000147653 001__ 147653
000147653 005__ 20241220131256.0
000147653 0247_ $$2doi$$a10.1016/j.combustflame.2024.113875
000147653 0248_ $$2sideral$$a141154
000147653 037__ $$aART-2025-141154
000147653 041__ $$aeng
000147653 100__ $$aGarcía-Ruiz, Pedro$$uUniversidad de Zaragoza
000147653 245__ $$aHigh-pressure conversion of ammonia additivated with dimethyl ether in a flow reactor
000147653 260__ $$c2025
000147653 5060_ $$aAccess copy available to the general public$$fUnrestricted
000147653 5203_ $$aThe oxidation of ammonia (NH3) mixed with dimethyl ether (DME) was investigated from experimental and modeling points of view using a quartz flow reactor with argon as bath gas from 350 K to 1225 K, for two different DME/NH3 ratios (0.05 and 0.3), three oxygen excess ratios (λ = 0.7, 1 and 3) and various pressures (1, 10, 20 and 40 bar).
The effect of pressure, oxygen stoichiometry, temperature, and DME/NH3 ratio has been analyzed on DME, NH3, NO, NO2, N2O, N2, O2, H2, HCN, CH4, CO, and CO2 concentrations.
The present study indicates that oxygen availability, DME/NH3 ratio, and pressure are important variables that shift NH3 and DME conversion to lower temperatures as their values increase. Under certain conditions, the pressure effect can avoid NO and HCN production, which would represent a benefit for pressure applications.
The main products of ammonia/dimethyl ether oxidation are N2, N2O, CO, and CO2, and under certain conditions, NO, H2, CH4, and HCN are also produced. NO2 is always detected below 5 ppm for all the conditions considered. The N2O formation is favored by increasing the O2 stoichiometry, pressure, and/or DME/NH3 ratio.
The experimental results are interpreted and discussed in terms of an updated detailed chemical kinetic mechanism, which captures, with a general good agreement, the main trends of NH3 and DME conversion under the considered conditions. Despite this, some calculated species present discrepancies with the experimental results. The main challenge is the consideration of the C-N interactions that can be present in the combustion of DME/NH3 mixtures.
000147653 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-23R$$9info:eu-repo/grantAgreement/ES/MINECO/PID2021-124032OB-I00$$9info:eu-repo/grantAgreement/ES/MINECO/PRE2019-090162$$9info:eu-repo/grantAgreement/EUR/MINECO/TED2021-129557B-I00
000147653 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000147653 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000147653 700__ $$aFerrando, Pablo
000147653 700__ $$0(orcid)0000-0001-7559-9669$$aAbián, María$$uUniversidad de Zaragoza
000147653 700__ $$0(orcid)0000-0003-4679-5761$$aAlzueta, María U.$$uUniversidad de Zaragoza
000147653 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000147653 7102_ $$15005$$2790$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Tecnologi. Medio Ambiente
000147653 773__ $$g272 (2025), 113875 [16 pp.]$$pCombust. flame$$tCombustion and Flame$$x0010-2180
000147653 8564_ $$s3197879$$uhttps://zaguan.unizar.es/record/147653/files/texto_completo.pdf$$yVersión publicada
000147653 8564_ $$s2458912$$uhttps://zaguan.unizar.es/record/147653/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000147653 909CO $$ooai:zaguan.unizar.es:147653$$particulos$$pdriver
000147653 951__ $$a2024-12-20-12:01:19
000147653 980__ $$aARTICLE