Effect of lanthanide ion doping on Mg-Al mixed oxides as active acid-base catalysts for fatty acid ethyl ester synthesis

Author(s)

Rossi, Jessika de Souza ^[1] ; Perrone, Olavo Micali ^[1] ; Siqueira, Marcos Rechi ^[1] ; Volanti, Diogo Paschoalini ^[1] ; Gomes, Eleni ^[1] ; Da-Silva, Roberto ^[1] ; Boscolo, Mauricio ^[1]

Affiliation

^[1] Sao Paulo State Univ UNESP, Inst Biosci Humanities & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil

• Document type: Journal article
• Source: RENEWABLE ENERGY; v. 133, p. 367-372, APR 2019.
• Web of Science Citations: 2

Abstract

MgAl-hydrotalcites (HT) containing 1-2% of the lanthanide ions La3+, Ce3+ and Lu3+ were evaluated as heterogeneous catalysts in the transesterification process for fatty acid ethyl ester (FREE) synthesis in order to understand the effect of the high ionic-radii of these metals in the material structure and their catalytic activity. The addition of lanthanides to the catalysts resulted in a decrease of the thermal degradation temperature as well as the specific surface, but, on the other hand, it increases the basicity, crystallinity, and improve the yield in biodiesel production. In general, MMOs with 1% of lanthanides showed higher yields than those with 2%, and the oxide with 1% of Lu3+ reached the best catalytic result for ethanol biodiesel production (84%), about 4.5 times greater than the reference material. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• FAPESP's process: 14/20504-6 - Influence of rare earth elements in the catalytic properties of hydrotalcites and their oxides for ethyl biodiesel production
• Grantee: Jessika de Souza Rossi
• Support Opportunities: Scholarships in Brazil - Master
• FAPESP's process: 15/11588-4 - Hydrotalcites containing Ag, Cu, Ni, Fe, La or Nb as catalysts for dehydrogenation of ethanol and hydrogenation of sugar cane bagasse
• Grantee: Olavo Micali Perrone
• Support Opportunities: Scholarships in Brazil - Doctorate