Hydrotreating is an effective method for bio-crude upgrading. However, the high cost of catalysts and gaseous hydrogen consumption limits its application. In this research, oak wood hydrothermal liquefaction bio-crude upgrading was conducted by using Zn as heterogeneous hydrogen producer and low-cost Ni supported Y zeolite synthesized from rice husk as catalyst. The Y zeolite was obtained by two-step synthetic route, using different Tetramethylammonium hydroxide (TMAOH)/silica mole ratios of 0, 0.03 and 0.08. Synthesized Y zeolite showed better performance than commercial one due to the higher total acid sites (24–28% higher). Compared with template-free Y zeolite, the introduction of TMAOH template brings more mesopore structure to the synthesized zeolite, improving its catalytic activity. The yield of upgraded oil increased from 65.5% of blank upgrading test to 80.0% of the synthesized 10%Ni/HY (0.08), and the coke amount reduced from 14.3% to 3.9%. The H/C ratio increased, and the O/C ratio decreased, consequently the higher heating value (HHV) raised from 30.04 to 33.13 MJ/kg. The area percentages of hydrogenation products: cyclopentanones and hydrogenated lignin-derived compounds increased in the catalytic upgraded oil samples consuming furan derivatives and lignin-derived compounds. Deactivation of the synthesized catalyst was observed due to the zeolite structure collapse, Ni active site oxidation, coke deposition and presence of ZnO impurity. The one-pot catalytic hydrothermal treatment of oak wood was also conducted with interesting result, bio-crude yield of 39.0% and HHV of 32.61 MJ/kg, which greatly simplified the process by combining the bio-crude production and upgrading steps together.

Hydrotreating of oak wood bio-crude using heterogeneous hydrogen producer over Y zeolite catalyst synthesized from rice husk / Hamidi, R.; Tai, L.; Paglia, L.; Scarsella, M.; Damizia, M.; De Filippis, P.; Musivand, S.; de Caprariis, B.. - In: ENERGY CONVERSION AND MANAGEMENT. - ISSN 0196-8904. - 255:(2022). [10.1016/j.enconman.2022.115348]

Hydrotreating of oak wood bio-crude using heterogeneous hydrogen producer over Y zeolite catalyst synthesized from rice husk

Tai L.;Paglia L.;Scarsella M.;Damizia M.;De Filippis P.;Musivand S.;de Caprariis B.
2022

Abstract

Hydrotreating is an effective method for bio-crude upgrading. However, the high cost of catalysts and gaseous hydrogen consumption limits its application. In this research, oak wood hydrothermal liquefaction bio-crude upgrading was conducted by using Zn as heterogeneous hydrogen producer and low-cost Ni supported Y zeolite synthesized from rice husk as catalyst. The Y zeolite was obtained by two-step synthetic route, using different Tetramethylammonium hydroxide (TMAOH)/silica mole ratios of 0, 0.03 and 0.08. Synthesized Y zeolite showed better performance than commercial one due to the higher total acid sites (24–28% higher). Compared with template-free Y zeolite, the introduction of TMAOH template brings more mesopore structure to the synthesized zeolite, improving its catalytic activity. The yield of upgraded oil increased from 65.5% of blank upgrading test to 80.0% of the synthesized 10%Ni/HY (0.08), and the coke amount reduced from 14.3% to 3.9%. The H/C ratio increased, and the O/C ratio decreased, consequently the higher heating value (HHV) raised from 30.04 to 33.13 MJ/kg. The area percentages of hydrogenation products: cyclopentanones and hydrogenated lignin-derived compounds increased in the catalytic upgraded oil samples consuming furan derivatives and lignin-derived compounds. Deactivation of the synthesized catalyst was observed due to the zeolite structure collapse, Ni active site oxidation, coke deposition and presence of ZnO impurity. The one-pot catalytic hydrothermal treatment of oak wood was also conducted with interesting result, bio-crude yield of 39.0% and HHV of 32.61 MJ/kg, which greatly simplified the process by combining the bio-crude production and upgrading steps together.
2022
bio-crude; hydrothermal liquefaction; rice husk; upgrading; Y zeolite
01 Pubblicazione su rivista::01a Articolo in rivista
Hydrotreating of oak wood bio-crude using heterogeneous hydrogen producer over Y zeolite catalyst synthesized from rice husk / Hamidi, R.; Tai, L.; Paglia, L.; Scarsella, M.; Damizia, M.; De Filippis, P.; Musivand, S.; de Caprariis, B.. - In: ENERGY CONVERSION AND MANAGEMENT. - ISSN 0196-8904. - 255:(2022). [10.1016/j.enconman.2022.115348]
File allegati a questo prodotto
File Dimensione Formato  
Hamidi_Hydrotreating-oak_2022.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 8.05 MB
Formato Adobe PDF
8.05 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/11573/1620452
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 7
social impact