Skip to content

Research at St Andrews

Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation

Research output: Contribution to journalArticlepeer-review

Standard

Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation. / Umar, Ahmed; Neagu, Dragos; Irvine, John T.S.

In: Biofuel Research Journal, Vol. 8, No. 1, 01.03.2021, p. 1342-1350.

Research output: Contribution to journalArticlepeer-review

Harvard

Umar, A, Neagu, D & Irvine, JTS 2021, 'Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation', Biofuel Research Journal, vol. 8, no. 1, pp. 1342-1350. https://doi.org/10.18331/BRJ2021.8.1.5

APA

Umar, A., Neagu, D., & Irvine, J. T. S. (2021). Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation. Biofuel Research Journal, 8(1), 1342-1350. https://doi.org/10.18331/BRJ2021.8.1.5

Vancouver

Umar A, Neagu D, Irvine JTS. Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation. Biofuel Research Journal. 2021 Mar 1;8(1):1342-1350. https://doi.org/10.18331/BRJ2021.8.1.5

Author

Umar, Ahmed ; Neagu, Dragos ; Irvine, John T.S. / Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation. In: Biofuel Research Journal. 2021 ; Vol. 8, No. 1. pp. 1342-1350.

Bibtex - Download

@article{df22c81f3d1e4955bdbfea31132b43ec,
title = "Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation",
abstract = "Environmental problems associated with the use of fossil fuels and increase in energy demands due to rise in population and rapid industrialisation, are the driving forces for energy. Catalytic conversion of biomass to renewable energies is among the promising approaches to materialize the above. This requires development of robust catalysts to suppress deactivation due to carbon deposition and agglomeration. In this work, surface properties and chemistry such as exsolution of B-site metal catalyst nanoparticles, particle size and distribution, as well as catalyst-support interactions were tailored through the use of alkaline dopants to enhance catalytic behaviour in valorisation of glycerol. The incorporation of alkaline metals into the lattice of an A-site deficient perovskite modified the surface basic properties and morphology with a consequent robust catalyst-support interaction. This resulted in promising catalytic behaviour of the materials where hydrogen selectivity of over 30% and CO selectivity of over 60% were observed. The catalyst ability to reduce fouling of the catalyst surface as a result of carbon deposition during operation was also profound due to the robust catalyst-support interaction occurring at the exsolved nanoparticles due to their socketing and the synergy between the dopant metals in the alloy in perovskite catalyst systems. In particular, one of the designed systems, La0.4Sr0.2Ca0.3Ni0.1Ti0.9O3±δ, displayed almost 100% resistance to carbon deposition. Therefore, lattice rearrangement using exsolution and choice of suitable dopant could be tailored to improve catalytic performance.",
keywords = "Surface chemistry, Steam reforming, Syngas, Biofuel, Fuel cell",
author = "Ahmed Umar and Dragos Neagu and Irvine, {John T.S.}",
note = "The authors would like to thank the Petroleum Technology Development Fund (Nigeria) for funding this research and University of St Andrews (Scotland, UK) for the opportunity to carry out the research.",
year = "2021",
month = mar,
day = "1",
doi = "10.18331/BRJ2021.8.1.5",
language = "English",
volume = "8",
pages = "1342--1350",
journal = "Biofuel Research Journal",
issn = "2292-8782",
publisher = "Green Wave Publishing of Canada",
number = "1",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Alkaline modified A-site deficient perovskite catalyst surface with exsolved nanoparticles and functionality in biomass valorisation

AU - Umar, Ahmed

AU - Neagu, Dragos

AU - Irvine, John T.S.

N1 - The authors would like to thank the Petroleum Technology Development Fund (Nigeria) for funding this research and University of St Andrews (Scotland, UK) for the opportunity to carry out the research.

PY - 2021/3/1

Y1 - 2021/3/1

N2 - Environmental problems associated with the use of fossil fuels and increase in energy demands due to rise in population and rapid industrialisation, are the driving forces for energy. Catalytic conversion of biomass to renewable energies is among the promising approaches to materialize the above. This requires development of robust catalysts to suppress deactivation due to carbon deposition and agglomeration. In this work, surface properties and chemistry such as exsolution of B-site metal catalyst nanoparticles, particle size and distribution, as well as catalyst-support interactions were tailored through the use of alkaline dopants to enhance catalytic behaviour in valorisation of glycerol. The incorporation of alkaline metals into the lattice of an A-site deficient perovskite modified the surface basic properties and morphology with a consequent robust catalyst-support interaction. This resulted in promising catalytic behaviour of the materials where hydrogen selectivity of over 30% and CO selectivity of over 60% were observed. The catalyst ability to reduce fouling of the catalyst surface as a result of carbon deposition during operation was also profound due to the robust catalyst-support interaction occurring at the exsolved nanoparticles due to their socketing and the synergy between the dopant metals in the alloy in perovskite catalyst systems. In particular, one of the designed systems, La0.4Sr0.2Ca0.3Ni0.1Ti0.9O3±δ, displayed almost 100% resistance to carbon deposition. Therefore, lattice rearrangement using exsolution and choice of suitable dopant could be tailored to improve catalytic performance.

