Gamma-valerolactone (GVL) as a biofuel: Investigation of GVL thermal decomposition and GVL + OH reaction
Type
ArticleAuthors
Liu, Dapeng
Farooq, Aamir

KAUST Department
Mechanical Engineering ProgramPhysical Science and Engineering (PSE) Division
Clean Combustion Research Center
Date
2023-04-20Embargo End Date
2025-04-20Permanent link to this record
http://hdl.handle.net/10754/691381
Metadata
Show full item recordAbstract
Recent works have highlighted the potential of lignocellulosic-derived γ-valerolactone (GVL) as a promising biofuel or a fuel additive. Its detailed chemistry is, however, not yet well-understood. In this work, we present the first high-temperature measurements of GVL + OH reaction behind reflected shock waves over 990–1294 K and pressures ∼ 1.2 bar. Around 990 K, our rate coefficients are ∼3 times faster than the average room-temperature determination. Our measured OH + GVL rate coefficients may be given as (unit: cm3molecule−1s−1): [Formula presented] We also conducted the first direct measurements of GVL thermal decomposition over 1214–1427 K and pressures ∼ 1.4 bar. GVL decomposition rate coefficients exhibit a similar slope to its acyclic counterpart, ethyl propionate, but GVL decomposes ∼80–120 times slower than ethyl propionate. Our determined GVL thermal decomposition rate coefficients may be expressed as (unit of s−1): [Formula presented] Our experimental work represents the first quantitative measurements of the reactions of the lactone family. Both reactions of the lactone family studied here proceeded slower than the normal-chain counterparts which affirms that ring constraints must be considered in rate coefficient analogies between normal-chain and cyclic molecules.Citation
Liu, D., & Farooq, A. (2023). Gamma-valerolactone (GVL) as a biofuel: Investigation of GVL thermal decomposition and GVL + OH reaction. Combustion and Flame, 253, 112771. https://doi.org/10.1016/j.combustflame.2023.112771Sponsors
Research reported in this publication was funded by King Abdullah University of Science and Technology (KAUST).Publisher
Elsevier BVJournal
Combustion and FlameAdditional Links
https://linkinghub.elsevier.com/retrieve/pii/S0010218023001554ae974a485f413a2113503eed53cd6c53
10.1016/j.combustflame.2023.112771