Dr Theodoros Papalas PhD

Dr Theodoros Papalas

School of Chemical Engineering
Assistant Professor in Hydrogen Energy

Contact details

Address
School of Chemical Engineering
University of Birmingham
Edgbaston
Birmingham
B15 2TT
UK

Theodoros is an assistant professor in the School of Chemical Engineering. His research focuses on reaction engineering, catalysis and process intensification to develop sustainable materials and processes around hydrogen and alternative energy vectors, while also mitigating CO2 and other industrial emissions.

Qualifications

  • PhD in Chemical Engineering, Aristotle University of Thessaloniki in Greece, 2023
  • Integrated Master in Chemical Engineering, Aristotle University of Thessaloniki in Greece, 2018

Biography

Theodoros (Thodoris) is a chemical engineer who graduated from the Aristotle University of Thessaloniki, Greece, in November 2018, ranking 3rd in a class of 120 students. In December 2018, he started his PhD in the Department of Chemical Engineering at the same institution, under the supervision of Prof. Angeliki A. Lemonidou, from where he graduated in November 2023 with distinction, a distinction awarded on very rare occasions in the department’s 50+ year history. From January 2024 to March 2026, he worked as a postdoctoral research associate in the Department of Chemical Engineering and Biotechnology at the University of Cambridge, UK, in the research groups of Dr Ewa J.

Marek and Prof. Laura Torrente Murciano. In April 2026, he started his role as assistant professor in the School of Chemical Engineering at the University of Birmingham.

Through his career, he has developed expertise on sustainable energy technologies through a synergetic experimental and computational approach. His work integrates synthesis and advanced characterisation of materials and catalysts with the thorough evaluation of their performance in bench-scale fixed or fluidised bed reactor systems. These efforts are complemented by kinetic modelling and in-depth analysis of reaction mechanisms. His experimental work is further supported by computational studies, including thermodynamic, kinetic and exergy analyses across a wide range of reactions and technologies. In addition, it incorporates process simulations coupled with energy, exergy, techno-economic and environmental assessments.

Apart from his research work, in September 2025, Thodoris was elected Chair of the Early Career Chemical Engineers section of the European Federation of Chemical Engineering (EFCE). The section supports young professionals as they transition from university to academia or industry, organises events that showcase the career pathways available to chemical engineers and works to bridge the gap between academia and industry in the field of chemical engineering. The purpose of the section is to also provide opportunities for connection, leadership and professional development for chemical engineers, while ensuring that early career perspectives help shape EFCE’s activities and direction.

Postgraduate supervision

Accepting PhD students

Research

  • Hydrogen production, utilisation and storage
  • CO2 capture and (in situ) utilisation
  • Chemical looping
  • Sorption-enhanced intensified processes
  • High and intermediate temperature sorbents
  • NOx selective catalytic abatement
  • Material synthesis and advanced characterisation
  • Process design and feasibility assessment

Publications

Recent publications

Article

Papalas, T, Arampatzis, A, Antzaras, AN & Lemonidou, AA 2026, 'Intensification of natural gas reforming: Feasibility assessment of a novel technology for blue hydrogen production', International Journal of Hydrogen Energy, vol. 217, 153965. https://doi.org/10.1016/j.ijhydene.2026.153965

Papalas, T, Palamas, E, Antzaras, AN & Lemonidou, AA 2024, 'Evaluating bimetallic Ni-Co oxygen carriers for their redox behavior and catalytic activity toward steam methane reforming', Fuel, vol. 359, 130272. https://doi.org/10.1016/j.fuel.2023.130272

Papalas, T, Lypiridis, D, Antzaras, AN & Lemonidou, AA 2024, 'Experimental investigation of integrated CO2 capture and conversion to syngas via calcium looping coupled with dry reforming of CH4', Chemical Engineering Journal, vol. 485, 149866. https://doi.org/10.1016/j.cej.2024.149866

Papalas, T, Antzaras, AN & Lemonidou, AA 2024, 'Integrated CO2 Capture and Utilization by Combining Calcium Looping with CH4 Reforming Processes: A Thermodynamic and Exergetic Approach', Energy and Fuels, vol. 38, no. 13, pp. 11966-11979. https://doi.org/10.1021/acs.energyfuels.4c01462

Papalas, T, Antzaras, AN & Lemonidou, AA 2024, 'Unravelling the role of Co in mixed Ni-Co oxygen carriers/catalysts for H2 production via sorption enhanced steam methane reforming coupled with chemical looping', Applied Catalysis B: Environmental, vol. 347, 123777. https://doi.org/10.1016/j.apcatb.2024.123777

Papalas, T, Antzaras, AN & Lemonidou, AA 2024, 'Unveiling the dynamic CO2 capture performance of MgO promoted with molten salts and CaCO3 via fixed bed reactor experiments', Reaction Chemistry and Engineering, vol. 10, no. 1, pp. 168-176. https://doi.org/10.1039/d4re00432a

Antzaras, AN, Papalas, T, Heracleous, E & Kouris, C 2023, 'Techno–economic and environmental assessment of CO2 capture technologies in the cement industry', Journal of Cleaner Production, vol. 428, 139330. https://doi.org/10.1016/j.jclepro.2023.139330

Papalas, T, Polychronidis, I, Antzaras, AN & Lemonidou, AA 2021, 'Enhancing the intermediate-temperature CO2 capture efficiency of mineral MgO via molten alkali nitrates and CaCO3: Characterization and sorption mechanism', Journal of CO2 Utilization, vol. 50, 101605. https://doi.org/10.1016/j.jcou.2021.101605

Papalas, T, Antzaras, AN & Lemonidou, AA 2021, 'Magnesite-derived MgO promoted with molten salts and limestone as highly-efficient CO2 sorbent', Journal of CO2 Utilization, vol. 53, 101725. https://doi.org/10.1016/j.jcou.2021.101725

Papalas, T, Antzaras, AN & Lemonidou, AA 2020, 'Evaluation of Calcium-Based Sorbents Derived from Natural Ores and Industrial Wastes for High-Temperature CO2Capture', Industrial and Engineering Chemistry Research, vol. 59, no. 21, pp. 9926-9938. https://doi.org/10.1021/acs.iecr.9b06834

Papalas, T, Antzaras, AN & Lemonidou, AA 2020, 'Intensified steam methane reforming coupled with Ca-Ni looping in a dual fluidized bed reactor system: A conceptual design', Chemical Engineering Journal, vol. 382, 122993. https://doi.org/10.1016/j.cej.2019.122993

Conference contribution

Papalas, T, Antzara, A & Lemonidou, A 2019, Conceptual design of a dual fluidized bed system for an intensified steam methane reforming concept coupled with Ca-Ni looping. in 12th Natural Gas Conversion Symposium 2019. 12th Natural Gas Conversion Symposium 2019, AIChE, pp. 445-448, 12th Natural Gas Conversion Symposium 2019, San Antonio, United States, 2/06/19.

Review article

Darda, S, Papalas, T & Zabaniotou, A 2019, 'Biofuels journey in Europe: Currently the way to low carbon economy sustainability is still a challenge', Journal of Cleaner Production, vol. 208, pp. 575-588. https://doi.org/10.1016/j.jclepro.2018.10.147

View all publications in research portal