AB - Environmental problems associated with the use of fossil fuels and increase in energy demands due to rise in population and rapid industrialisation, are the driving forces for energy. Catalytic conversion of biomass to renewable energies is among the promising approaches to materialize the above. This requires development of robust catalysts to suppress deactivation due to carbon deposition and agglomeration. In this work, surface properties and chemistry such as exsolution of B-site metal catalyst nanoparticles, particle size and distribution, as well as catalyst-support interactions were tailored through the use of alkaline dopants to enhance catalytic behaviour in valorisation of glycerol. The incorporation of alkaline metals into the lattice of an A-site deficient perovskite modified the surface basic properties and morphology with a consequent robust catalyst-support interaction. This resulted in promising catalytic behaviour of the materials where hydrogen selectivity of over 30% and CO selectivity of over 60% were observed. The catalyst ability to reduce fouling of the catalyst surface as a result of carbon deposition during operation was also profound due to the robust catalyst-support interaction occurring at the exsolved nanoparticles due to their socketing and the synergy between the dopant metals in the alloy in perovskite catalyst systems. In particular, one of the designed systems, La0.4Sr0.2Ca0.3Ni0.1Ti0.9O3±δ, displayed almost 100% resistance to carbon deposition. Therefore, lattice rearrangement using exsolution and choice of suitable dopant could be tailored to improve catalytic performance.

KW - Surface chemistry

KW - Steam reforming

KW - Syngas

KW - Biofuel

KW - Fuel cell

UR - https://www.biofueljournal.com/jufile?ar_sfile=1258493

U2 - 10.18331/BRJ2021.8.1.5

DO - 10.18331/BRJ2021.8.1.5

M3 - Article

VL - 8

SP - 1342

EP - 1350

JO - Biofuel Research Journal

JF - Biofuel Research Journal

SN - 2292-8782

IS - 1

ER -

Related by author

  1. Platinum incorporation into titanate perovskites to deliver emergent active and stable platinum nanoparticles

    Kothari, M., Jeon, Y., Miller, D. N., Pascui, A. E., Wails, D., Ramos, S., Chadwick, A. & Irvine, J. T. S., 24 May 2021, In: Nature Chemistry.

    Research output: Contribution to journalArticlepeer-review

  2. Time-resolved in-situ X-ray diffraction study of CaO and CaO:Ca3Al2O6 composite catalysts for biodiesel production

    Bonaccorso, A. D., Papargyriou, D., Fuente Cuesta, A., Magdysyuk, O. V., Michalik, S., Connolley, T., Payne, J. L. & Irvine, J. T. S., 21 May 2021, (Accepted/In press) In: Journal of Physics: Energy. In press

    Research output: Contribution to journalArticlepeer-review

  3. Enhancing electrochemical CO2 reduction using Ce(Mn,Fe)O2 with La(Sr)Cr(Mn)O3 cathode for high-temperature solid oxide electrolysis cells

    Lee, S., Kim, M., Lee, K. T., Irvine, J. T. S. & Shin, T. H., 12 May 2021, In: Advanced Energy Materials. Early View, 12 p., 2100339.

    Research output: Contribution to journalArticlepeer-review

  4. Durability of La0.20Sr0.25Ca0.45TiO3-based SOFC anodes: identifying sources of degradation in Ni and Pt/ceria co-impregnated fuel electrode microstructures

    Price, R., Weissen, U., Grolig, J. G., Cassidy, M., Mai, A. & Irvine, J. T. S., 28 Apr 2021, In: Journal of Materials Chemistry A. 9, 16, p. 10404-10418

    Research output: Contribution to journalArticlepeer-review

  5. Achieving strong coherency for a composite electrode via one-pot method with enhanced electrochemical performance in reversible solid oxide cells

    Tian, Y., Wang, W., Liu, Y., Naden, A., Xu, M., Wu, S., Chi, B., Pu, J. & Irvine, J. T. S., 19 Mar 2021, In: ACS Catalysis. 11, 6, p. 3704-3714 11 p.

    Research output: Contribution to journalArticlepeer-review

ID: 273233697

Top