000166081 001__ 166081
000166081 005__ 20260212204407.0
000166081 0247_ $$2doi$$a10.1016/j.fuel.2025.138129
000166081 0248_ $$2sideral$$a147461
000166081 037__ $$aART-2026-147461
000166081 041__ $$aeng
000166081 100__ $$aGarcía-Ruiz, P.
000166081 245__ $$aOxidation of diethyl ether/ammonia mixtures in a flow reactor at different pressures
000166081 260__ $$c2026
000166081 5060_ $$aAccess copy available to the general public$$fUnrestricted
000166081 5203_ $$aAmmonia (NH3) in their mixtures with diethyl ether (DEE) represents a strategy to reduce CO2 emissions and overcome the limitations of NH3 combustion, even for a small addition of DEE (5 %). DEE is considered a potential substitute for fossil fuels when obtained from bioethanol. The present work performs an experimental and kinetic analysis of DEE/NH3 oxidation and the formation of combustion products at different pressures (1–40 bar), in the 290 K–1180 K temperature range using a quartz tubular flow reactor by analyzing the effects of the main variables (pressure, temperature, oxygen excess ratio, and DEE/NH3 ratio) using argon as a bath gas. The results indicate that either increasing pressure, DEE/NH3 ratio, or oxygen availability results in a shift of NH3 and DEE conversion to lower temperatures. DEE and NH3 show a negative temperature coefficient (NTC) phenomenon at low temperatures, influenced by pressure, oxygen excess, and the DEE/NH3 ratio. The pressure effect is particularly significant in the low pressures studied. The main nitrogen products are N2 and N2O. HCN is only produced under atmospheric pressure, while NO2 and NO concentrations are below the detection limit under all considered conditions. N2O formation is favored by increasing stoichiometry, pressure, and DEE/NH3 ratio. Apart from CO and CO2, CH4, CH3OH, C2H4, and CH3CHO have been found as produced carbon pecies. The experimental results are interpreted in terms of a chemical kinetic mechanism for DEE/NH3 mixtures, which can describe the main trend of NH3 and DEE conversion under the studied conditions.
000166081 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-124032OB-I00$$9info:eu-repo/grantAgreement/EUR/MICINN/TED2021-129557B-I00$$9info:eu-repo/grantAgreement/ES/MINECO/PRE2019-090162
000166081 540__ $$9info:eu-repo/semantics/embargoedAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
000166081 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000166081 700__ $$aGarcía, M.
000166081 700__ $$aAbián, M.
000166081 700__ $$0(orcid)0000-0003-4679-5761$$aAlzueta, M.U.$$uUniversidad de Zaragoza
000166081 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000166081 773__ $$g413 (2026), 138129 [11 pp.]$$pFuel$$tFuel$$x0016-2361
000166081 8564_ $$s763334$$uhttps://zaguan.unizar.es/record/166081/files/texto_completo.pdf$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2028-01-04
000166081 8564_ $$s1469365$$uhttps://zaguan.unizar.es/record/166081/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint$$zinfo:eu-repo/date/embargoEnd/2028-01-04
000166081 909CO $$ooai:zaguan.unizar.es:166081$$particulos$$pdriver
000166081 951__ $$a2026-02-12-20:41:34
000166081 980__ $$aARTICLE