixture of valuable products. (c) 2012 Elsevier B.V. All rights reserved.