Liu Xiaoshuan, Yu Dinghua, Wengui Zhang
Mar 30, 2013
Citations
1
Influential Citations
19
Citations
Journal
Applied Catalysis A-general
Abstract
Abstract Cis-3-hexen-1-yl acetate is a significant green note flavor compound and widely used in the food and cosmetic industry. In this research, a series of solid base KOH/γ-Al 2 O 3 have been prepared and been utilized for the synthesis of cis-3-hexen-1-yl acetate via transesterification from cis-3-hexen-1-yl and ethyl acetate. The catalysts were also characterized by several physic-chemical techniques such as X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, N 2 adsorption, CO 2 -temperature-programmed desorption (CO 2 -TPD), and X-ray fluorescence (XRF). 30%KOH/Al 2 O 3 was suggested to be the best conversion due to the cis-3-hexen-1-ol conversion of 59.3% at a temperature 88 °C within 2 h. Characterization results showed that KOH transformed into Al–O–K and K 2 O·CO 2 species during the calcination process. It was confirmed that K 2 O·CO 2 disappeared and Al–O–K groups existed on the surface of the water-washing 30%KOH/Al 2 O 3 which was inactive for transesterification. K 2 O·CO 2 species might be the major active species on KOH/Al 2 O 3 , and Al–O–K groups was inactive for cis-3-hexen-yl acetate synthesis.