Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Cycloalkane-rich sustainable aviation fuel production via hydrotreating lignocellulosic biomass-derived catalytic fast pyrolysis oils

Journal Article · · Sustainable Energy & Fuels
DOI:https://doi.org/10.1039/d4se01151a· OSTI ID:2475477

Sustainable aviation fuel (SAF) produced from lignocellulosic biomass is emerging as an ideal alternative to conventional jet fuel for aviation sector decarbonization. Catalytic fast pyrolysis (CFP) can convert lignocellulosic biomass into relatively stable bio-oil that can be selectively transformed to various transportation fuels through hydroprocessing under conditions of different severities. In this contribution, two CFP oils produced from pine-based feedstocks over different types of catalysts (i.e., ZSM-5 and Pt/TiO2 catalysts) were hydrotreated at 125 bar in a non-isothermal process with a maximum temperature of 385 °C over a sulfided NiMo/Al2O3 catalyst to produce SAF with high cycloalkane concentrations of 89–92 wt%. Cycloalkanes are an important component of jet fuel with advantageous fuel properties, such as high energy density, low sooting, and potential for replacing aromatic hydrocarbons to provide good seal swelling properties. The hydrotreating process successfully converted 91–92% of the biogenic carbon in the CFP oil intermediates to liquid-phase hydrotreated products. Through distillation, 39–40 wt% of the hydrotreated oils were collected in the jet-fuel range as SAF fractions. The rest of the hydrotreated product could be valorized as fuels (e.g., diesel) or chemicals. The SAF fractions with oxygen contents below the detection limit (<0.01 wt%) met ASTM D7566 finished fuel blend and D4054 Tier 1 specifications with respect to density, lower heating value (LHV), volatility, flash point, and freeze point. These results indicate hydrotreating lignocellulosic biomass-derived CFP oil as a promising pathway to produce high-quality SAF rich in cycloalkanes. Continued research is required to increase the SAF yield by process improvements, such as increased CFP oil yields, and an enhanced production of SAF-range molecules via e.g., cracking of high-molecular weight compounds either during CFP or hydrotreating, as well as evaluation of a broader range of jet fuel properties and performance requirements.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Bioenergy Technologies Office (BETO)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
2475477
Report Number(s):
NREL/JA--5100-91024; MainId:92802; UUID:4018a883-d0cd-482d-9113-6ff50102bf57; MainAdminId:74074
Journal Information:
Sustainable Energy & Fuels, Journal Name: Sustainable Energy & Fuels Journal Issue: 23 Vol. 8; ISSN 2398-4902
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

References (30)

Catalytic Fast Pyrolysis: Influencing Bio-Oil Quality with the Catalyst-to-Biomass Ratio journal July 2016
Sustainable aviation fuel: Pathways to fully formulated synthetic jet fuel via Fischer–Tropsch synthesis journal January 2023
Current research on thermochemical conversion of biomass at the National Renewable Energy Laboratory journal April 2012
Performance and techno-economic evaluations of co-processing residual heavy fraction in bio-oil hydrotreating journal April 2021
Sooting tendencies of diesel fuels, jet fuels, and their surrogates in diffusion flames journal June 2017
Production of low-oxygen bio-oil via ex situ catalytic fast pyrolysis and hydrotreating journal November 2017
A machine learning framework for drop-in volume swell characteristics of sustainable aviation fuel journal August 2020
A review of conversion of lignocellulose biomass to liquid transport fuels by integrated refining strategies journal November 2020
Investigation into the shape selectivity of zeolite catalysts for biomass conversion journal April 2011
Sustainable aviation fuel – Comprehensive study on highly selective isomerization route towards HEFA based bioadditives journal January 2024
A Review of Recent Research on Catalytic Biomass Pyrolysis and Low-Pressure Hydropyrolysis journal November 2021
Measurements of Nitrile Rubber Absorption of Hydrocarbons: Trends for Sustainable Aviation Fuel Compatibility journal June 2023
From Biomass to Fuel Blendstocks via Catalytic Fast Pyrolysis and Hydrotreating: An Evaluation of Carbon Efficiency and Fuel Properties for Three Pathways journal November 2023
Thermal Reactivity of Bio-Oil Produced from Catalytic Fast Pyrolysis of Biomass journal October 2024
In Situ and ex Situ Catalytic Pyrolysis of Pine in a Bench-Scale Fluidized Bed Reactor System journal December 2015
Red Mud Catalytic Pyrolysis of Pinyon Juniper and Single-Stage Hydrotreatment of Oils journal July 2016
Optimizing Process Conditions during Catalytic Fast Pyrolysis of Pine with Pt/TiO 2 —Improving the Viability of a Multiple-Fixed-Bed Configuration journal January 2021
Catalytic pyrolysis as a platform technology for supporting the circular carbon economy journal July 2023
Quantitative 13 C NMR characterization of fast pyrolysis oils journal January 2016
Driving towards cost-competitive biofuels through catalytic fast pyrolysis by rethinking catalyst selection and reactor configuration journal January 2018
Advancements and challenges in the production of low-carbon fuels via catalytic fast pyrolysis of biomass through refinery integration and co-product generation journal January 2023
Prediction of sustainable aviation fuel properties for liquid hydrocarbons from hydrotreating biomass catalytic fast pyrolysis derived organic intermediates journal January 2023
Opening pathways for the conversion of woody biomass into sustainable aviation fuel via catalytic fast pyrolysis and hydrotreating journal August 2024
Diesel production via standalone and co-hydrotreating of catalytic fast pyrolysis oil journal January 2024
Toward net-zero sustainable aviation fuel with wet waste–derived volatile fatty acids journal March 2021
Acid Number Determination of Pyrolysis Bio-oils using Potentiometric Titration: Laboratory Analytical Procedure (LAP) report March 2016
Sustainable Aviation Fuel: Review of Technical Pathways report September 2020
2023 Billion-Ton Report report January 2024
Use of Sustainable Fuels in Aviation—A Review journal March 2022
Alternative Aviation Fuel Types Used in Aircraft Engine journal October 2023