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Vieira JC, Moreira AFS, Anjos RD, de Lima AL, Lachter ER, Muchave GG, Mota CJA. Acid-Catalyzed Esterification of Macauba Pulp ( Acrocomia aculeata) and Brazil Nut ( Bertholletia excelsa) Oils of High Acid Values over Mesoporous Silica Functionalized with Propyl Sulfonic Acid. ACS OMEGA 2025; 10:13685-13693. [PMID: 40224424 PMCID: PMC11983335 DOI: 10.1021/acsomega.5c01099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2025] [Revised: 03/13/2025] [Accepted: 03/18/2025] [Indexed: 04/15/2025]
Abstract
Low-value vegetable oils of Macauba pulp (Acrocomia aculeata) and Brazil nut (Bertholletia excelsa) were esterified with methanol under heterogeneous acid catalysis conditions. The characterization of the raw vegetable oils revealed high free fatty acid and moisture content. The heterogeneous acid catalysts were prepared by co-condensation upon the grafting of propylsulfonic acid on MCM-41 (Pr-HSO3/MCM-41) and SBA-15 (Pr-HSO3/SBA-15) mesoporous silica materials. The catalysts were used in the esterification of the Macauba (Acrocomia aculeata) and Brazil nut (Bertholletia excelsa) oils. The yield of methyl esters reached up to 96%. The catalysts were easily recovered and tested for reuse. The catalyst grafted on the MCM-41 silica showed faster deactivation than the catalyst grafted on SBA-15, due to more severe leaching of the active phase. The results obtained during the esterification of the Macauba and Brazil nut oils indicated that the catalysts could be promising materials for producing biodiesel from raw materials containing high-acidity values.
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Affiliation(s)
- José
Sebastião C. Vieira
- Escola de
Química, Universidade Federal do
Rio de Janeiro, Rio de Janeiro. Av Athos da Silveira Ramos, 149, CT, Bloco E, Rio de Janeiro 21941-909, Brazil
- Departamento
de Desenvolvimento de Ensino, Instituto
Federal do Maranhão − Campus Zé Doca, Zé Doca, MA 65365-000, Brazil
- Instituto
Federal do Maranhão, Campus São José de Ribamar, Rodovia MA 201. S/N-Vila Piçarreira, São José de Ribamar, MA 65110-000, Brazil
| | - Anderson F. S. Moreira
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Rio
de Janeiro. Av Athos da Silveira Ramos, 149, CeT, Bloco A, Rio de Janeiro 21941-909, Brazil
| | - Ricardo D. Anjos
- Departamento
de Desenvolvimento de Ensino, Instituto
Federal do Maranhão − Campus Zé Doca, Zé Doca, MA 65365-000, Brazil
| | - Ana Lúcia de Lima
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Rio
de Janeiro. Av Athos da Silveira Ramos, 149, CeT, Bloco A, Rio de Janeiro 21941-909, Brazil
| | - Elizabeth R. Lachter
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Rio
de Janeiro. Av Athos da Silveira Ramos, 149, CeT, Bloco A, Rio de Janeiro 21941-909, Brazil
| | - Germildo G. Muchave
- Escola de
Química, Universidade Federal do
Rio de Janeiro, Rio de Janeiro. Av Athos da Silveira Ramos, 149, CT, Bloco E, Rio de Janeiro 21941-909, Brazil
- WUTIVI University
(UniTiva), Av. Da Namaacha,
n°188, Belo − Horizonte, Boane, Maputo 1415, Mozambique
| | - Claudio J. A. Mota
- Escola de
Química, Universidade Federal do
Rio de Janeiro, Rio de Janeiro. Av Athos da Silveira Ramos, 149, CT, Bloco E, Rio de Janeiro 21941-909, Brazil
- Instituto
de Química, Universidade Federal
do Rio de Janeiro, Rio
de Janeiro. Av Athos da Silveira Ramos, 149, CeT, Bloco A, Rio de Janeiro 21941-909, Brazil
- INCT Energia
e Ambiente, UFRJ, Rio de Janeiro 21941-909, Brazil
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Manera C, Perondi D, Dotto GL, Barcellos T, Godinho M. Study of mayenite produced from waste eggshell as support for Ni–Co catalysts for biomass tar cracking. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.09.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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