Call: +34 876555451
Email: marrodan@unizar.es
Address: Office 4.01.02 Mariano Equillor s/n. Campus Río Ebro. Edificio I+D+i. 50018. Zaragoza. Aragón. Spain.
ABOUT ME
Research Interests
Oxidation of organic compounds under combustion conditions. Chemical kinetics modelling. Control of atmospheric pollution. Monitoring of air quality.
PUBLICATIONS
2016
Marrodán, Lorena; Berdusán, Laura; Aranda, Verónica; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Influence of dimethyl ether addition on the oxidation of acetylene in the absence and presence of NO Journal Article
In: Fuel, vol. 183, pp. 1–8, 2016, ISSN: 00162361.
@article{Marrodan2016b,
title = {Influence of dimethyl ether addition on the oxidation of acetylene in the absence and presence of NO},
author = {Lorena Marrodán and Laura Berdusán and Verónica Aranda and Ángela Millera and Rafael Bilbao and María U Alzueta},
doi = {10.1016/j.fuel.2016.06.011},
issn = {00162361},
year = {2016},
date = {2016-11-01},
journal = {Fuel},
volume = {183},
pages = {1--8},
publisher = {Elsevier Ltd},
abstract = {Dimethyl ether (DME) is a promising diesel fuel additive for reducing soot and NOx emissions, because of its interesting properties and the possibility of a renewable production. An experimental and modeling study of the oxidation of acetylene (C2H2, considered as an important soot precursor) and DME mixtures has been performed under well-controlled flow reactor conditions. The influence of temperature, air excess ratio ($łambda$) and presence of NO on the oxidation process has been analyzed. Under fuel-rich conditions, the presence of DME in these mixtures modifies the radical pool delaying the acetylene consumption. C2H2 and DME, and the radicals generated in their conversion, interact with NO achieving different levels of NO concentration diminution depending upon the operating conditions. Under fuel-lean conditions, the presence of DME in the mixtures increases the NO diminution, whereas for the other values of $łambda$ considered, the maximum NO decrease reached is lower than that obtained in the case of pure acetylene.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dimethyl ether (DME) is a promising diesel fuel additive for reducing soot and NOx emissions, because of its interesting properties and the possibility of a renewable production. An experimental and modeling study of the oxidation of acetylene (C2H2, considered as an important soot precursor) and DME mixtures has been performed under well-controlled flow reactor conditions. The influence of temperature, air excess ratio ($łambda$) and presence of NO on the oxidation process has been analyzed. Under fuel-rich conditions, the presence of DME in these mixtures modifies the radical pool delaying the acetylene consumption. C2H2 and DME, and the radicals generated in their conversion, interact with NO achieving different levels of NO concentration diminution depending upon the operating conditions. Under fuel-lean conditions, the presence of DME in the mixtures increases the NO diminution, whereas for the other values of $łambda$ considered, the maximum NO decrease reached is lower than that obtained in the case of pure acetylene.
Marrodán, Lorena; Monge, Fabiola; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
Dimethoxymethane Oxidation in a Flow Reactor Journal Article
In: Combustion Science and Technology, vol. 188, no. 4-5, pp. 719–729, 2016, ISSN: 1563521X.
