Article Dans Une Revue Energy & Fuels Année : 2025

A Microfluidic Reactor to Study the Oxidation Stability of Fuels: Application to a Sustainable Aviation Fuel Surrogate

Résumé

One potential solution to diminish the aviation carbon footprint is to blend Sustainable Aviation Fuel (SAF) into jet fuels. However, the thermal stability and oxidation stability of standard jet-fuels may be affected by the addition of SAF, and a better understanding of liquid fuel oxidation kinetics is needed.The development of a kinetically well-defined reactor to study this phenomenon remains a challenge, and it is in this context that a new Si-glass microfluidic reactor with a fluid supply made of inert polyether ether ketone (PEEK) has been developed. The experimental rig PEEK-ACHU (Autoxidation µChip Heated Unit) was used to investigate the oxidation stability of a SAF surrogate, and the results were compared to Induction Period (IP) measures, obtained in a standard PetroOxy device. A mixture of n-decane and isooctane was used as the surrogate SAF. The thermal oxidation stability of the mixtures was studied in the microreactor, working at conditions up to 453 K and 40 bar, with a gas-liquid segmented flow that allows the liquid oxidation to occur in homogeneous, self-agitated, liquid slugs, without oxygen diffusion / depletion kinetic limitations. PEEK-ACHU enables residence times as long as 3.8 hours to be reached on a 4-inch diameter Si/glass wafer, with visual access to the reactor, and a well-defined kinetic study of the liquid fuel autoxidation. The total hydroperoxide (ROOH) concentration was quantified at the exit of the microreactor using a specifically designed HPLC device with a post-column reactor for iodometric titration. For comparison, the same analysis was conducted on the SAF oxidized in the PetroOxy apparatus, with the same residence time. The results show that the microfluidic apparatus is able to perform reliable autoxidation measurements with well-controlled operating parameters. The visual access of the reactor is relevant for further investigations, such as spectroscopic monitoring of deposit formation.

Fichier principal
Vignette du fichier
Paper Bacha_final version.pdf (1.34 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05363492 , version 1 (13-11-2025)

Licence

Identifiants

Citer

Ryma Benrabah, Kanika Sood, Pierre-Alexandre Glaude, Emilien Girot, Philippe Arnoux, et al.. A Microfluidic Reactor to Study the Oxidation Stability of Fuels: Application to a Sustainable Aviation Fuel Surrogate. Energy & Fuels, 2025, 39 (44), pp.21625-21634. ⟨10.1021/acs.energyfuels.5c02737⟩. ⟨hal-05363492⟩
138 Consultations
98 Téléchargements

Altmetric

Partager

  • More