Research interest

• Fischer-Tropsch Catalysis
• CO₂ hydrogenation
• Shaped carbon materials, COFs and MOFs
• Environmental Catalysis: SO₂ Reduction
• Environmental issues relating to heavy metals, including recovery of REEs
• Environmental catalysis
• Open Distance e-Learning
  

• Heterogeneous Catalysis

1. Macheli; G.M. Leteba; B.P. Doyle; L.L. Jewell; E. Van Steen (2024) Modulating CO-hydrogenation Activity through Silane Functionalization of Cobalt Catalysts. Applied Catalysis A: General. 685, 119874. doi.org/10.1016/j.apcata.2024.119874.
2. Zhang; M. Di; L. Jewell; X. Liu; H. Liu (2024) Schiff-base nanoarchitectonics of covalent organic framework for regulation of photocatalytic hydrogen evolution: Exploration of prime factors in structural isomers. International Journal of Hydrogen Energy. 51, Part B, 857-864. Doi.org/10.1016/j.ijhydene.2023.09.013.
3. Ngouana Moafor; L. Macheli; G. Kabongo; G. Nyongombe; P. Kenfack Tsobnang; J. Lambi; L. Jewell (2024) Supercapacitive performance of cobalt-loaded amorphous zeolite for energy storage applications. Microporous and Mesoporous Materials. 363, 112784. Doi.org/10.1016/j.micromeso.2023.112784.
4. Xu; L. Mguni; Y. Yao; D. Hildebrandt; L.L. Jewell; X. Liu (2024) Machine Learning-Assisted High Throughput Screening of MOFs for Efficient Adsorption and Separation of CF₄/N₂. Journal of Cleaner Production. 461, 142634. doi.org/10.1016/j.jclepro.2024.142634.
5. S. Zong; X. Zhao; L.L. Jewell; Y. Zhang; X. Liu (2024) Advances and challenges with SOEC high temperature co-electrolysis of CO2/H2O: materials development and technological design. Carbon Capture Science & Technology. 12, 100234. Doi.org/10.1016/j.ccst-D-24-00078.
6. Cheng; C. Tang; C. Yan; J. Du; A. Chen, X. Liu; L. Jewell; Q. Zhang (2023) Preparation of porous carbon spheres and their application as anode materials for lithium-ion batteries: A review; Materials Today Nano. Doi.org.10.1016/j.mtnano.2023.100321.
7. Hu; E. Tang; S. Wang; M. Yuan; S. Liu; X. Chu; X. Xing; X. Liu; L. Jewell (2023) Characterization of chestnut starch acetate with different degrees of substitution. International Journal of Food Engineering. Doi.org/10.1515/ijfe-2022-0320.
8. Wang; N. Hu; E. Tang; S. Yang; X. Liu; L. Jewell (2023) Optimization of Porous Phosporylated Chestnut Starch Synthesis by Response Surface Methodology and Characterization of its Properties. Starch. Doi.org/10.1002/start.202200179. 75, 2200179 (10 pages).
9. Moafor; P. Kenfack Tsobnang; K. Oyedotun; R. Lontio Fomekong; G. Kabongo; L. Macheli; J. Lambi; L. Jewell (2023) Effect of SiO2/Al2O3 Ratio on the electrochemical performance of amorphous zeolite loaded with cobalt grown via steam-assisted crystallization method. RSC Advances. 13, 31, 21393-21402. Doi.org/10.1039/d3ra03268j.
10. Zong; A.Chen; M. Wiśniewski; L. Macheli; L.L. Jewell; D. Hildebrandt; X. Liu (2023) Effect of temperature and pressure on electrochemical CO₂ reduction: a mini review. Carbon Capture Science & Technology 8, 100133. Doi.org/10.1016/j.ccst.2023.100133.
11. COL Mbuya, LL Jewell, TS Ntelane, MS Scurrell (2022) The effect of microwave irradiation on heterogeneous catalysts for Fischer-Tropsch synthesis. Reviews in Chemical Engineering. Doi.org/10.1515/revce-2020-0017, 38 (6) 721-736.
12. O.L. Mbuya, C.G. Okoye-Chine, K. Ramutsindela, L.L. Jewell (2022) Microwave modification of cobalt supported on beta silicon carbide catalyst for Fischer-Tropsch synthesis. Reaction Kinetics, Mechanisms and Catalysis, 135, 287-301. Doi.org/10.1007/s11144-021-02129-y.
13. O.L. Mbuya, C.G. Okoye-Chine, K. Ramutsindela, L.L. Jewell, M.S. Scurrell (2022) Microwave modification of iron supported on beta silicon carbide catalyst for Fischer-Tropsch synthesis. Reaction Chemistry & Engineering, 7, 1307-1314. Doi.org/10.1039/D2RE00024E.
14. Zong; J. Du; A. Chen; X. Gao; X. Liu; L.L. Jewell (2022) Silica-assisted strategy towards hierarchically porous carbon nanofibers for supercapacitor; Journal of Power Sources, 545, 15 October 2022, 231922. Doi.org/10.1016/j.jpowsour.2022.231922.
15. S. Zong; J. Du; A. Chen; X. Gao; K. O. Otun; X. Liu; L.L. Jewell (2022) N-doped crumpled carbon nanotubes as advanced electrode material for supercapacitor; Journal of Alloys and Compounds 928, 167222. Doi.org/10.1016/j.jallcom.2022.167222.
16. Phaahlamohlaka, TN, Kumi, DO, Dlamini, MW, Forbes, R, Jewell, LL, Billing, DG & Coville, NJ. 2017. Effects of Co and Ru intimacy in Fischer-Tropsch catalysts using hollow carbon sphere supports: assessment of the hydrogen spillover processes. ACS Catalysis 7(3):1568–1578. DOI: 10.1021/acscatal.6b03102.
17. Phaahlamohlaka, TN, Dlamini, MW, Mogodi, MW, Kumi, DO, Jewell, LL, Billing, DG & Coville, NJ. 2018. A sinter resistant Co Fischer-Tropsch catalyst promoted with Ru and supported on titania encapsulated by mesoporous silica. Applied Catalysis A: General 552:129–137. DOI:10.1016/j.apcata.2017.12.015.
18. Ngwenya, T, Nongwe, I & Jewell, LL. 2018. Reduction of sulphur dioxide using carbon monoxide over gold supported catalysts. Gold Bulletin 51:153–162. https://doi.org/10.1007/s13404-018-0235-2.
19. Gorimbo, J, Taenzana, B, Muleja, AA, Kuvarega, AT & Jewell, LL. 2018. Adsorption of cadmium, nickel and lead ions: equilibrium, kinetic and selectivity studies on modified clinoptilolites from the USA and RSA. Environmental Science and Pollution Research 25:30962–30978. DOI:10.1007/s11356-018-2992-0.
20. Dlamini, MW, Phaahlamohlaka, TN, Kumi, DO, Forbes, R, Jewell, LL & Coville, NJ. 2020. Post doped nitrogen-decorated hollow carbon spheres as a support for Co Fischer-Tropsch catalysts. Catalysis Today 342:99–110. Available at: https://doi.org/10.1016/j.cattod.2019.01.070.
21. Phaahlamohlaka, TN,  Dlamini, MW, Kumi, DO, Forbes, R, Jewell, LL & Coville, NJ. 2020. Fisher-Tropsch synthesis in a carbon nanoreactor: spillover effects observed in Co and Ru supported in/on hollow carbon spheres (Co/Ru@MHCS; Co@MHCS@Ru). Applied Catalysis A: General 599:117617.
22. Mbuya, COL, Jewell, LL, Ntelane, TS & MS Scurrell. 2021. The effect of microwave irradiation on heterogeneous catalysts for Fischer-Tropsch synthesis. Reviews in Chemical Engineering. Available at: https://www.degruyter.com/document/doi/10.1515/revce-2020-0017/pdf. Doi.org/10.1515/revce-2020-0017.

