Alcohol to Jet Fuel Technology Landscape 2026 — PatSnap Eureka
Alcohol to Jet Fuel Technology Landscape 2026
ATJ technology converts biomass-derived alcohols into ASTM D7566-compliant synthetic paraffinic kerosene. Patent filings span 2011–2025 across Gevo, Honeywell, Shell, TotalEnergies, and Greenfield Global.
From Fermentation to Flight: The ATJ Process Chain
Alcohol-to-jet fuel converts biomass-derived alcohols—primarily ethanol and isobutanol—into synthetic paraffinic kerosene through catalytic dehydration, oligomerization, and hydrogenation. The resulting fuel, principally composed of C12 and C16 alkanes, meets ASTM D7566 requirements for hydroprocessed synthesized paraffinic kerosene blendstocks.
The process chain spans feedstock fermentation of sugars into C2–C6 alcohols, catalytic dehydration to olefins, oligomerization to C8–C16 olefins, hydrogenation to saturated isoparaffins, and fractionation to recover the kerosene-range jet fuel cut. Isobutanol and ethanol are the dominant ATJ substrates across retrieved patent records.
A 2017 techno-economic literature study confirmed ATJ is technically feasible from sugary, starchy, and lignocellulosic biomass via fermentation to ethanol or other alcohols, benchmarking breakeven prices under feedstock and market uncertainty scenarios. ATJ-SPK can be blended up to 50% with conventional Jet A-1 without engine modification.
The patent record in this dataset spans 2011 to late 2025, reflecting a field transition from proof-of-concept to active commercial process engineering. Five assignees—Gevo, Greenfield Global, Honeywell, TotalEnergies One Tech, and Shell—account for the majority of ATJ-specific filings across US, WO, EP, KR, JP, AU, NZ, and IN jurisdictions.
ATJ Patent Filing Activity: Timeline and Jurisdictional Distribution
The ATJ patent record in this dataset spans 2011 to late 2025, with distinct activity clusters reflecting foundational IP establishment, technology consolidation, and recent commercial-scale filings. Jurisdictional coverage has expanded from US/EP/WO to include KR, JP, AU, NZ, and IN in 2024–2025.
ATJ Patent Filings by Period (Dataset)
Filing activity clusters into four distinct periods: foundational (2011–2013), consolidation (2014–2017), ASTM-driven (2018–2022), and active commercial (2023–2025).
ATJ Patent Jurisdictional Distribution (Dataset)
US filings dominate the dataset, with WO, EP, and Asia-Pacific (KR, JP, AU, NZ, IN) filings reflecting international IP expansion strategies, especially in 2024–2025.
Where ATJ Fuel Technology Is Being Deployed
ATJ fuel patents and literature address three primary application domains: commercial aviation SAF blending, military aviation, and regional bioeconomy development in biomass-rich nations.
Key Innovation Signals in ATJ Patents (2024–2025)
The most recent filings in this dataset reveal five directional shifts: bioethanol feedstock prioritisation, integrated aromatic production, renewable component specification engineering, policy-linked process design, and Asia-Pacific IP expansion.
Bioethanol Emerging as Primary ATJ Feedstock
Both Honeywell (US, 2025) and Greenfield Global (WO/US/NZ/AU, 2024–2025) explicitly position ethanol as the primary ATJ feedstock, reflecting ethanol’s global production scale advantage over isobutanol. Greenfield’s process accommodates mixed alcohol feeds including ethanol/isobutanol blends, signalling real-world feedstock flexibility. This shift reflects ethanol’s established fermentation infrastructure globally.
Fluidized-Bed Conversion for Integrated Aromatic Production
TotalEnergies One Tech’s 2025 KR and JP filings describe single-reactor fluidized-bed conversion of C1–C6 alcohol streams, yielding paraffins, olefins, and aromatic compounds in one stage before downstream oligomerization and alkylation. This design directly addresses the ATJ-SKA ASTM standard, which permits higher aromatics content and higher blending ratios. Integration avoids a separate BTX blending step, a significant process simplification.
