Study of Neat and Mixed Sn(IV) and Mo(VI) Oxides for Transesterification and Esterification: Influence of the Substrate on Leaching

Autor:	Dhara B.A. Pryston, Nívea dos Santos Brainer, Camila Braga Dornelas, Mario R. Meneghetti, Simoni M.P. Meneghetti, Débora Olimpio da Silva Avelino, Thatiane Veríssimo dos Santos
Rok vydání:	2019
Předmět:	inorganic chemicals food.ingredient 010405 organic chemistry Chemistry Ethyl acetate chemistry.chemical_element General Chemistry Transesterification 010402 general chemistry 01 natural sciences Catalysis Soybean oil 0104 chemical sciences chemistry.chemical_compound food Molybdenum Leaching (metallurgy) Methanol Tin Nuclear chemistry
Zdroj:	Catalysis Letters. 149:3132-3137
ISSN:	1572-879X 1011-372X
Popis:	Tin and molybdenum oxide catalytic systems were employed in transesterification and esterification reactions using methanol. In the presence of the molybdenum-based catalysts, low activity was observed in the methanolysis of soybean oil. However, high activity was attained in the case of ethyl acetate transesterification (conversion of 75% at 1 h, using SnMo50 as catalyst) and oleic or propionic acid esterification (conversion of 48% at 1 h, in the case of propionic acid, using SnMo50 as catalyst). This result may be associated with the formation of molybdenum carboxylates that are soluble in more polar media and are responsible for the catalytic activity. These results suggest that the conversions observed with these systems can be related to the formation of homogeneous catalytic complexes, promoting better diffusion of the substrate and the acid sites of these systems.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e1c9a7bbb72d664cd45f926c28da645c https://doi.org/10.1007/s10562-019-02869-6 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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