2025-01-27 ワシントン州立大学 (WSU)
＜関連情報＞
- https://news.wsu.edu/news/2025/01/27/researchers-discover-new-way-to-store-hydrogen-using-lignin-jet-fuel/
- https://www.sciencedirect.com/science/article/pii/S0360319924052807
- https://tiisys.com/blog/2024/09/27/post-145201/
- https://www.sciencedirect.com/science/article/abs/pii/S0016236122008985
リグニンベースのジェット燃料のin-situ脱水素： 新規かつ持続可能な液体有機水素キャリア In-situ dehydrogenation of lignin-based jet fuel: A novel and sustainable liquid organic hydrogen carrier
Andrew S. Lipton, Terak Ibrahim, William Schwartz, Rafal Gieleciak, Dequan Xiao, Bin Yang
International Journal of Hydrogen Energy Available online: 14 December 2024
DOI:https://doi.org/10.1016/j.ijhydene.2024.12.082
Graphical abstract
Highlights
- A Lignin Jet Fuel-Based Liquid Organic Hydrogen Carrier (LJF-HyC) was developed.
- In-situ dehydrogenation with Pt/zeolite increased aromatic carbon formation.
- LJF-HyC contents unsaturated species such as alkylbenzenes, tetralins, naphthalenes.
- LJF-HyC constituted approximately 18.5 wt% of the dehydrogenated LJF composition.
Abstract
A new and sustainable liquid organic hydrogen carrier, Lignin Jet Fuel-based Liquid Organic Hydrogen Carrier (LJF-HyC), has been discovered. This innovative LOHC is created from Lignin Jet Fuel (LJF) through dehydrogenation reactions. The process was carried out in situ using platinum nanoparticles supported on zeolite, resulting in a significant increase in aromatic carbon content. This increase indicates the successful formation of aromatic rings via C–H dissociation. In-situ Nuclear Magnetic Resonance (NMR) and gas chromatographic analyses revealed the formation of unsaturated and partially unsaturated compounds, including alkylbenzenes, tetralins, naphthalenes with double bond equivalence of 4–8, from six apparent reaction pathways, four of which can be major. The original LJF, consisting primarily of mono-, di-, and tricyclohexylalkanes (96 wt%), was converted to dehydrogenated products, constituting approximately 18.5 wt% of the LJF composition. These findings pave the way for developing sustainable hydrogen carriers derived from sustainable aviation fuels.
リグニンベースのジェット燃料と従来のジェット燃料との混合効果 Lignin-based jet fuel and its blending effect with conventional jet fuel
Zhibin Yang, Zhangyang Xu, Maoqi Feng, John R. Cort, Rafal Gieleciak, Joshua Heyne, Bin Yang
Fuel Available online 15 April 2022
DOI:https://doi.org/10.1016/j.fuel.2022.124040
Highlights
- A new LJF is reported primarily composed of C6-C18 mono-, di-, and tri-cycloalkanes.
- The LJF exhibited complementary material compatibility to existing
- Bulk properties of LJF 10% blend with a conventional fuel are reported.
- LJF 10 vol% blend meets the ASTM D7566 Table 1 required properties.
- Removal of any C17+ carbon molecules by distillation would achieve higher blend ratios.
Abstract
Sustainable aviation fuels (SAFs) must demonstrate specific physical and chemical properties as well as material compatibility (i.e., seal swell) to be used as aviation turbine fuels. Several alternative jet fuels incorporated in ASTM D7566 are comprised mainly of n/iso-alkanes and can only be blended up to 50 vol% due to material compatibility and density issues. Prior work illustrated the ability of cycloalkanes to replace the swelling potential of aromatics required for material compatibility. Here, we report the first archival documentation of a feedstock and chemical process to yield a product composition that could complement 5 existing SAF ASTM D7566 annexes. A lignin-based jet fuel (LJF) blend component is generated and composed of mostly C6–C18 mono, di, and tri-cycloalkanes. The neat LJF was blended with conventional jet fuel at 10 vol% (LJF blend) to simulate a potential qualification goal. Fuel properties critical to engine operability (ATSM D4054 Tier 3 & 4) were either predicted or experimentally tested based on the volume availability. All LJF-blended operability properties fall within the experience range of conventional jet fuel, with neat o-ring swelling exceeding the typical range of conventional fuels. These results support the potential use of this LJF pathway to complement other SAF pathways and achieve 100% drop-in SAF.
