000150799 001__ 150799 000150799 005__ 20250214153851.0 000150799 0247_ $$2doi$$a10.1016/j.biombioe.2024.107572 000150799 0248_ $$2sideral$$a142734 000150799 037__ $$aART-2025-142734 000150799 041__ $$aeng 000150799 100__ $$aRuiz-Gutiérrez, A.$$uUniversidad de Zaragoza 000150799 245__ $$aUse of methanol as a promoter for ammonia combustion 000150799 260__ $$c2025 000150799 5060_ $$aAccess copy available to the general public$$fUnrestricted 000150799 5203_ $$aThis work aims to study the oxidation of ammonia and methanol mixtures (NH3/CH3OH). For this purpose, laboratory experiments were conducted using a quartz flow reactor at atmospheric pressure, in a temperature range of 875–1425 K. The oxygen excess ratio (λ) and the NH3/CH3OH ratio were modified during the experiments. The experimental results have been simulated with a literature-based kinetic mechanism. The results show that the presence of CH3OH and the oxygen excess ratio affect the conversion of NH3, shifting its oxidation to lower temperatures as these variables increase. The oxidation of both fuels was slightly boosted with increasing CH3OH concentration. The λ study showed that the fuel-lean conditions accelerate NH3 oxidation at lower temperatures whereas do not have the same effect on CH3OH oxidation. The H radical concentration significantly influences fuel consumption, especially in reactions involving CH3OH and NH2, and it is also key for inhibition processes. CH3OH was found to initiate NH3 reactions, with strong competition for OH radicals between the two fuels. Nevertheless, methanol helps reduce ammonia's oxidation temperature. CH2OH was identified as the predominant species following H-abstraction from CH3OH. In the NH3/CH3OH ratio studies, increasing methanol concentration lowered the oxidation temperature of both fuels, with a temperature difference of up to 150 K observed for NH3/CH3OH ratios from 0.6 to 10. Increasing methanol concentration for a given NH3 value also shifted the prominence of secondary reaction pathways, further influencing the overall oxidation process. 000150799 536__ $$9info:eu-repo/grantAgreement/ES/AEI/PID2021–12432OB-I00$$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R$$9info:eu-repo/grantAgreement/ES/MICINN PRE2022-104181$$9info:eu-repo/grantAgreement/EUR/MICINN/TED2021-129557B-I00 000150799 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000150799 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000150799 700__ $$aDiego, I. de 000150799 700__ $$0(orcid)0000-0003-4679-5761$$aAlzueta, M.U.$$uUniversidad de Zaragoza 000150799 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente 000150799 773__ $$g193 (2025), 107572 [11 pp.]$$pBiomass bioenergy$$tBIOMASS & BIOENERGY$$x0961-9534 000150799 8564_ $$s6142151$$uhttps://zaguan.unizar.es/record/150799/files/texto_completo.pdf$$yVersión publicada 000150799 8564_ $$s2498463$$uhttps://zaguan.unizar.es/record/150799/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000150799 909CO $$ooai:zaguan.unizar.es:150799$$particulos$$pdriver 000150799 951__ $$a2025-02-14-14:04:58 000150799 980__ $$aARTICLE