315 zoekresultaten voor “co2 reaction” in de Publieke website
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near-surface environment in tuning electrochemical CO2 reduction reaction and H2 evolution reaction
This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…
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Electrocatalytic CO2 reduction toward liquid fuels : on heterogeneous electrocatalysts and heterogenized molecular catalysts
With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.
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Electrocatalysis of CO2/CO interconversion and Hydrogen Evolution in Bicarbonate Buffers
Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.
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Glycosyl Cations in Glycosylation Reactions
This thesis describes the use of a combined approach of computational and experimental techniques to gain novel insights to understand the glycosylation reaction and its reactive intermediates.
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Chemical reactivity of O2, CO and CO2 on Cu surfaces
Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.
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Steps in gas-surface reactions
Heterogeneous catalysis is essential to many industrial applications. These catalysts are often comprised of supported nanoparticles, which contain various different surface sites.
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Biomimetic Copper Catalysts for the Electrochemical Oxygen Reduction Reaction
Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.
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Photosynthetic light reactions at the gold interface
Promotor: T.J. Aartsma, Co-promotor: R.N. Frese
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Reactivity and Selectivity in Glycosylation Reactions
The glycosylation reaction is a pivotal reaction in creating new and complex oligosaccharides.
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Iron complexes as electrocatalysts for the water oxidation reaction
In this dissertation, the synthesis and characterization of a series of iron complexes based on different ligand platforms are described.
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Biomimetic redox reactions of the Cu(II) μ-thiolate complex
Promotor: Prof.dr. E. Bouwman
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Highly Accurate Simulations and Benchmarking of Molecule-Surface Reactions
Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.
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Surface-structure dependencies in catalytic reactions
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Structure dependence of molecular reactions on surfaces
The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.
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Periodic pulse solutions to slowly nonlinear reaction-diffusion systems
Promotor: A. Doelman, Co-promotor: J.D.M. Rademacher
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T-CYCLE EPR: Development at 275 GHz for the study of reaction kinetics & intermediates
A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.
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Electrocatalytic reduction of CO2 and nitrate on immobilized metal porphyrins
M.T.M. Koper, Co-promotor: D.G.H. Hetterscheid
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Biomimetic Copper Complexes for Energy Conversion Reactions
Hetterscheid
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Pulses in singularly perturbed reaction-diffusion systems
Promotor: Arjen Doelman, Co-promotor: Vivi Rottschäfer
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Fluorescence Correlation Spectroscopy on Electron Transfer Reaction: Probing Inter- and Intramolecular Redox Processes
Promotores: G.W. Canters, T.J. Aartsma
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Photocatalytic redox reactions at the surface of liposomes
Promotor: Prof.dr. E. Bouwman, Co-promotor: S. Bonnet
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CO2-Calculator
Development of GHG calculator for bio-electricity and heat.
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Surface Reactivity of Activated CO2 Selective use of energy in splitting CO2
Juurlink
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Selective and efficient electrochemical CO2 reduction on nanostructured catalysts
Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink
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Towards efficient low-temperature CO2 electrolysis
Koper Bouwman Bonnet Hetterscheid
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The astrochemical factory: A solid base for interstellar reactions
In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.
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Brandstoffen maken uit zonlicht en CO2
Planten zou je kunnen zien als kleine chemische fabrieken, die via fotosynthese chemische stoffen produceren. Als we fotosynthese kunnen nabootsen in een kunstmatig systeem, kunnen we schone brandstoffen en materialen maken uit zonlicht en CO2. Huub de Groot is heel dicht bij het ontwerpen van zo’n…
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Surface reactivity of activated CO2
Juurlink
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CO2 reduction on post-transition metals and their alloys: an industrial approach
This thesis focuses on the synthesis, characterization and performance towards CO2 electroreduction of mono and bi-metallic particles based on p-block metals
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The electrode-electrolyte interface in CO2 reduction and H2 evolution: a multiscale approach
Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.
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Ab initio molecular dynamics calculations on reactions of molecules with metal surfaces
Promotor: Prof.dr. G.J. Kroes
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Beyond the Born-Oppenheimer Static Surface Model for Molecule- Surface Reactions
Several techniques are explored for going beyond the born-oppenheimer static surface model for molecule-surface reactions.
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Atom addition reactions in interstellar ice - new pathways towards molecular complexity in space -
Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen
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Mechanistic studies of the water oxidation reaction with molecular iron catalysts
In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.
