Glycerol Conversion Catalyzed by Carbons Prepared from Agroindustrial Wastes

Autor:	Thalita S. Galhardo, Wagner Carvalho, Maraisa Gonçalves, Victor C. Souza, F.C.A. Figueiredo, Michelle Mantovani, Dalmo Mandelli
Rok vydání:	2013
Předmět:	General Chemical Engineering chemistry.chemical_element Alcohol General Chemistry Husk Industrial and Manufacturing Engineering Catalysis chemistry.chemical_compound Adsorption chemistry Glycerol Organic chemistry Selectivity Bagasse Carbon
Zdroj:	Industrial & Engineering Chemistry Research. 52:2832-2839
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie303072d
Popis:	Sulfonated carbon-based catalysts were prepared from agroindustrial wastes (sugar cane bagasse, coconut husk, and coffee grounds). These catalysts showed high activity for glycerol etherification with tert-butyl alcohol. Yields of mono-tert-butyl glycerol (MTBG), di-tert-butyl glycerol (DTBG), and tri-tert-butyl-glycerol (TTBG) were higher than that obtained using Amberlyst-15 commercial resin. At 393 K and 5 wt % catalyst loading, glycerol conversion and selectivity to DTBG+TTBG after 4 h reaction time were 80.9% and 21.3%, respectively, with the sugar cane bagasse-based catalyst. Both catalytic activity and selectivity were affected by the presence of water in the reaction medium. However, the flexible and hydrophilic structure of the oxidized carbon allows the adsorption of water without compromising the activity of acid sites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e2e1a3fcbe8a8018532f53825ebe0a8f https://doi.org/10.1021/ie303072d Zobrazit plný text záznamu