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Hydrogen-free, room temperature electrocatalytic upgrading of bitumen and bitumen asphaltenes to transportation fuels. Electrochemical conversion of bitumen to value-added carbon materials – graphenes, quantum dots, and carbon fibres. Electrocatalytic conversion of lignin to cabon quatum dots.
Thermal catalytic gasification of water; off-grid production of hydrogen and potable water from greywater, saltwater, or wastewater. Electrocatalytic desalination of saltwater. Electrocatalytic decarbonization, detoxification, and dewatering of tailings ponds. FES Funded ProjectsOutputs
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TiO2 Nanotube - Noble Metal Nanoparticle Heterojunction Photocatalysts for CO2 ReductionThe sunlight-driven transformation of CO2 into hydrocarbon fuels is a highly challenging photocatalytic reaction which involves six to eight electron transfer steps. Even though titanium dioxide nanomaterials are currently some of the best performing photocatalysts for CO2 reduction, the reaction yields for CO2 photoreduction are currently limited by (i) Inadequate harvesting of visible photons (ii) Poor adsorption of reactants on to catalyst surfaces (iii) Inefficient charge transfer to adsorbates and (iv) Recombination losses. Amongst various types of titania nanomaterials, vertically oriented TiO2 nanotube arrays stand out for their self-organization and tunability of geometric dimensions (diameter, wall-thickness, tube length and intertubular spacing). When TiO2 nanotubes are decorated with noble metal nanoparticles (NPs), the resulting heterojunctions are able to overcome or mitigate the technical problems limiting higher CO2 reduction rates and we have been able to achieve methane yields as high as 3.7 mL g-1 h-1. Isotope labeled reactants were used to verify that the reaction products were indeed formed due to CO2 reduction. However the phase composition of TiO2, the nature of the noble metal NP deposition process, and the type of noble metal used play a critical role in determining the performance of CO2 reduction photocatalysts based on such heterojunctions. Our investigations showed that anatase-rutile mixtures perform better than either anatase or rutile alone. Similarly, photodeposition and grafting of colloidal NPs on to the nanotubes were found to be superior methods to form the heterojunction compared to direct vacuum deposition (sputtering) of noble metal islands followed by annealing. T12-P02 University of Alberta | Activity | 2018-06-20 | | Decoupling structure-sensitive deactivation mechanisms of Ir/IrOx electrocatalysts toward oxygen evolution reactionT06-P04, T09-C01 University of Alberta | Publication | 2019-03-01 | | Inhibition of diolefin hydrogenation by quinolineFull PaperT09-C01 University of Alberta | Publication | 2020-06-15 | | Phase Transition Engineering of Host Perovskite toward Optimal Exsolution-facilitated Catalysts for Carbon Dioxide ElectrolysisT02-P03 University of Alberta | Publication | 2023-05-23 | Bowen Zhang, Mengnan Zhu, Minrui Gao, "Jian Chen ", "Xiuan Xi ", Jing Shen, "Renfei Feng ", Semagina, N., "Nanqi duan ", Zeng, H., Luo, J. | Fluorine-Stabilized BO6 Octahedron of Host Perovskites for Robust Carbon Dioxide Electrolysis on Exsolved CatalystsT02-P03 University of Alberta | Publication | 2023-10-02 | Bowen Zhang, Mengnan Zhu, Minrui Gao, "Xiaoyu Liu ", Jing Shen, "Xiuan Xi ", "Nanqi Duan ", Semagina, N., Zeng, H., Luo, J. | Nickel Nanocatalysts for Potassium Alkoxide-Mediated Hydrodesulfurization of Dibenzothiophene Under Mild ConditionsT09-C01 | Publication | 2021-04-28 | Orain Alberga Brown, Robin Hamilton, "Robert McDonald", Jeffrey Mark Stryker | Lithium Cation-promoted Two-electron Reduction of Tetranuclear Copper(I) Phosphoranimide Clusters. Stabilization of “Zero-valent Copper” Embedded in a Soluble Cu4Li2 Matrix
T09-C01 | Publication | 2021-04-28 | Orain Alberga Brown, Robin Hamilton, "Kai Ylijoki", Jeffrey Mark Stryker | Synthetic Asphaltene Mixture Looks Like Real AsphalteneT09-C01 | Activity | 2019-06-04 | "Masato Morimoto", David Scott, Robin Hamilton, Jeffrey Mark Stryker, "Rik Tykwinski", "Murray Gray" | Deciphering Structure and Aggregation in Asphaltenes: Hypothesis-driven Design and Development of Synthetic Model CompoundsDeciphering Structure and Aggregation in Asphaltenes: Hypothesis-driven Design and Development of Synthetic Model Compounds
David E. Scott,a Matthias Schulze,b Jeffrey M. Stryker,a* and Rik R. Tykwinskia*
a Department of Chemistry, University of Alberta, Edmonton, AB, T6G 2G2, Canada
jeff.stryker@ualberta.ca, rik.tykwinski@ualberta.ca
b Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany.
