Document Detail

Soybean biodiesel methyl esters, free glycerin and acid number quantification by (1) H nuclear magnetic resonance spectroscopy.
MedLine Citation:
PMID:  23225640     Owner:  NLM     Status:  Publisher    
Production of alternative fuels, such as biodiesel, from transesterification of vegetable oil driven by heterogeneous catalysts is a promising alternative to fossil diesel. However, achieving a successful substitution for a new renewable fuel depends on several quality parameters. (1) H NMR spectroscopy was used to determine the amount of methyl esters, free glycerin and acid number in the transesterification of soybean oil with methanol in the presence of hydrotalcite-type catalyst to produce biodiesel. Reaction parameters, such as temperature and time, were used to evaluate soybean oil methyl esters rate conversion. Temperatures of 100 to 180 °C and times of 20 to 240 min were tested on a 1 : 12 molar ratio soybean oil/methanol reaction. At 180 °C/240 min conditions, a rate of 94.5 wt% of methyl esters was obtained, where free glycerin and free fatty acids were not detected. Copyright © 2012 John Wiley & Sons, Ltd.
Natasha Coral; Elizabeth Rodrigues; Victor Rumjanek; José Roberto Zamian; Geraldo Narciso da Rocha Filho; Carlos Emmerson Ferreira da Costa
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-12-7
Journal Detail:
Title:  Magnetic resonance in chemistry : MRC     Volume:  -     ISSN:  1097-458X     ISO Abbreviation:  Magn Reson Chem     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882600     Medline TA:  Magn Reson Chem     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 John Wiley & Sons, Ltd.
LCO, Laboratório de Catálise e Oleoquímica, Faculdade de Química, UFPA, Rua Augusto Corrêa s/n, Guamá, CEP: 66075-110, Belém, Pará, Brazil.
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