Open AccessStudy of zinc hydroxy acetate as catalyst in the esterification reaction of fatty acids
Author(s) -
Deborath M. Reinoso,
María B. Fernández,
Daniel E. Damiani,
Gabriela Marta Tonetto
Publication year - 2011
Publication title -
international journal of low-carbon technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 26
eISSN - 1748-1325
pISSN - 1748-1317
DOI - 10.1093/ijlct/ctr040
Subject(s) - catalysis , zinc , chemistry , methanol , molar ratio , yield (engineering) , biodiesel , salt (chemistry) , nuclear chemistry , biodiesel production , fatty acid methyl ester , oleic acid , zinc nitrate , organic chemistry , inorganic chemistry , materials science , metallurgy , biochemistry
In this work, the esterification of oleic acid (OA) with methanol (MOH) using layered heterogeneous catalysts under various reaction conditions to produce biodiesel was studied. The zinc hydroxy nitrate salt Zn 5 (OH) 8 (NO 3 ) 2 · 2H 2 O (abbreviated Zn-N) and zinc hydroxy acetate Zn 5 (OH) 8 (CH 3 COO) 2 · 4H 2 O (abbreviated Zn-A), which have a layered structure, were synthesized (chemical precipitation) and characterized. Tests for the selection of reaction conditions that maximize the yield to methyl esters were performed. The variables considered were temperature, OA:MOH molar ratio and catalyst loading, selecting the study intervals within the range of feasible operating conditions for the catalysts. The layered solid Zn-A was seen to be more active than Zn-N for the esterification of OA. When working at 140°C, 1:30 OA:MOH molar ratio and catalyst loading of 3% w/w, conversions of 87.0 and 73.4% were obtained for Zn-A and Zn-N, respectively. Copyright , Oxford University Press.
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