%0 Journal Article
%T Continuous-Flow Process for Glycerol Conversion to Solketal Using a Br£¿nsted Acid Functionalized Carbon-Based Catalyst
%J Catalysts | An Open Access Journal from MDPI
%D 2019
%R https://doi.org/10.3390/catal9070609
%X The acetalization of glycerol with acetone represents a strategy for its valorization into solketal as a fuel additive component. Thus, acid carbon-based structured catalyst (SO 3H-C) has been prepared, characterized and tested in this reaction. The structured catalyst (L = 5 cm, d = 1 cm) showed a high surface density of acidic sites (2.9 mmol H + g £¿1) and a high surface area. This catalyst is highly active and stable in the solketal reaction production in a batch reactor system and in a continuous downflow reactor, where several parameters were studied such as the variation of time of reaction, temperature, acetone/glycerol molar ratio (A/G) and weight hourly space velocity (WHSV). A complete glycerol conversion and 100% of solketal selectivity were achieved working in the continuous flow reactor equipped with distillation equipment when WHSV is 2.9 h £¿1, A/G = 8 at 57 ¡ãC in a co-solvent free operation. The catalyst maintained its activity under continuous flow even after 300 min of reaction. View Full-Tex
%U https://www.mdpi.com/2073-4344/9/7/609