T09-C01 | Publication | 2021-04-28 | David Scott, "Matthias Schulze", Jeffrey Mark Stryker, "Rik Tykwinski" | Model Asphaltene Compounds. A Synthetic Approach to Characterization of Asphaltene Structure and Aggregation T09-C01 | Activity | 2019-06-04 | David Scott, "Masato Morimoto", Yaowei Guo, Mark Daniel Aloisio, "Murray Gray", "Rik Tykwinski", Jeffrey Mark Stryker | Disaggregation of Asphaltene and Its Model Compounds in Solutions Depending on Affinity Indices of Hansen Solubility Parameter Using Ultra- Small-, Small-, and Wide-Angle X-ray ScatteringAs the title states. The work is relevant to the determination of optimized conditions for partial upgrading and electrocatalytic production of transportation fuels from bitumen asphaltenes. T09-C01 | Publication | 2022-04-29 | "Takeshi Morita", "Masato Morimoto", David Scott, "Hedeki Yamamoto", "Rik Tykwinski", Jeffrey Mark Stryker, "et al." | Hydrogen-free Copper-catalyzed Internal Transfer Hydrogenolysis of Lignin and Lignin Model CompoundsT09-C01 | Publication | 2021-04-28 | Orain Alberga Brown, Sanjay Jadhav, Tarek El Sayed, Jeffrey Mark Stryker | Base metal-catalyzed, additive-free C–O bond cleavage of β-O-4 lignin model compoundsAs an outgrowth of our work in aromatic-selective C-S bond hydrogenolysis, new catalysts for lignin-related C–O bond hydrogenolysis are discussed.T09-C01 University of Alberta | Activity | 2019-03-31 | Orain Alberga Brown, Asama Vorapattanapong (Leduc), Semagina, N., Jeffrey Mark Stryker | A Sulfided Homogeneous Iron Precatalyst for Partial Hydrogenation and Hydrodesulfurization of Polycyclic Aromatic Model Asphaltenes Energy Fuels 2020, 34, 12, 16532–16541
Publication Date:November 19, 2020
https://doi.org/10.1021/acs.energyfuels.0c02908
Copyright © 2020 American Chemical SocietyT09-C01 | Publication | 2020-11-19 | Benjamin Antwi Peprah, Orain Alberga Brown, Jeffrey Mark Stryker, William McCaffrey | Sulfided Homogeneous Iron Precatalyst for Partial Hydrogenation and Hydrodesulfurization of Polycyclic Aromatic Model AsphaltenesT09-C01 | Publication | 2021-04-28 | Benjamin Antwi Peprah, Orain Alberga Brown, Jeffrey Mark Stryker, William McCaffrey | Selective Hydrogenation and Defunctionalization of Heavy Oil Model Compounds Using Unsupported Iron CatalyAir-stable unsupported iron sulfide nanoparticles derived from a single-source homogeneous precatalyst, Fe2S2(CO)6, are highly effective catalysts for the partial hydrogenation of substituted anthracenes and aromatic nitrogen and sulfur heterocycles. The reactivity of the anthracene series is governed by stereoelectronic effects. These results reveal that inexpensive, low-activity catalysts may find a role in the partial upgrading of bitumen, provided higher activity derivatives can be identified. T09-C01 | Publication | 2023-02-01 | Benjamin Antwi Peprah, Orain Alberga Brown, William McCaffrey, Jeffrey Mark Stryker | Computational Investigation of the Metal and Ligand Substitution Effects on the Structure and Electronic States of the Phosphoranimide Tetramer Complexes of Cu(I), Ni(I), Co(I), and Fe(I)T09-C01 | Publication | 2022-01-01 | Faustine Spillebout, Stanislav R Stoyanov, Oleksandr Zelyak, Jeffrey Mark Stryker, Andriy Kovalenko | Optimizing the Iodide/Iodonium/O2 Oxidation Cycle Enhances the Scope, Selectivity, and Yields of Hydroiodic Acid-Catalyzed Multicomponent Cyclocondensation ReactionsT09-C01 | Publication | 2021-08-01 | David E Scott, Mark Daniel Aloisio, Jose F Rodriguez, Masato Morimoto, Robin J Hamilton, Orain Alberga Brown, Rik R Tykwinski, Jeffrey Mark Stryker | Model Asphaltenes Adsorbed onto Methyl- and COOH -Terminated SAMs on GoldT09-C01 | Publication | 2021-08-01 | Thaddeus W Golbek, Ryan A Faase, Mette H Rasmussen, Rik R Tykwinski, Jeffrey Mark Stryker, Simon Ivar Andersen, Joe E Baio, Tobias Weidner | Electrocatalytic Up-Cycling of Asphaltenes T09-C01 | Activity | 2022-05-26 | Jeffrey Mark Stryker |
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