Isobutanol-to-Jet vs. Ethanol-to-Jet: Key Dimensions
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| Dimension | Isobutanol-to-Jet (ATJ-SPK) | Ethanol-to-Jet (ATJ-SPK/SKA) |
|---|---|---|
| Primary Feedstock | Isobutanol from biomass fermentation (sugarcane, corn, lignocellulosic switchgrass) | Bioethanol from corn, sugarcane, or lignocellulosic fermentation |
| Key Assignees in Dataset | Gevo, Inc. (6 patent documents, 2011–2017) | Honeywell, Greenfield Global, TotalEnergies One Tech (2024–2025) |
| Process Architecture | Dehydration → oligomerization → hydrogenation (3-stage catalytic sequence) | Dehydration → oligomerization/alkylation → hydrogenation; or fluidized-bed single-stage |
| ASTM Compliance | ASTM D7566 ATJ-SPK (up to 50% blend with Jet A-1) | ASTM D7566 ATJ-SPK and ATJ-SKA (aromatics-bearing variant, higher blending ratios) |
| Aromatic Production | Not inherent to isobutanol pathway; requires separate blending | Integrated via fluidized-bed conversion (TotalEnergies) or post-synthesis blending |
| IP Maturity | Foundational patents (2011–2017); multi-jurisdictional US and EP grants active | Active commercial filings (2024–2025); pending in US, WO, KR, JP, AU, NZ, IN |
| Feedstock Availability | Isobutanol less globally available; requires dedicated fermentation capacity | Ethanol globally available with established fermentation infrastructure |
| Product Focus | Synthetic paraffinic kerosene blendstock (C12/C16 alkanes) | ATJ-SPK blendstock or fully formulated renewable kerosene component (Shell, Neste) |
Frequently Asked Questions: Alcohol to Jet Fuel Technology
Alcohol-to-jet (ATJ) technology converts biomass-derived alcohols—primarily ethanol and isobutanol—into synthetic paraffinic kerosene through catalytic dehydration to produce light olefins, oligomerization to C8–C16 olefins, and hydrogenation to yield saturated isoparaffins and n-alkanes constituting jet fuel blendstock.
ATJ fuel is governed by ASTM D7566. ATJ-SPK (synthesized paraffinic kerosene) can be blended up to 50% with conventional Jet A-1 without engine modification. An aromatics-bearing variant, ATJ-SKA, has also received ASTM approval, permitting higher aromatics content and different blending configurations.
Gevo, Inc. is the most prolific ATJ filer in this dataset with 6 patent documents across US, EP, and WO jurisdictions (2011–2017), covering the foundational isobutanol dehydration-oligomerization-hydrogenation pathway. Greenfield Global follows with 4 documents across WO, US, NZ, and AU (2024–2025). Honeywell, TotalEnergies One Tech, and Shell each have 1–2 filings in the 2025 period.
ATJ-SPK is a synthesized paraffinic kerosene composed principally of C12 and C16 alkanes, compliant with ASTM D7566. ATJ-SKA (with aromatics) is a separately approved variant that includes aromatic compounds, which are required for elastomer swelling in engine fuel seals. ATJ-SKA permits higher aromatics content and different blending ratios compared to purely paraffinic ATJ-SPK.
Key 2024–2025 signals include: TotalEnergies One Tech’s fluidized-bed single-reactor conversion of C1–C6 alcohols to paraffins, olefins, and aromatics (KR and JP filings); Honeywell’s bioethanol-to-jet system referencing US SAF Grand Challenge and Indian bioethanol blending policy; Greenfield Global’s mixed alcohol feedstock process across four jurisdictions; and Shell’s engineered low freezing point (below −47°C) renewable jet fuel component filings in WO and IN.
Yes. A 2017 techno-economic analysis in this dataset confirmed ATJ is technically feasible from sugary, starchy, and lignocellulosic biomass via fermentation to ethanol or other alcohols. The study benchmarked breakeven prices under feedstock and market uncertainty scenarios, examining three biomass feedstock types including lignocellulosic sources.
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