Catalytic hydrotreatment of pyrolysis-oil with bimetallic Ni-Cu catalysts supported by several mono-oxide and mixed-oxide materials

Weerawan Laosiripojana, Worapon Kiatkittipong, Chularat Sakdaronnarong, Suttichai Assabumrungrat and Navadol Laosiripojana

Renewable Energy, 2019, vol. 135, issue C, 1048-1055

Abstract: Catalytic hydrotreatment of pyrolysis-oil from biomass is an important process to improve oil characteristics for use as liquid fuel. Bimetallic NiCu catalysts are currently attractive for use in hydrotreatment process due to its highly active for hydrogenation, hydrodeoxygenation and hydrocracking reactions. In this study, NiCu catalyst supported by several mono-oxide (i.e. γ-Al2O3, ZrO2, SBA-15 and MCM-41) and mixed-oxide (ZrO2-SBA-15 and ZrO2-MCM-41) materials was tested for hydrotreatment of guaiacol (as pyrolysis-oil model compound) and pyrolysis-oil from eucalyptus under several reaction temperatures (200–350 °C) and times (1–6 h). Among all catalysts, NiCu/ZrO2-SBA-15 showed the highest activity toward the hydrotreatment of guaiacol, from which hydrodeoxygenation yield of 87.3% with relatively low carbon deposition (3.4 wt%) was achieved from the reaction at 325 °C for 2 h. For the hydrotreatment of pyrolysis-oil in the presence of NiCu/ZrO2-SBA-15, ungraded oil with favorable qualities (i.e. high H/C ratio and low thermogravimetric residue) was obtained from the reaction at 350 °C for 3 h. After reaction test, catalyst regeneration and reusability were also studied. The regeneration of spent NiCu/ZrO2-SBA-15 by oxidation with O2 at 600 °C for 3 h can remove most of carbon species from catalyst surface with insignificant change in catalyst surface properties. In addition, the regenerated catalyst can be reused for at least 5 reaction cycles without significant deactivation observed.

Keywords: Hydrotreatment; Pyrolysis oil; NiCu catalyst; SBA-15 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0960148118315167
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:135:y:2019:i:c:p:1048-1055

DOI: 10.1016/j.renene.2018.12.069

Access Statistics for this article

Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides

More articles in Renewable Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().