Version 1
: Received: 18 July 2024 / Approved: 18 July 2024 / Online: 18 July 2024 (13:45:27 CEST)
How to cite:
Carrasco Diaz, A.; Abdelouahed, L.; Brodu, N.; Montes-Jiménez, V.; TAOUK, B. Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoygenation, a Review Focused on Catalysts, Model Molecules, Deactivation and Reaction Routes. Preprints2024, 2024071495. https://doi.org/10.20944/preprints202407.1495.v1
Carrasco Diaz, A.; Abdelouahed, L.; Brodu, N.; Montes-Jiménez, V.; TAOUK, B. Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoygenation, a Review Focused on Catalysts, Model Molecules, Deactivation and Reaction Routes. Preprints 2024, 2024071495. https://doi.org/10.20944/preprints202407.1495.v1
Carrasco Diaz, A.; Abdelouahed, L.; Brodu, N.; Montes-Jiménez, V.; TAOUK, B. Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoygenation, a Review Focused on Catalysts, Model Molecules, Deactivation and Reaction Routes. Preprints2024, 2024071495. https://doi.org/10.20944/preprints202407.1495.v1
APA Style
Carrasco Diaz, A., Abdelouahed, L., Brodu, N., Montes-Jiménez, V., & TAOUK, B. (2024). Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoygenation, a Review Focused on Catalysts, Model Molecules, Deactivation and Reaction Routes. Preprints. https://doi.org/10.20944/preprints202407.1495.v1
Chicago/Turabian Style
Carrasco Diaz, A., Vicente Montes-Jiménez and Bechara TAOUK. 2024 "Upgrading of Pyrolysis Bio-Oil by Catalytic Hydrodeoygenation, a Review Focused on Catalysts, Model Molecules, Deactivation and Reaction Routes" Preprints. https://doi.org/10.20944/preprints202407.1495.v1
Abstract
Biomass can be converted into energy/fuel by different techniques, such as pyrolysis, gasification, and others. In the case of pyrolysis, biomass can be converted into a crude bio-oil around 50-75% yield. However, the direct use of this crude bio-oil is impractical due to its high content of oxygenated compounds, which provide inferior properties compared to those of fossil-derived bio-oil, such as petroleum. Consequently, bio-oil needs to be upgraded by physical processes (filtration, emulsification, among others) and/or chemical processes (esterification, cracking, HDO, among others). In contrast, HDO can effectively increase the calorific value and improve the acidity and viscosity of bio-oils through reaction pathways such as cracking, decarbonylation, decarboxylation, hydrocracking, hydrodeoxygenation and hydrogenation where catalysts play a crucial role. This article first focuses on the general aspects of biomass, subsequent bio-oil production, its properties, and the various methods of upgrading pyrolytic bio-oil to improve its calorific value, pH, viscosity, degree of deoxygenation (DOD), and other attributes. Secondly, particular emphasis is placed on the process of converting model molecules and bio-oil via HDO using catalysts based on nickel and nickel combined with other active elements. Through these phases, readers can gain a deeper understanding of the HDO process and the reaction mechanisms involved. Finally, the different equipment used to obtain an improved HDO product from bio-oil is discussed, providing valuable insights for the practical application of this reaction in pyrolysis bio-oil production.
Chemistry and Materials Science, Chemical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
