4 years ago

Solid-Acid-Catalyzed Etherification of Glycerol to Potential Fuel Additives

Solid-Acid-Catalyzed Etherification of Glycerol to Potential Fuel Additives
Subhash Magar, Sumit Kumar Jana, Sumit Kamble, Chandrashekhar Rode, Govindraj Thangaraj Mohanraj
Various acidic clay catalysts have been explored for the glycerol and tert-butyl alcohol (TBA) reaction. Complete conversion of glycerol could be achieved over a montmorillonite KSF/O (mont-KSF/O) clay catalyst to form a product mixture containing mono-, di-, and tri-tert-butyl glycerol ethers. The different variables, such as the reaction time, reaction temperature, catalyst loading, and molar ratio of glycerol/TBA, were investigated in detail. X-ray diffraction, thermogravimetric analysis, temperature-programmed desorption of ammonia (NH3-TPD), and Brunauer–Emmett–Teller surface area measurements were performed for characterization of the evaluated catalyst. NH3-TPD revealed that mont-KSF/O possessed the highest acidity, leading to the highest activity for etherification of glycerol. mont-KSF/O could be successfully recycled several times without losing its activity.

Publisher URL: http://dx.doi.org/10.1021/acs.energyfuels.7b02213

DOI: 10.1021/acs.energyfuels.7b02213

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