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Semi-empirical approach to the simulation of molecule-surface reaction dynamics
Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.
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Applying autonomous biomolecular cascade reactions to synthesize novel hybrid nucleic acid-graft copolymeric materials
Kieltyka
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Towards artificial photosynthesis on the lipid bilayer of liposomes
Artificial photosynthesis has recognised potential to produce green and sustainable fuels from earth-abundant resources such as water, carbon dioxide (CO2), and sunlight.
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Insights into the mechanism of electrocatalytic CO2 reduction and concomitant catalyst degradation pathways
This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…
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Electroreduction of nitrate and carbon dioxide on copper electrodes: a mechanistic study
In this thesis we have discussed several parameters that affect the electrochemical conversion of enviromentaly harmful molecules such as nitrates and carbon dioxide to more valuable and less deleterious compounds, in order to cast light onto the mechanism of the reaction to achieve an efficient and…
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Leidse vinding haalt CO2 uit de lucht
CO2-reductie door de CO2 eenvoudig met een soort oplaadbare batterij uit de lucht te halen, lijkt pure science fiction. Toch hebben Leidse scheikundigen zo’n ‘batterij’ – een gele koperoplossing die in contact met lucht groenblauw wordt – ontdekt. Hierover publiceren ze in Science van vrijdag 15 jan…
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Goedkope katalysator zet CO2 om in aardgas
Een Leidse ontdekking helpt om van CO2 aardgas te maken én om duurzame energie op te slaan. Onderzoek van professor Marc Koper en promovenda Jing Shen maakt duidelijk hoe dit proces goedkoop en controleerbaar kan verlopen. Nature Communications 1 september 2015.
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The optimization and scale-up of the electrochemical reduction of CO₂ to formate
Carbon dioxide capture and utilization technologies are necessary to create a truly circular economy. The electrochemical reduction of carbon dioxide to formate is an appealing carbon utilization method as it can be performed at room temperature and pressure, it only requires two electrons, and it has…
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Observing what cannot be observed: computational electrochemistry from carbon to hydrogen
In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.
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Een oplossing voor het probleem CO2 uitstoot. Hoe draagt fundamenteel Leids onderzoek daar aan bij?
De stijging van de CO2 concentratie in de lucht neemt gestaag toe, met alle gevolgen van dien. Naast alle organisaties die zich bezig houden met het verminderen van de CO2 concentratie werkt de Universiteit Leiden op drie verschillende manieren aan het vergaren van fundamentele kennis met betrekking…
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Marc Koper onderzoekt brandstof uit water en CO2
Energie winnen uit zonlicht en water: dát zou een oplossing zijn voor ons grootste milieuprobleem. Elektrochemicus Marc Koper onderzoekt de basis voor een CO2-neutrale toekomst. Over zijn werk staat nu een dossier online.
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CO2 omzetten in brandstof
Wetenschappers zijn druk bezig zonne-energie vast te leggen in CO2-neutrale ‘solar fuels’. Dat klinkt veelbelovend, maar er is ook kritiek. Zijn die brandstoffen wel echt wel CO2-neutraal en maakt concurrentie door alternatieven ze niet overbodig?
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Reactivity of cobalt(II)-dichalcogenide complexes: correlation between redox conversion and ligand-field strength
The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.
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Fundamental research on the voltammetry of polycrystalline gold
Voltammetry plays a crucial role in modern scientific research by offering valuable insights into the electrochemical properties of materials, with wide-ranging applications in fields such as materials science, energy storage, corrosion studies, and sensor development.
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Psychologen peilen maatschappelijke acceptatie ondergronds opslaan CO2
Hoe verminderen we de uitstoot van CO2 in de industrie? De Leidse psychologen Emma ter Mors en Christine Boomsma onderzoeken de publieke perceptie en acceptatie rondom de afvang en opslag van koolstofdioxide. Dat doen zij voor het Europese onderzoeksprogramma ALIGN CCUS.
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Leidse chemici ontvangen financiering voor onderzoek naar CO2-neutrale brandstoffen
Productie van duurzame energie is belangrijk maar het teveel aan opgewekte energie moet opgeslagen en gebruikt kunnen worden wanneer er een tekort is. Onderzoekers uit het hele land bedachten mogelijke oplossingen voor dit probleem en zeven voorstellen ontvangen financiering van Shell, FOM en NWO. Twee…