Jesús Arauzo

@article{raso_aqueous_2023,

title = {Aqueous phase hydrogenolysis of glycerol with in situ generated hydrogen over Ni/Al3Fe1 catalyst: effect of the calcination temperature},

author = {Raquel Raso and Alejandro Lete and Lucía García and Joaquín Ruiz and Miriam Oliva and Jesús Arauzo},

url = {https://pubs.rsc.org/en/content/articlelanding/2023/ra/d2ra07929a},

doi = {10.1039/D2RA07929A},

issn = {2046-2069},

year  = {2023},

date = {2023-02-01},

urldate = {2023-02-01},

journal = {RSC Advances},

volume = {13},

number = {8},

pages = {5483–5495},

abstract = {The present work studied the influence of the calcination temperature on the aqueous phase hydrogenolysis of glycerol with in situ generated hydrogen over a Ni/Al3Fe1 catalyst. The Ni/Al3Fe1 catalyst was synthesized by the co-precipitation method at 28 mol% of Ni (Ni/(Ni + Al + Fe)) and a molar ratio of Al/Fe of 3/1. The prepared catalyst was calcined at different temperatures (500–750 °C). The obtained samples were tested for the aqueous phase hydrogenolysis (APH) of glycerol and characterized by several analytical techniques (ICP-OES, H2-TPR, XRD, N2-physisorption, NH3-TPD, STEM, FESEM, and TGA). The catalyst calcined at 625 °C was selected as the best sample due to its high acidity, metal dispersion, and catalytic activity; 1,2-propanediol was the highest carbon selectivity product. In addition, it experienced lower metal leaching than the catalyst calcined at 500 °C.},

note = {Publisher: The Royal Society of Chemistry},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Afailal2023,

title = {Thermochemical valorization of argan nutshells: Torrefaction and air–steam gasification},

author = {Zainab Afailal and Noemí Gil-Lalaguna and Isabel Fonts and Alberto Gonzalo and Jesús Arauzo and José Luis Sánchez},

url = {https://linkinghub.elsevier.com/retrieve/pii/S0016236122027946},

doi = {10.1016/J.FUEL.2022.125970},

issn = {0016-2361},

year  = {2023},

date = {2023-01-01},

urldate = {2023-01-01},

journal = {Fuel},

volume = {332},

pages = {125970},

publisher = {Elsevier},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Fortea2021,

title = {An Insight into the Separation of 1,2-Propanediol, Ethylene Glycol, Acetol and Glycerol from an Aqueous Solution by Adsorption on Activated Carbon},

author = {Jorge Fortea and Lucía García and Joaquín Ruiz and Miriam Oliva and Jesús Arauzo},

url = {https://www.mdpi.com/2227-9717/9/8/1438/htm https://www.mdpi.com/2227-9717/9/8/1438},

doi = {10.3390/PR9081438},

issn = {2227-9717},

year  = {2021},

date = {2021-08-01},

journal = {Processes 2021, Vol. 9, Page 1438},

volume = {9},

number = {8},

pages = {1438},

publisher = {Multidisciplinary Digital Publishing Institute},

abstract = {Glycerol conversion processes such as aqueous phase reforming and hydrogenolysis generate value-added compounds highly diluted in water. Because distillation is a high energy demand separation step, adsorption could be an attractive alternative to recover these chemicals. Adsorption isotherms of 1,2-propanediol, acetol, ethylene glycol and glycerol onto activated carbon were determined by batch adsorption experiments. These isotherms were fitted slightly better to the Freundlich equation than to the Langmuir equation. Acetol is the compound with the highest adsorption at concentrations smaller than 1 M. Properties of the adsorbate such as the −OH group number, chain length, molecular size and dipole moment, besides characteristics of the adsorbent such as the surface area, oxygen and ash content, are considered to explain the observed results. Moreover, adsorption experiments were performed with mixtures of compounds and it was determined that the molar amount adsorbed is less than predicted from the adsorption isotherms of the individual compounds treated separately. In addition, the influence of the activated carbon thermal pre-treatment temperature on the adsorption capacity has been studied, the optimum being 800 °C. An analysis of the influence of the activated carbon characteristics showed that the most important parameters are the total pore volume and the ash content.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Macias2021,

title = {Modeling a fluidized bed reactor by integrating various scales: Pore, particle, and reactor},

author = {Robert J Macías and Juan C Maya and Farid Chejne and Zainab Afailal and Jesús Arauzo},

url = {https://doi.org/10.1002/aic.17199},

doi = {10.1002/aic.17199},

issn = {15475905},

year  = {2021},

date = {2021-05-01},

journal = {AIChE Journal},

volume = {67},

number = {5},

pages = {44842--210},

publisher = {John Wiley and Sons Inc},

abstract = {This work proposes a novel population-balance based model for a bubbling fluidized bed reactor. This model considers two continuum phases: bubble and emulsion. The evolution of the bubble size distribution was modeled using a population balance, considering both axial and radial motion. This sub-model involves a new mathematical form for the aggregation frequency, which predicts the migration of bubbles from the reactor wall toward the reactor center. Additionally, reacting particles were considered as a Lagrangian phase, which exchanges mass with emulsion phases. For each particle, the variation of the pore size distribution was also considered. The model presented here accurately predicted the experimental data for biochar gasification in a lab-scale bubbling fluidized bed reactor. Finally, the aggregation frequency is shown to serve as a scaling parameter.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{Raso2021,

title = {Aqueous phase hydrogenolysis of glycerol over Ni/Al-Fe catalysts without external hydrogen addition},

author = {Raquel Raso and Lucía García and Joaquín Ruiz and Miriam Oliva and Jesús Arauzo},

doi = {10.1016/j.apcatb.2020.119598},

issn = {09263373},

year  = {2021},

date = {2021-04-01},

journal = {Applied Catalysis B: Environmental},

volume = {283},

pages = {119598},

publisher = {Elsevier B.V.},

abstract = {The present work studied the aqueous phase hydrogenolysis (APH) of glycerol (a by-product of biodiesel manufacturing) without external hydrogen addition to produce value-added products. A series of catalysts based on 28 molar % of Ni were prepared through co-precipitation by changing the Al/Fe molar ratio. The calcined and used catalysts were characterized by several techniques (ICP-OES, N2-physisorption, XRD, H2-TPR, NH3-TPD, FESEM and STEM). This work examines the effects of the molar ratio of Al/Fe on the physicochemical characteristics of Ni/Al-Fe catalysts and during the APH of glycerol. All the catalysts showed low carbon yields to gases and high carbon yields to liquid products, mainly 1,2-propanediol, acetol and ethylene glycol. Ni/Al3Fe1 catalyst gave the best performance in the APH of glycerol: the highest glycerol conversion (42.31 %), carbon yield to gases (6.57 %) and carbon yield to liquids (30.45%). 1,2-propanediol was the liquid product with the highest carbon selectivity (70.89%).},

keywords = {},

pubstate = {published},

tppubtype = {article}

}