aproveitamento de resÍduo de biodiesel para preparaÇÃo de carvÕes Ácidos com elevada atividade catalÍtica na reaÇÃo de eterificaÇÃo do glicerol
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ID: 219804
2015
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Abstract
Environmentally friendly acid carbon (CG) catalysts, containing a high amount of sulfonated and oxygenated groups, were prepared from glycerin, a biodiesel waste. CGs were produced by glycerin carbonization in the presence of H2SO4 at 1:3 m:m ratio in a closed autoclave at 180ºC for different times: 0.25; 1; 3 and 6 hours (CG-0.25h; CG-1h; CG-3h and CG-6h, respectively). The catalyst properties for all carbons were evaluated in the glycerol etherification reaction with tert-butyl alcohol (TBA). The yield for mono-tert-butyl glycerol (MTBG), di-tert-butyl glycerol (DTBG) and tri-tert-butyl-glycerol (TTBG) was high and very similar for all CGs, of about 43% and 20% for the MTBG and DTBG + TTBG, respectively. Furthermore, the activity of these catalysts were close to those obtained using a commercial resin, Amberlyst-15, of about 50% and 27% for MTBG and DTBG + TTBG, respectively.
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mantovani2015qumicaaproveitamento
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| Authors | ;Michelle Mantovani;Erik Moda Aguiar;Wagner Alves Carvalho;Dalmo Mandelli;Maraisa Gonçalves |
| Journal | greece and rome |
| Year | 2015 |
| DOI |
10.5935/0100-4042.20150023
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