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Synthesis of high-grade Jet fuel blending precursors by aldol condensation of lignocellulosic ketones using HfTPA/MCM-41 with strong acids and enhanced stability.
- Source :
-
Applied Catalysis B: Environmental . May2023, Vol. 325, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Upgrading lignocellulosic ketones to Jet fuel precursors by aldol condensation is the key step for the synthesis of high-grade bio-Jet fuels. State-of-art works are confined in pure feedstock used, catalysis sites leaching and coking. Therefore, we synthesized a strong solid acid HfTPA/MCM-41 and used it to catalyze aldol condensation of lignocellulosic ketone mixture to bio-jet fuel blending precursors, where 80 %Hf 1.5 TPA/MCM-41 shows better activity than 80 %HPW/MCM-41 and commercial zeolites with 66.8 % yield of products obtained. The good performance of the catalyst is ascribed to good acid properties, large surface area and especially new strong L acids and good stability based on anti-coking and water tolerance by Hf doping, which changes the electronic structure of the catalyst surface to efficiently activate C O bond of ketones to form a metal enolate intermediate and anchoring HPW from leaching. This work demonstrates an efficient way to synthesize high-performance acid catalyst applied in bio-jet fuel synthesis. [Display omitted] • A good-performance strong solid acid catalyst with new strong L acid and good stability was synthesized. • The good-performance of the catalyst is attributed to the Hf doping. • This catalyst was simply synthesized by combination of equivalent-volume impregnation and co-deposition. • High-performance bio-jet fuel blending precursors were synthesized using lignocellulosic derivatives ketones. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09263373
- Volume :
- 325
- Database :
- Academic Search Index
- Journal :
- Applied Catalysis B: Environmental
- Publication Type :
- Academic Journal
- Accession number :
- 161440241
- Full Text :
- https://doi.org/10.1016/j.apcatb.2022.122330