Hydrothermal liquefaction of oak wood was carried out in tubular micro reactors at different temperatures (280–330 °C), reaction times (10–30 min), and catalyst loads (10–50 wt%) using metallic Ni catalysts. For the first time, to enhance the catalytic activity of Ni particles, a coating technique producing a nanostructured surface was used, maintaining anyway the micrometric dimension of the catalyst, necessary for an easier recovery. The optimum conditions for non-catalytic liquefaction tests was determined to be 330 °C and 10 min with the bio-crude yield of 32.88%. The addition of metallic Ni catalysts (Commercial Ni powder and nanostructured surface-modified Ni particle) increased the oil yield and inhibited the char formation through hydrogenation action. Nano modified Ni catalyst resulted in a better catalytic activity in terms of bio-crude yield (36.63%), thanks to the higher surface area due to the presence of flower-like superficial nanostructures. Also, bio-crude quality resulted improved with the use of the two catalysts, with a decrease of C/H ratio and a corresponding increase of the high heating value (HHV). The magnetic recovery of the catalysts and their reusability was also investigated with good results.

Unsupported Ni metal catalyst in hydrothermal liquefaction of oak wood. Effect of catalyst surface modification / de Caprariis, B.; Bracciale, M. P.; Bavasso, I.; Chen, G.; DAMIZIA, MARTINA; Genova, V.; Marra, F.; Paglia, L.; Pulci, G.; Scarsella, M.; Tai, L.; De Filippis, P.. - In: SCIENCE OF THE TOTAL ENVIRONMENT. - ISSN 0048-9697. - 709:(2020). [10.1016/j.scitotenv.2019.136215]

Unsupported Ni metal catalyst in hydrothermal liquefaction of oak wood. Effect of catalyst surface modification

de Caprariis, B.
Primo
;
Bracciale, M. P.;Bavasso, I.;DAMIZIA, MARTINA;Genova, V.;Marra, F.;Paglia, L.;Pulci, G.;Scarsella, M.;Tai, L.
;
De Filippis, P.
Ultimo
2020

Abstract

Hydrothermal liquefaction of oak wood was carried out in tubular micro reactors at different temperatures (280–330 °C), reaction times (10–30 min), and catalyst loads (10–50 wt%) using metallic Ni catalysts. For the first time, to enhance the catalytic activity of Ni particles, a coating technique producing a nanostructured surface was used, maintaining anyway the micrometric dimension of the catalyst, necessary for an easier recovery. The optimum conditions for non-catalytic liquefaction tests was determined to be 330 °C and 10 min with the bio-crude yield of 32.88%. The addition of metallic Ni catalysts (Commercial Ni powder and nanostructured surface-modified Ni particle) increased the oil yield and inhibited the char formation through hydrogenation action. Nano modified Ni catalyst resulted in a better catalytic activity in terms of bio-crude yield (36.63%), thanks to the higher surface area due to the presence of flower-like superficial nanostructures. Also, bio-crude quality resulted improved with the use of the two catalysts, with a decrease of C/H ratio and a corresponding increase of the high heating value (HHV). The magnetic recovery of the catalysts and their reusability was also investigated with good results.
2020
hydrothermal liquefaction; biomass; bio-crude; heterogeneous catalysts; Ni coating
01 Pubblicazione su rivista::01a Articolo in rivista
Unsupported Ni metal catalyst in hydrothermal liquefaction of oak wood. Effect of catalyst surface modification / de Caprariis, B.; Bracciale, M. P.; Bavasso, I.; Chen, G.; DAMIZIA, MARTINA; Genova, V.; Marra, F.; Paglia, L.; Pulci, G.; Scarsella, M.; Tai, L.; De Filippis, P.. - In: SCIENCE OF THE TOTAL ENVIRONMENT. - ISSN 0048-9697. - 709:(2020). [10.1016/j.scitotenv.2019.136215]
File allegati a questo prodotto
File Dimensione Formato  
De-Caprariis_Unsupported-Ni-metal_preprint_2020.pdf

Open Access dal 25/12/2019

Note: Post-prnt
Tipologia: Documento in Pre-print (manoscritto inviato all'editore, precedente alla peer review)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 4.29 MB
Formato Adobe PDF
4.29 MB Adobe PDF
De-Caprariis_Unsupported-Ni-metal_2020.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.3 MB
Formato Adobe PDF
1.3 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1342988
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 34
  • ???jsp.display-item.citation.isi??? 27
social impact