@article{Marrodan2016a,
title = {Dimethoxymethane Oxidation in a Flow Reactor},
author = {Lorena Marrodán and Fabiola Monge and Ángela Millera and Rafael Bilbao and María U Alzueta},
url = {https://www.tandfonline.com/doi/abs/10.1080/00102202.2016.1138826},
doi = {10.1080/00102202.2016.1138826},
issn = {1563521X},
year = {2016},
date = {2016-05-01},
journal = {Combustion Science and Technology},
volume = {188},
number = {4-5},
pages = {719--729},
publisher = {Taylor and Francis Inc.},
abstract = {The simultaneous reduction of NOx and soot emissions from diesel engines is a major research subject and a challenge in today's world. One prospective solution involves diesel fuel reformulation by addition of oxygenated compounds, such as dimethoxymethane (DMM). In this context, different DMM oxidation experiments have been carried out in an atmospheric pressure gas-phase installation, in the 573–1373 K temperature range, from pyrolysis to fuel-lean conditions. The results obtained have been interpreted by means of a detailed gas-phase chemical kinetic mechanism. Results indicate that the initial oxygen concentration slightly influences the consumption of DMM. However, certain effects can be observed in the profiles of the main products (CH4, CH3OH, CH3OCHO, CO, CO2, C2H2, C2H4, and C2H6). Acetylene, an important soot precursor, is only formed under pyrolysis and reducing conditions. In general, a good agreement between experimental and modeling data was observed.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The simultaneous reduction of NOx and soot emissions from diesel engines is a major research subject and a challenge in today’s world. One prospective solution involves diesel fuel reformulation by addition of oxygenated compounds, such as dimethoxymethane (DMM). In this context, different DMM oxidation experiments have been carried out in an atmospheric pressure gas-phase installation, in the 573–1373 K temperature range, from pyrolysis to fuel-lean conditions. The results obtained have been interpreted by means of a detailed gas-phase chemical kinetic mechanism. Results indicate that the initial oxygen concentration slightly influences the consumption of DMM. However, certain effects can be observed in the profiles of the main products (CH4, CH3OH, CH3OCHO, CO, CO2, C2H2, C2H4, and C2H6). Acetylene, an important soot precursor, is only formed under pyrolysis and reducing conditions. In general, a good agreement between experimental and modeling data was observed.
2015
Marrodán, Lorena; Royo, Eduardo; Millera, Ángela; Bilbao, Rafael; Alzueta, María U
High pressure oxidation of dimethoxymethane Journal Article
In: Energy and Fuels, vol. 29, no. 5, pp. 3507–3517, 2015, ISSN: 15205029.
@article{Marrodan2015,
title = {High pressure oxidation of dimethoxymethane},
author = {Lorena Marrodán and Eduardo Royo and Ángela Millera and Rafael Bilbao and María U Alzueta},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/acs.energyfuels.5b00459},
issn = {15205029},
year = {2015},
date = {2015-05-01},
journal = {Energy and Fuels},
volume = {29},
number = {5},
pages = {3507--3517},
publisher = {American Chemical Society},
abstract = {The oxidation of dimethoxymethane (DMM) has been studied under a wide range of temperatures (373-1073 K), pressures (20-60 bar) and air excess ratios ($łambda$ = 0.7, 1 and 20), from both experimental and modeling points of view. Experimental results have been interpreted and analyzed in terms of a detailed gas-phase chemical kinetic mechanism for describing the DMM oxidation. The results show that the DMM oxidation regime for 20, 40 and 60 bar is very similar for both reducing and stoichiometric conditions. For oxidizing conditions, a plateau in the DMM, CO and CO<inf>2</inf> concentration profiles as a function of the temperature can be observed. This zone seems to be associated with the peroxy intermediate, CH<inf>3</inf>OCH<inf>2</inf>O<inf>2</inf>, whose formation and consumption reactions appear to be important for the description of DMM conversion under high pressure and high oxygen concentration conditions.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The oxidation of dimethoxymethane (DMM) has been studied under a wide range of temperatures (373-1073 K), pressures (20-60 bar) and air excess ratios ($łambda$ = 0.7, 1 and 20), from both experimental and modeling points of view. Experimental results have been interpreted and analyzed in terms of a detailed gas-phase chemical kinetic mechanism for describing the DMM oxidation. The results show that the DMM oxidation regime for 20, 40 and 60 bar is very similar for both reducing and stoichiometric conditions. For oxidizing conditions, a plateau in the DMM, CO and CO<inf>2</inf> concentration profiles as a function of the temperature can be observed. This zone seems to be associated with the peroxy intermediate, CH<inf>3</inf>OCH<inf>2</inf>O<inf>2</inf>, whose formation and consumption reactions appear to be important for the description of DMM conversion under high pressure and high oxygen concentration conditions.