Professional affiliation

• Associate Member of the South African Institute of Chemical Engineers/IChemE
• Member of the Catalysis Society of South Africa

Awards and Honours

• NRF rating: C2 (2016 to 2021)
• 2016–2018: Catalytic Reaction Technology and Transformation of Energy Flagship leader
• 2014–2016: NRF RISA Collaborative Postgraduate Training Programme Grant
• 2013: Higher Education Leadership and Management Fellowship (HELM) awarded by Higher Education South Africa (HESA)
• 2010: Best Researcher Award in the Faculty of Engineering and the Built Environment, University of the Witwatersrand

• Fischer-Tropsch catalysis
• CO reduction and hydrogenation to liquid fuels
• Environmental Catalysis: SO₂ reduction

Biography

Linda Jewell is currently a Professor of Chemical Engineering at Unisa.

Her PhD (Wits, 1996) focused on heterogeneous catalysis and was followed by a postdoctoral fellowship at the Centre for Applied Energy Research in Lexington, Kentucky. She then spent two years working in the industry before her appointment at Wits as a senior research officer. She became a senior lecturer in the School of Chemical and Metallurgical Engineering at Wits in June 2004 and was promoted to associate professor in October 2010. She joined Unisa in January 2013 to take up the position of Chair of Department of Civil and Chemical Engineering; she held this position for six years. She was promoted to Professor of Chemical Engineering in 2015.