Amine-Modulated Lanthanum-Based Metal–Organic Frameworks for Levulinic Acid Conversion to Alkyl Levulinate DOI Creative Commons

Kavya Pradeepan,

Kaiprathu Anjali, Shun Nishimura

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(42), P. 17803 - 17813

Published: Oct. 14, 2024

Lanthanide metal–organic frameworks (Ln-MOFs) have attracted considerable interest in heterogeneous catalysis due to their tunable channel sizes, stable network structures, and diverse active sites. Here, a series of lanthanum (La)-based MOFs were synthesized the presence various amine modulators ethylene diamine (ED), 1,4-diazabicyclo[2.2.2]octane (DABCO), butylamine (BA), triethylamine (TEA), heptylamine (HA) under identical conditions. These play crucial role both nucleation growth processes La-MOFs. The impact these on crystallinity, porosity, acidity, thermal stability, bonding, morphology, oxidation state metal was investigated. Textural analysis confirmed that possess crystalline structures but different morphologies. catalytic performance as-prepared La-MOF catalysts evaluated for levulinic acid (LA) esterification. La-MOF-DABCO exhibited highest yield, producing 92% ethyl levulinate (EL) 2 h at 190 °C. Kinetic parameters indicated an activation energy 20.7 kJ mol–1 reaction order 0.5 with respect LA. Thermodynamic classified as endergonic, nonspontaneous, more ordered. study illuminated influence Brønsted–Lewis sites esterification, highlighting modulator-driven approach MOF synthesis its potential catalysis. findings offer insights modeling simulation studies industrial applications.

Language: Английский

Esterification of levulinic acid over tetravalent metal phosphates: An efficient route to fuel additives DOI Creative Commons
Graça M. S. R. O. Rocha,

Filipe S. Lopes

Catalysis Today, Journal Year: 2024, Volume and Issue: 442, P. 114905 - 114905

Published: June 26, 2024

Layered materials, including tetravalent metal phosphates and phosphonates, have been widely investigated in several fields acting as good, selective catalysts a great number of reactions. In the present work, α- γ-zirconium (α- γ-ZrP) were prepared evaluated esterification reactions levulinic acid (LA) with ethanol (EtOH) or methanol (MeOH) using conventional reflux method (CV) microwave assisted (MW). The best selectivities for ethyl methyl levulinates conversions LA achieved γ-ZrP MW are strongly related properties structure this catalyst used. Two intermediates, 5-ethoxy-5-methyldihydrofuran-2-one also designated by pseudo-ethyl levulinate (pseudo-EL) 5-methoxy-5-methyldihydrofuran-2-one pseudo-methyl (pseudo-ML) formed.

Language: Английский

Citations

5
Heteropolyacid-Assisted Efficient One-Pot Synthesis of Ethyl Levulinate from Biorenewable Feedstocks DOI

Gopika Jagannivasan,

Suja Haridas, Banu Marimuthu

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

Language: Английский

Citations

0
Cerium (III) Antimony phosphomolybdate: Heterogeneous catalyst in the Esterification Reaction DOI
Poonam Rani, Nadeem Sharma, Harish Kumar Sharma

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(11)

Published: March 1, 2025

Abstract In the present article, we have synthesized a heteropoly acid salt named Cerium antimonophosphomolybdate (CeSbPMo), an inorganic compound with characteristics and ion exchange capacity of 3.2 ± 0.2 meq/g. The catalyst after synthesis, characterized through variety methods, including FTIR, X‐ray diffraction crystallography, SEM/EDS TGA. N 2 adsorption analysis provided information about catalyst's surface area distribution pore sizes in catalyst, indicating its potential for high catalytic activity. An esterification reaction between fatty acids alcohol was catalyzed using prepared compound. Catalytic efficiency explored different ranges from 3 wt% to 20 wt%, displayed remarkable performance even just wt%. results demonstrated that CeSbPMo (heteropoly salt), effectively promoted palmitic stearic on reacting methanol at 100 °C 130 °C. impact ratio also studied both acids.

Language: Английский

Citations

0
Synthesis of fuel bioadditives alkyl levulinates from the esterification of biomass-derived levulinic acid catalyzed by Bronsted acid-functionalized UiO-66-NH2 DOI

Mahdiyeh‐Sadat Hosseini,

Alireza Abbasi, Majid Masteri‐Farahani

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2025, Volume and Issue: unknown, P. 136651 - 136651

Published: March 1, 2025

Language: Английский

Citations

0
Engineered covalent organic frameworks (COFs) for adsorption-based metal separation technologies: A critical review DOI
Brij Mohan, Muhammad Bilal Asif, Rakesh Kumar Gupta

et al.

Advances in Colloid and Interface Science, Journal Year: 2025, Volume and Issue: unknown, P. 103507 - 103507

Published: April 1, 2025

Language: Английский

Citations

0
Preparation of 12-Tungstophosphoric Acid Embedded in a Silica Matrix and Its Effect on the Activity of 1-Propanol Dehydration DOI Creative Commons

Eduardo de Souza Mello Falcão,

Deborah da Silva Valadares, Giovana Magalhães dos Santos

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: April 14, 2025

Language: Английский

Citations

0
Amine-Modulated Lanthanum-Based Metal–Organic Frameworks for Levulinic Acid Conversion to Alkyl Levulinate DOI Creative Commons

Kavya Pradeepan,

Kaiprathu Anjali, Shun Nishimura

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(42), P. 17803 - 17813

Published: Oct. 14, 2024

Lanthanide metal–organic frameworks (Ln-MOFs) have attracted considerable interest in heterogeneous catalysis due to their tunable channel sizes, stable network structures, and diverse active sites. Here, a series of lanthanum (La)-based MOFs were synthesized the presence various amine modulators ethylene diamine (ED), 1,4-diazabicyclo[2.2.2]octane (DABCO), butylamine (BA), triethylamine (TEA), heptylamine (HA) under identical conditions. These play crucial role both nucleation growth processes La-MOFs. The impact these on crystallinity, porosity, acidity, thermal stability, bonding, morphology, oxidation state metal was investigated. Textural analysis confirmed that possess crystalline structures but different morphologies. catalytic performance as-prepared La-MOF catalysts evaluated for levulinic acid (LA) esterification. La-MOF-DABCO exhibited highest yield, producing 92% ethyl levulinate (EL) 2 h at 190 °C. Kinetic parameters indicated an activation energy 20.7 kJ mol–1 reaction order 0.5 with respect LA. Thermodynamic classified as endergonic, nonspontaneous, more ordered. study illuminated influence Brønsted–Lewis sites esterification, highlighting modulator-driven approach MOF synthesis its potential catalysis. findings offer insights modeling simulation studies industrial applications.

Language: Английский

Citations

2