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Article
Energy & Fuels
Randall C. Boehm et al.
Summary: A quantitative structure-property relationship model has been developed to predict the threshold sooting index (TSI) of arbitrary mixtures of aliphatic and aromatic hydrocarbons. The model utilizes molecular fragments, a global shift, and a penalty factor to make predictions. The model has been validated and found to accurately predict TSI values.
Article
Energy & Fuels
Randall C. Boehm et al.
Summary: A detailed assessment is presented on the calculation and uncertainty of the lower heating value of conventional and sustainable aviation fuels. The study compares calculations using the method described in this paper with measurements using ASTM D4809, and finds consistent results within 95% confidence intervals. The method described in this work exhibits high accuracy and precision for different fuel compositions.
Article
Energy & Fuels
Joshua Heyne et al.
Summary: This study employs two-dimensional gas chromatography and Vacuum Ultraviolet identification technique to investigate fuel composition and property predictions, and the results demonstrate that VUV identification can enhance the accuracy of property predictions. This method provides a process for prescreening sustainable aviation fuel candidates, facilitating the development of chemical process models and automating property determinations for computational fluid dynamics.
Article
Energy & Fuels
Zhibin Yang et al.
Summary: This study reports the development of a jet fuel blend component using a specific feedstock and chemical process. The blended fuel showed similar operability properties to conventional jet fuel, indicating its potential use as a sustainable aviation fuel.
Article
Energy & Fuels
Felix Link et al.
Summary: Aviation turbine fuel needs to maintain fluidity at low temperatures during high-altitude flights. The viscosity-temperature relation of petroleum-derived jet fuel is described by the MacCoull correlation in ASTM D341. Compliance with viscosity limits is crucial for synthesized paraffinic kerosene (SPK) to be approved as synthetic jet fuel. Measurement and comparison of viscosity and freezing point were conducted for different fractions of petroleum-based kerosene and SPK. The freezing point was found to be influenced by the freezing point characteristics of the n-alkanes.
Article
Multidisciplinary Sciences
Jacob H. Miller et al.
Summary: Biomass conversion to fuels and chemicals is crucial to decarbonization, but choosing an advantageous upgrading pathway out of many options is challenging. Researchers present a method enabling high-throughput screening by approximating upgrading unit operations and drop-in compatibility of products, and apply it to VFA conversion to liquid transportation fuels.
Article
Energy & Fuels
Felix Link et al.
Summary: The viscosity-temperature relationship and freezing point of aviation turbine fuel are important for flight safety and performance, and must comply with specific specifications. The MacCoull correlation is found to accurately describe the viscosity-temperature dependencies of both petroleum-derived and synthetic jet fuels. However, there may be underestimation when extrapolating viscosity data to -40 degrees C. Additionally, differential scanning calorimetry is a reliable method for determining the freezing point of jet fuel, and variations in freezing point with increasing boiling point were observed.
Article
Green & Sustainable Science & Technology
Kok Siew Ng et al.
Summary: The global commercial aviation industry is increasingly incorporating biojet fuels, with the HEFA pathway considered the most cost-effective and low greenhouse gas emission option. However, competition with the road transport biofuel market poses a challenge. Promoting lignocellulosic biomass and waste feedstock is advised to reduce emissions from food/feed crops and indirect land use change.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Energy & Fuels
Joshua Heyne et al.
Summary: This paper outlines the benefits and procedures for prescreening Sustainable Aviation Fuel candidates before entering the official ASTM D4054 evaluation process. Specific properties are identified for early estimation and direct measurement to guide fuel processing development, demonstrated with two exemplary candidate fuels.
Article
Energy & Fuels
Zhibin Yang et al.
Summary: Currently, only seven annexes defining alternative fuels have been approved due to the high cost and time required for evaluation and approval. Researchers have developed a Tier ? pre-screening tool to predict the acceptability of novel sustainable aviation fuel candidates with minimal material volumes required.
Article
Multidisciplinary Sciences
Nabila A. Huq et al.
Summary: The paper evaluates the catalytic conversion of food waste-derived VFAs to produce n-paraffin SAF for near-term use as a 10 vol% blend for ASTM Fast Track qualification and produce a highly branched, isoparaffin VFA-SAF to increase the renewable blend limit. VFA ketonization models assessed the carbon chain length distributions suitable for each VFA-SAF conversion pathway, and food waste-derived VFA ketonization was demonstrated for >100 h of time on stream at approximately theoretical yield. Fuel property blending models and experimental testing determined normal paraffin VFA-SAF meets 10 vol% fuel specifications for Fast Track. Synergistic blending with isoparaffin VFA-SAF increased the blend limit to 70 vol% by addressing flashpoint and viscosity constraints, with sooting 34% lower than fossil jet. Techno-economic analysis evaluated the major catalytic process cost-drivers, determining the minimum fuel selling price as a function of VFA production costs. Life cycle analysis determined that if food waste is diverted from landfills to avoid methane emissions, VFA-SAF could enable up to 165% reduction in greenhouse gas emissions relative to fossil jet.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Physical
Sebastian Nicolay et al.
Summary: This paper investigates the potential of using liquid hydrogen and fuel cells in general aviation by designing an efficient aircraft configuration and evaluating it in terms of performance and emissions through design requirements, baseline design, and multidisciplinary design optimization.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Jeffrey M. Collins et al.
Article
Engineering, Chemical
Robert E. Franzoi et al.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Energy & Fuels
Shane Kosir et al.
Article
Engineering, Chemical
Chong Peng et al.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Engineering, Aerospace
Meredith Colket et al.
Article
Agricultural Engineering
Xuesong Zhang et al.
BIORESOURCE TECHNOLOGY
(2016)
Article
Engineering, Chemical
Diana C. C. Lopez et al.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2013)
Article
Engineering, Chemical
Alexandre Vigneault et al.
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
(2010)
