Highly selective 1-butanol obtained from ethanol catalyzed by mixed metal oxides: Reaction optimization and catalyst structure behavior

Author(s)

Siqueira, Marcos Rechi ^[1] ; Perrone, Olavo Micali ^[1] ; Metzker, Gustavo ^[1] ; de Oliveira Lisboa, Daniela Correa ^[1] ; Thomeo, Joao Claudio ^[1] ; Boscolo, Mauricio ^[1]

Affiliation

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

• Document type: Journal article
• Source: MOLECULAR CATALYSIS; v. 476, OCT 2019.
• Web of Science Citations: 0

Abstract

Synthesis and characterization of a copper mixed metal oxide obtained from hydrotalcite precursor as well as catalytic runs for ethanol conversion to 1-butanol are described. Applying the surface response model, the reaction was optimized reaching an ethanol conversion of 79.6% into gaseous phase (69% of yield) and condensed phase (31% of yield) products using a batch reactor at 350 degrees C for 5 h. The main product of the condensed phase was 1-butanol with 25.4% yield and 32% selectivity, these results being among the higher ones reported for this reaction in the literature. Recycling catalyst experiments demonstrated that, for at least four cycles, the ethanol conversion remains almost constant but the 1-butanol yield and selectivity both decreased. XRD, EPR, surface area measurements and acidity/basicity experiments carried out after the first and fourth catalyst recycling cycles show major modifications in the initial mixed metal oxide structure and copper oxidation state indicating that the active catalytic species increases during the first catalytic run. (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: 92/03515-3 - Synthesis, characterization and thermal reactivity and photochemistry of ruthenium complexes: implications in catalysis, chemotherapy and photodynamic therapy
• Grantee: Douglas Wagner Franco
• Support Opportunities: Research Projects - Thematic 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
• FAPESP's process: 13/23886-4 - Study on selectivity of hydrogenolysis / reductive hydrogenation processes of sugarcane bagasse under supercritical state catalyzed by structured metal oxides
• Grantee: Mauricio Boscolo
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants