Call:
Email: luciag@unizar.es
Address:
ABOUT ME
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum .Lorem ipsum dolor sit amet, consectetur.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum .Lorem ipsum dolor sit amet, consectetur.
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum .Lorem ipsum dolor sit amet, consectetur.
PUBLICATIONS
2001
García, Lucía; Salvador, María L; Arauzo, Jesús; Bilbao, Rafael
Catalytic pyrolysis of biomass: Influence of the catalyst pretreatment on gas yields Journal Article
In: Journal of Analytical and Applied Pyrolysis, vol. 58-59, pp. 491–501, 2001, ISSN: 01652370.
@article{Garcia2001,
title = {Catalytic pyrolysis of biomass: Influence of the catalyst pretreatment on gas yields},
author = {Lucía García and María L Salvador and Jesús Arauzo and Rafael Bilbao},
doi = {10.1016/S0165-2370(00)00114-5},
issn = {01652370},
year = {2001},
date = {2001-04-01},
journal = {Journal of Analytical and Applied Pyrolysis},
volume = {58-59},
pages = {491--501},
publisher = {Elsevier},
abstract = {This experimental study of biomass catalytic pyrolysis at low temperatures (650 and 700°C) was carried out in an installation based on the Waterloo Fast Pyrolysis Process (WFPP) technology, with a Ni/Al coprecipitated catalyst introduced into the reaction bed where the thermochemical decomposition of biomass took place. The influence of the calcination temperature (750-850°C) and the activation conditions (hydrogen flow rate) of the catalyst were analyzed. The calcination temperature significantly influences the properties and performance of the catalyst. For the two reaction temperatures, 650 and 700°C, and with the catalyst calcined at 850°C, higher H2 and CO yields were obtained with the reduced catalyst (flow rate 3080 cm3 (STP)/min; WHSV = 0.826 h-1) than without reduction. However, the catalyst calcined at 750°C without reduction showed a good performance at the reaction temperature of 700°C. Considering the characterization and experimental results, it can be deduced that the catalyst calcined at 750°C is reduced by the reaction atmosphere forming a stable active phase, whereas for the catalyst calcined at 850°C more severe reduction conditions are necessary. textcopyright 2001 Elsevier Science B.V.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This experimental study of biomass catalytic pyrolysis at low temperatures (650 and 700°C) was carried out in an installation based on the Waterloo Fast Pyrolysis Process (WFPP) technology, with a Ni/Al coprecipitated catalyst introduced into the reaction bed where the thermochemical decomposition of biomass took place. The influence of the calcination temperature (750-850°C) and the activation conditions (hydrogen flow rate) of the catalyst were analyzed. The calcination temperature significantly influences the properties and performance of the catalyst. For the two reaction temperatures, 650 and 700°C, and with the catalyst calcined at 850°C, higher H2 and CO yields were obtained with the reduced catalyst (flow rate 3080 cm3 (STP)/min; WHSV = 0.826 h-1) than without reduction. However, the catalyst calcined at 750°C without reduction showed a good performance at the reaction temperature of 700°C. Considering the characterization and experimental results, it can be deduced that the catalyst calcined at 750°C is reduced by the reaction atmosphere forming a stable active phase, whereas for the catalyst calcined at 850°C more severe reduction conditions are necessary. textcopyright 2001 Elsevier Science B.V.
García, Lucía; Salvador, María L; Arauzo, Jesús; Bilbao, Rafael
CO2 as a gasifying agent for gas production from pine sawdust at low temperatures using a Ni/Al coprecipitated catalyst Journal Article
In: Fuel processing technology, vol. 69, no. 2, pp. 157–174, 2001, ISSN: 03783820.
@article{Garcia2001a,
title = {CO2 as a gasifying agent for gas production from pine sawdust at low temperatures using a Ni/Al coprecipitated catalyst},
author = {Lucía García and María L Salvador and Jesús Arauzo and Rafael Bilbao},
doi = {10.1016/S0378-3820(00)00138-7},
issn = {03783820},
year = {2001},
date = {2001-02-01},
journal = {Fuel processing technology},
volume = {69},
number = {2},
pages = {157--174},
publisher = {Elsevier Science Publishers B.V.},
abstract = {Catalytic CO2 gasification of pine sawdust has been carried out at a relatively low temperature, 700 °C, and at atmospheric pressure. The Ni/Al catalyst used was prepared by coprecipitation and calcined at 750 °C for 3 h. The influence of the catalyst weight/biomass flow rate (W/mb) ratio on product distribution and gas composition was analyzed. Using a CO2/biomass ratio of around 1, the increase of the W/mb ratio increases H2 and CO yields while CH4 and C2 yields decrease. Deactivation of the catalyst was also observed under the experimental conditions employed. The influence of the W/mb ratio on the initial gas yields has been also analyzed. For W/mb ratios ≥0.3 h, no significant modifications are observed on the initial yields of different gases, and it is confirmed that under these conditions the initial gas composition is close to that for thermodynamic equilibrium. The influence of the reaction atmosphere on gas yields has also been carried out, analyzing the results obtained in pyrolysis, steam gasification and CO2 gasification.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Catalytic CO2 gasification of pine sawdust has been carried out at a relatively low temperature, 700 °C, and at atmospheric pressure. The Ni/Al catalyst used was prepared by coprecipitation and calcined at 750 °C for 3 h. The influence of the catalyst weight/biomass flow rate (W/mb) ratio on product distribution and gas composition was analyzed. Using a CO2/biomass ratio of around 1, the increase of the W/mb ratio increases H2 and CO yields while CH4 and C2 yields decrease. Deactivation of the catalyst was also observed under the experimental conditions employed. The influence of the W/mb ratio on the initial gas yields has been also analyzed. For W/mb ratios ≥0.3 h, no significant modifications are observed on the initial yields of different gases, and it is confirmed that under these conditions the initial gas composition is close to that for thermodynamic equilibrium. The influence of the reaction atmosphere on gas yields has also been carried out, analyzing the results obtained in pyrolysis, steam gasification and CO2 gasification.
1999
García, Lucía; Salvador, María L; Arauzo, Jesús; Bilbao, Rafael
In: Energy and Fuels, vol. 13, no. 4, pp. 851–859, 1999, ISSN: 08870624.
@article{Garcia1999,
title = {Catalytic steam gasification of pine sawdust. Effect of catalyst weight/biomass flow rate and steam/biomass ratios on gas production and composition},
author = {Lucía García and María L Salvador and Jesús Arauzo and Rafael Bilbao},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/ef980250p},
issn = {08870624},
year = {1999},
date = {1999-07-01},
journal = {Energy and Fuels},
volume = {13},
number = {4},
pages = {851--859},
publisher = {ACS},
abstract = {Pine sawdust catalytic steam gasification has been studied in a fluidized bed at a relatively low temperature, 700 °C. The Ni-Al catalyst used was prepared by coprecipitation and calcined at 750 °C for 3 h. The influence of the catalyst weight/biomass flow rate (W/mb) and steam/biomass (S/B) ratios on the product distribution and on the quality of the gas product obtained was analyzed. An increase of the W/mb ratio increases the total gas, H2, CO, and CO2 yields, while CH4 and C2 yields decrease. An increase of the S/B ratio increases H2 and CO2 yields while CO and CH4 yields decrease. This fact can be explained by steam reforming and water-gas shift reactions. The increase of the S/B ratio also has a positive effect on the life of the catalyst. The gas composition and gas yields at initial time have also been studied. For W/mb ratios>0.5 h, the gas composition at initial time is similar to that for thermodynamic equilibrium for different S/B ratios. The influence of the S/B ratio on gas yield at initial time is more marked, up to a ratio of 1.5.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Pine sawdust catalytic steam gasification has been studied in a fluidized bed at a relatively low temperature, 700 °C. The Ni-Al catalyst used was prepared by coprecipitation and calcined at 750 °C for 3 h. The influence of the catalyst weight/biomass flow rate (W/mb) and steam/biomass (S/B) ratios on the product distribution and on the quality of the gas product obtained was analyzed. An increase of the W/mb ratio increases the total gas, H2, CO, and CO2 yields, while CH4 and C2 yields decrease. An increase of the S/B ratio increases H2 and CO2 yields while CO and CH4 yields decrease. This fact can be explained by steam reforming and water-gas shift reactions. The increase of the S/B ratio also has a positive effect on the life of the catalyst. The gas composition and gas yields at initial time have also been studied. For W/mb ratios>0.5 h, the gas composition at initial time is similar to that for thermodynamic equilibrium for different S/B ratios. The influence of the S/B ratio on gas yield at initial time is more marked, up to a ratio of 1.5.
1998
García, Lucía; Salvador, María L; Bilbao, Rafael; Arauzo, Jesús
Influence of calcination and reduction conditions on the catalyst performance in the pyrolysis process of biomass Journal Article
In: Energy and Fuels, vol. 12, no. 1, pp. 139–143, 1998, ISSN: 08870624.
@article{Garcia1998,
title = {Influence of calcination and reduction conditions on the catalyst performance in the pyrolysis process of biomass},
author = {Lucía García and María L Salvador and Rafael Bilbao and Jesús Arauzo},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/ef970097j},
issn = {08870624},
year = {1998},
date = {1998-01-01},
journal = {Energy and Fuels},
volume = {12},
number = {1},
pages = {139--143},
publisher = {American Chemical Society},
abstract = {The influence of several preparation parameters on the performance of a coprecipitated nickel alumina catalyst for use in the pyrolysis of lignocellulosic residues has been studied. The variables considered were calcination temperature (750 and 850 °C), reduction time (1, 2, and 3 h), and hydrogen flow in the reduction step (1740 and 3080 cm3 (STP)/min). The catalyst performance was evaluated on a bench scale plant equipped with a continuous fluidized bed reactor using the Waterloo fast pyrolysis process (WFPP) technology. The biomass used was pine sawdust and the reaction temperature was 650 °C. The results show that when the higher calcination temperature is applied, more severe operating conditions on the reduction process must also be applied, but catalyst sintering can appear when very severe reduction conditions are used.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The influence of several preparation parameters on the performance of a coprecipitated nickel alumina catalyst for use in the pyrolysis of lignocellulosic residues has been studied. The variables considered were calcination temperature (750 and 850 °C), reduction time (1, 2, and 3 h), and hydrogen flow in the reduction step (1740 and 3080 cm3 (STP)/min). The catalyst performance was evaluated on a bench scale plant equipped with a continuous fluidized bed reactor using the Waterloo fast pyrolysis process (WFPP) technology. The biomass used was pine sawdust and the reaction temperature was 650 °C. The results show that when the higher calcination temperature is applied, more severe operating conditions on the reduction process must also be applied, but catalyst sintering can appear when very severe reduction conditions are used.
García, Lucía; Salvador, María L; Arauzo, Jesús; Bilbao, Rafael
Influence of catalyst weight/biomass flow rate ratio on gas production in the catalytic pyrolysis of pine sawdust at low temperatures Journal Article
In: Industrial and Engineering Chemistry Research, vol. 37, no. 10, pp. 3812–3819, 1998, ISSN: 08885885.
@article{Garcia1998a,
title = {Influence of catalyst weight/biomass flow rate ratio on gas production in the catalytic pyrolysis of pine sawdust at low temperatures},
author = {Lucía García and María L Salvador and Jesús Arauzo and Rafael Bilbao},
url = {https://pubs.acs.org/sharingguidelines},
doi = {10.1021/ie9801960},
issn = {08885885},
year = {1998},
date = {1998-01-01},
journal = {Industrial and Engineering Chemistry Research},
volume = {37},
number = {10},
pages = {3812--3819},
publisher = {American Chemical Society},
abstract = {Pine sawdust catalytic pyrolysis has been studied in a fluidized bed at temperatures of 650 and 700 °C. The experimental work was carried out in a bench-scale plant based on Waterloo Fast Pyrolysis Process (WFPP) technology. The Ni-Al catalyst used was prepared by coprecipitation with a molar ratio 1:2 (Ni-Al) and calcined at 750 °C for 3 h. The catalyst was not reduced prior to the biomass reaction. The influence of the catalyst weight/biomass flow rate ratio (Wl mb) on the product distribution and on the quality of the gas product obtained was analyzed. An increase of the W/mb ratio increases the total gas yield and diminishes the liquid yield. When the W/mb ratio increases, H2 and CO yields increase while CO2, CH4, and C2 yields decrease. For W/mb ratios ≥ 0.4 h, no significant modifications are observed on the initial yields of different gases, and it is confirmed that under these conditions the initial gas composition is similar to that for thermodynamic equilibrium. For W/mb ratios < 0.4 h, a simple first-order kinetic equation has been suggested for H2 and CO formation. textcopyright 1998 American Chemical Society.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Pine sawdust catalytic pyrolysis has been studied in a fluidized bed at temperatures of 650 and 700 °C. The experimental work was carried out in a bench-scale plant based on Waterloo Fast Pyrolysis Process (WFPP) technology. The Ni-Al catalyst used was prepared by coprecipitation with a molar ratio 1:2 (Ni-Al) and calcined at 750 °C for 3 h. The catalyst was not reduced prior to the biomass reaction. The influence of the catalyst weight/biomass flow rate ratio (Wl mb) on the product distribution and on the quality of the gas product obtained was analyzed. An increase of the W/mb ratio increases the total gas yield and diminishes the liquid yield. When the W/mb ratio increases, H2 and CO yields increase while CO2, CH4, and C2 yields decrease. For W/mb ratios ≥ 0.4 h, no significant modifications are observed on the initial yields of different gases, and it is confirmed that under these conditions the initial gas composition is similar to that for thermodynamic equilibrium. For W/mb ratios < 0.4 h, a simple first-order kinetic equation has been suggested for H2 and CO formation. textcopyright 1998 American Chemical Society.