Welcome to the website of the MECHANISM project. The main goal of this project is to study the effect of H2O on Fischer-Tropsch (FT) synthesis rates and selectivities. H2O is one of the products of FT reaction and influences rates and selectivities when purposely added or increases in concentration with increasing residence time. This project addresses the roles of pore diameter of catalyst, the Co nanoparticle size, the extent of reduction of Co oxide and reaction conditions (e.g. reactiontemperature) on these rates and selectivities affected by H2O.
The Fischer-Tropsch (FT) synthesis is an industrial catalytic reaction that converts a mixture of carbon monoxide and hydrogen (synthesis gas) into liquid hydrocarbons (synthetic fuels) and water. Its general stoichiometry is:
nCO + (2n+1)H2 → CnH(2n+2) + nH2O
The synthesis gas can be derived from natural gas, biomass, coal, or waste streams. The interest in FT synthesis has grown significantly since first discovered, in 1925, because it provides the most economic path for the synthesis of liquid fuels free of sulphur and with lower soot emissions than fuels derived from crude oil. Due to the cost of crude oil and its depleting reserves, it has become necessary to develop sustainable energy sources and carriers. This project is very important for Cyprus but also for the European Union because of the large natural gas reserves discovered offshore of the state of the Republic of Cyprus.
H2O is one of the main products of FT reaction and influences FT rates and selectivities. The aim of this project is to understand the effect of H2O on FT rates and selectivities and the roles of pore diameter of catalyst, the Co nanoparticle size, the extent of reduction of Co oxide and reaction conditions (e.g. reaction temperature).
Project acronym: MECHANISM
Project full title: “The effect of water in the Fischer-Tropsch reaction mechanism and kinetics over bimetallic Co-based catalysts: Theoretical and experimental studies.”
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 703060.
This MECHANISM project covers multidisciplinary areas of heterogeneous catalysis and solid state chemistry. The research objectives are outlines as follow:
- Synthesis of Co-based catalysts of uniform composition and a range of mean cluster diameter.
- Physicochemical characterization of Co-based catalytic materials, using TEM, PXRD, BET, TPD and in situ DRIFTS.
- Understanding of the influence of water on the catalytic behaviour of these materials. The catalytic results will be correlated with the physicochemical properties of catalysts.
- The elucidation of mechanistic details using DFT calculations, SSITKA-DRIFTS and -MS technique and transient experiments in order to study the effect of water and cluster size on the nature and reactivity of reaction intermediates.
University of Cyprus (UCY) – Host of the ingoing phase
Prof. Angelos M. Efstathiou, Supervisor, Department of Chemistry, Heterogeneous Catalysis Laboratory.
Dr. Klito C. Petallidou, Experienced researcher, Department of Chemistry, Heterogeneous Catalysis Laboratory.
University of California at Berkeley (UCB)- Host of the outgoing phase
Prof. Enrique Iglesia, Supervisor, Department of Chemical and Biomolecular Engineering, Laboratory for the Science and Application of Catalysis (LSAC).
Dr. Klito C. Petallidou holds a PhD in Chemistry from the Department of Chemistry of University of Cyprus (Cyprus) and a BSc in Chemistry from the Department of Chemistry of National and Kapodistrian University of Athens (Greece). Until now, she has sixteen (16) scientific publications in peer-reviewed international journals with high IF (4.5-16.7) resulting so far in 364 total citations (h-index = 10). She had participated in 20 scientific international and national conferences. In 2016, she was awarded with a Marie Skłodowska Curie Individual Fellowship (H2020-MSCA-IF 2015) for the project “The effect of water in the Fischer-Tropsch reaction mechanism and kinetics over bimetallic Co-based catalysts: Theoretical and experimental studies.” (Project acronym: MECHANISM, No. 703060). Her research interest is in the area of Heterogeneous Catalysis. A major component of her research are the kinetic and mechanistic studies of different heterogeneous catalytic reactions for energy production (synthetic fuels, H2 production) and environmental applications (selective catalytic reduction of NOx) using the SSITKA-operando technique (coupled with on line Mass Spectrometry and DRIFTS) and other transient isotopic techniques. Also, she gave great emphasis in the characterization (e.g. BET, XRD, TPD, TPR, TPSR, DRIFTS, Uv-vis/DRS, TEM) of catalysts.
Dissemination of results:
- K.C. Petallidou*, M.A. Vasiliades, A.M. Efstathiou*, “Deactivation of Co/γ-Al2O3 in CO methanation reaction: The effect of Co particle size studied by Transient Isotopic
- Experiments”, Journal of Catalysis, 389 (2020) 176-194. (doi: 10.1016/j.jcat.2020.05.017). [Journal Of Catalysis]
- K.C. Petallidou, A.M. Efstathiou, “The effect of water in CO methanation reaction over Co/γ-Al2O3 catalysts using Transient Isotopic Experiments, in preparation.
- K.C. Petallidou, A.M. Efstathiou, “Effect of cobalt particle size and temperature on the kinetic of reduction of cobalt oxide using transient isothermal reduction technique”, in preparation.
- K.C. Petallidou, E. Iglesia, “The effects of water on Fischer-Tropsch synthesis rate and selectivity: Roles of void structure, Co nanoparticle size and extent of reduction of Co oxide precursors”, in preparation.
- K.C. Petallidou, E. Iglesia, “Influences of reaction temperature on the effect of water on Fischer-Tropsch synthesis rate and selectivity at low total pressure of reactants”, in preparation.
- K.C. Petallidou, E. Iglesia, “Effect of experimental conditions (total pressure of reactants and temperature) on the effect of water on Fischer-Tropsch synthesis rate and selectivity”, in preparation.
- K.C. Petallidou, E. Iglesia, A.M. Efstathiou, “Consequences of important parameters on the effect of water on Fischer-Tropsch synthesis rate and selectivity”, SIPS-2019, Vayenas International Symposium, Paphos, Cyprus, 23-27 October 2019 (oral presentation).