UPM Institutional Repository

Selective synthesis of renewable bio-jet fuel precursors from furfural and 2-butanone via heterogeneously catalyzed aldol condensation


Citation

Chottiratanachote, Atikhun and Suttipong, Manaswee and Rashid, Umer and Parasuk, Vudhichai and Kondo, Junko Nomura and Yokoi, Toshiyuki and Alsalme, Ali and Ngamcharussrivichai, Chawalit (2023) Selective synthesis of renewable bio-jet fuel precursors from furfural and 2-butanone via heterogeneously catalyzed aldol condensation. Catalysts, 13 (2). art. no. 242. pp. 1-18. ISSN 2073-4344

Abstract

This study aims to synthesize α,β-unsaturated carbonyl compounds with branched structures via aldol condensation of furfural and 2-butanone using magnesium–aluminum (MgAl) mixed oxides as heterogeneous acid–base catalysts. Regarding the molecular structure of 2-butanone, there are two possible enolate ions generated by subtracting the α-hydrogen atoms at the methyl or methylene groups of 2-butanone. The branched-chain C9 products, derived from the methylene enolate ion, can be applied as bio-jet fuel precursors. The most suitable catalyst, contributing the highest furfural conversion (63%) and selectivity of the branched-chain C9 products (77%), is LDO3, the mixed oxides with 3:1 Mg:Al atomic ratio, with a high surface area and a large number of medium basic sites. The suitable reaction conditions to produce the branched-chain C9 ketones are 1:5 furfural:2-butanone molar ratio, 5 wt.% catalyst loading, 120 °C reaction temperature, and 8 h reaction time. Additionally, this study investigates the adsorption of 2-butanone onto a mixed oxide using in situ Fourier transform infrared spectroscopy; the results of which suggest that the methylene enolate of 2-butanone is the likely dominant surface intermediate at elevated temperatures. Accordingly, the calculation, based on density functional theory, indicates that the methylene enolate ion of 2-butanone is the kinetically favorable intermediate on an MgO(100) as a model oxide surface.


Download File

Full text not available from this repository.
Official URL or Download Paper: https://www.mdpi.com/2073-4344/13/2/242

Additional Metadata

Item Type: Article
Divisions: Institute of Advanced Technology
DOI Number: https://doi.org/10.3390/catal13020242
Publisher: Multidisciplinary Digital Publishing Institute
Keywords: Layered double hydroxides; Furfural; 2-Butanone; Aldol condensation; Acid–base properties
Depositing User: Ms. Nur Faseha Mohd Kadim
Date Deposited: 19 Aug 2024 04:03
Last Modified: 19 Aug 2024 04:03
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/catal13020242
URI: http://psasir.upm.edu.my/id/eprint/109273
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item