Revised_paper_final_Wagner.pdf (1.72 MB)
Zeolite Y supported nickel phosphide catalysts for the hydrodenitrogenation of quinoline as a proxy for crude bio-oils from hydrothermal liquefaction of microalgae
journal contribution
posted on 2019-07-22, 11:22 authored by Jonathan L. Wagner, Emyr Jones, Asel Sartbaeva, Sean A. Davis, Laura Torrente-Murciano, Christopher J. Chuck, Valeska P. TingThis work demonstrates the potential of zeolite Y supported nickel phosphide materials as
highly active catalysts for the upgrading of bio-oil as improved alternative to noble metal and
transition metal sulphide systems. Our systematic work studied the effect of using different
counterions (NH4
+
, H+
, K+ and Na+
) and Si/Al ratios (2.56 and 15) of the zeolite Y. It
demonstrates that whilst the zeolite counterion itself has little impact on the catalytic activity
of the bare Y-zeolite, it has a strong influence on the activity of the resulting nickel
phosphide catalysts. This effect is related to the nature of the nickel phases formed during the
synthesis process Zeolites containing K+
and Na+
favour the formation of a mixed
Ni12P5/Ni2P phase, H+ Y produces both Ni2P and metallic Ni, whereas NH4
+ Y produces pure
Ni2P, which can be attributed to the strength of the phosphorus-aluminium interaction and the
metal reduction temperature. Using quinoline as a model for the nitrogen-containing
compounds in bio-oils, it is shown that the hydrodenitrogenation activity increases in the
order Ni2P > Ni0 > Ni12P5. While significant research has been dedicated to the development of bio-oils produced by thermal liquefaction of biomass, surprisingly little work has been
conducted on the subsequent catalytic upgrading of these oils to reduce their heteroatom
content and enable processing in conventional petrochemical refineries. This work provides
important insights for the design and deployment of novel active transition metal catalysts to
enable the incorporation of bio-oils into refineries.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Dalton TransactionsVolume
47Issue
4Pages
1189 - 1201Citation
WAGNER, J.L. ... et al., 2018. Zeolite Y supported nickel phosphide catalysts for the hydrodenitrogenation of quinoline as a proxy for crude bio-oils from hydrothermal liquefaction of microalgae. Dalton Transactions, 47(4), pp. 1189 - 1201.Publisher
© Royal Society of ChemistryVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-12-18Publication date
2018Notes
This paper was accepted for publication in the journal Dalton Transactions and the definitive published version is available at https://doi.org/10.1039/C7DT03318DISSN
1477-9226eISSN
1477-9234Publisher version
Language
- en