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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Copper and lanthanum mixed oxides as catalysts for ethanol Guerbet coupling: The role of La3+ on the production of long-chain alcohols

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Author(s):
Perrone, Olavo Micali [1] ; Siqueira, Marcos Rechi [1] ; Metzker, Gustavo [1] ; de Oliveira Lisboa, Daniela Correa [1] ; Boscolo, Mauricio [1]
Total Authors: 5
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Biosci Humanities & Exact Sci, Sao Jose Do Rio Preto - Brazil
Total Affiliations: 1
Document type: Journal article
Source: ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY; v. 40, n. 2 MAR 2021.
Web of Science Citations: 0
Abstract

Mixed oxides derived from the calcination of modified hydrotalcites precursors with copper and lanthanum were synthetized by the co-precipitation method and characterized and applied as catalysts for ethanol Guerbet coupling reactions. The oxides obtained were used to convert ethanol into 1-butanol and long-chain alcohols, mostly 1-hexanol. The selectivity for 1-butanol and 1-hexanol reached 62% and 10% for Cu-MgAl(O) at 280 degrees C. The addition of 1 mol% of La3+ (CuLa-MgAl(O)) increased the number of basic sites comparing to Cu-MgAl(O) changing the selectivity for 1-butanol and 1-hexanol reaching 16.70 and 41.7% at 280 degrees C. The addition of lanthanum and consequently the increase on the catalyst basicity was related to the obtainment of long-chain alcohols due to the enolate formation during the aldol condensation of Guerbet coupling. (AU)

FAPESP's process: 16/15575-7 - Synthesis of organic carbonates from CO2 and ethanol-Guerbet compounds catalyzed by Cu-hydrotalcites modified with Ag+, Ni2+, Fe3+, La3+ or Nb5+.
Grantee:Olavo Micali Perrone
Support Opportunities: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 17/13230-5 - Partial ethanol reforming: stability and selectivity of mix metal amphoteric oxides as catalysts for atmospheric pressure flow reaction
Grantee:Mauricio Boscolo
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
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