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Open AccessArticle

Continuous-Flow Process for Glycerol Conversion to Solketal Using a Brönsted Acid Functionalized Carbon-Based Catalyst

Departamento de Ingeniería Química, Facultad de Ciencias, Universidad de Málaga, Campus Teatinos s/n, E29071 Málaga, Spain
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Catalysts 2019, 9(7), 609; https://doi.org/10.3390/catal9070609
Received: 17 June 2019 / Revised: 3 July 2019 / Accepted: 15 July 2019 / Published: 18 July 2019
(This article belongs to the Special Issue Catalysis for Energy Production)
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 (SO3H-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 °C in a co-solvent free operation. The catalyst maintained its activity under continuous flow even after 300 min of reaction. View Full-Text
Keywords: biofuel additive; monolithic catalyst; brönsted acidity; glycerol valorization; continuous-flow reactor biofuel additive; monolithic catalyst; brönsted acidity; glycerol valorization; continuous-flow reactor
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MDPI and ACS Style

Domínguez-Barroso, V.; Herrera, C.; Larrubia, M.Á.; González-Gil, R.; Cortés-Reyes, M.; Alemany, L.J. Continuous-Flow Process for Glycerol Conversion to Solketal Using a Brönsted Acid Functionalized Carbon-Based Catalyst. Catalysts 2019, 9, 609. https://doi.org/10.3390/catal9070609

AMA Style

Domínguez-Barroso V, Herrera C, Larrubia MÁ, González-Gil R, Cortés-Reyes M, Alemany LJ. Continuous-Flow Process for Glycerol Conversion to Solketal Using a Brönsted Acid Functionalized Carbon-Based Catalyst. Catalysts. 2019; 9(7):609. https://doi.org/10.3390/catal9070609

Chicago/Turabian Style

Domínguez-Barroso, Vanesa; Herrera, Concepción; Larrubia, María Á.; González-Gil, Rafael; Cortés-Reyes, Marina; Alemany, Luis J. 2019. "Continuous-Flow Process for Glycerol Conversion to Solketal Using a Brönsted Acid Functionalized Carbon-Based Catalyst" Catalysts 9, no. 7: 609. https://doi.org/10.3390/catal9070609

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