Catalytic investigation of in situ generated Ni metal nanoparticles for tar conversion during biomass pyrolysis

Richardson Y., Motuzas J., Julbe A., Volle G. and Blin J. (2013) Catalytic investigation of in situ generated Ni metal nanoparticles for tar conversion during biomass pyrolysis. Journal of Physical Chemistry C, 117 45: 23812-23831. doi:10.1021/jp408191p


Author Richardson Y.
Motuzas J.
Julbe A.
Volle G.
Blin J.
Title Catalytic investigation of in situ generated Ni metal nanoparticles for tar conversion during biomass pyrolysis
Journal name Journal of Physical Chemistry C   Check publisher's open access policy
ISSN 1932-7447
1932-7455
Publication date 2013-11
Year available 2013
Sub-type Article (original research)
DOI 10.1021/jp408191p
Open Access Status
Volume 117
Issue 45
Start page 23812
End page 23831
Total pages 20
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2014
Language eng
Formatted abstract
In order to promote process intensification in syngas production from biomass gasification, our research team has already considered the integration of transition metal-based nanocatalysts in the biomass feedstock through its impregnation with metal salt aqueous solutions. The purpose of this work is to provide new insights into the complex physicochemical and catalytic mechanisms involved in this catalytic pathway from nickel salt. Applying a primary vacuum during impregnation allowed the rate of nickel insertion to be optimized and the generation of strong interactions between the metal cations and the lignocellulosic matrix. During biomass pyrolysis, Ni0 nanoparticles (NPs) form in situ below 500 C through carbothermal reduction and provide the active sites for adsorption of aromatic hydrocarbons and subsequent catalytic conversion. In order to test whether it was possible to improve the catalytic efficiency of Ni0 NPs by making them available right from the pyrolysis onset, some preformed Ni0 NPs were inserted into the biomass prior to pyrolysis. The in situ generated Ni0 NPs exhibit higher catalytic efficiency, particularly for aromatic tar conversion, than preformed Ni0 NPs. The high decrease in hard-to-destroy aromatic hydrocarbons formation during pyrolysis is of particular interest in the overall gasification process. The proposed catalytic strategy reveals promising for simplifying the cleaning up of the producer gas.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Non HERDC
 
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