화학공학소재연구정보센터
Chemical Engineering Journal, Vol.307, 828-835, 2017
SnF2-catalyzed glycerol ketalization: A friendly environmentally process to synthesize solketal at room temperature over on solid and reusable Lewis acid
Solid SnF2 was able to catalyze the glycerol ketalization with propanone giving solketal (i.e. 2,2-dimethyl-1,3-dioxolane-4-methanol) in reactions with high conversions and regioselectivity (ca. 97%). Tin(II) fluoride is commercially available, water tolerant and less corrosive solid Lewis acid catalyst. Herein, we have described an alternative process to the Bronsted acid-catalyzed reactions in homogeneous phase, where the product neutralization steps are avoided, and the catalyst is easily recovered and reused without loss activity. In addition to develop a catalytic system, the process engineering including the definition of basic equipment for economic evaluation was too investigated. A process flow diagram (PFD) was developed to generate the most favorable operating conditions for solketal production through SnF2-catalyzed glycerol condensation with propanone. We used the UNISim (TM) software to perform the material and energy balances. The plant could work with 432 t/y of glycerol and could produce 620.9 t/y of solketal. The solketal cost was 12.29 $ (USD)/kg. This analysis suggests that solketal production from glycerol deserves serious consideration by the'investors. (C) 2016 Elsevier B.V. All rights reserved.