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266 results for “Catalyst”
Data from: Microwave-assisted graphene oxide/carbon spheres with silver nanoparticles: Dual catalyst for peroxide detection and antibacterial use
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La and Mn-doped cobalt spinel oxygen evolution catalyst for proton exchange membrane electrolysis
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Data file for paper:Zalitis, Christopher; Kucernak, Anthony; Lin, Xiaoqian; Sharman, Jonathan, "Electrochemical Measurement of Intrinsic Oxygen Reduction Reaction Activity at High Current Densities as a Function of Particle Size for Pt<sub>4-x</sub>Co<sub>x</sub> /C (x=0,1,3) Catalysts", ACS Catalysis, 2020 - https://doi.org/10.1021/acscatal.9b04750
<p>The data in this spreadsheet was used to produce the figures in the paper </p> <p>Authors: Zalitis, Christopher; Kucernak, Anthony; Lin, Xiaoqian; Sharman, Jonathan</p> <p>Title: Electrochemical Measurement of Intrinsic Oxygen Reduction Reaction Activity at High Current Densities as a Function of Particle Size for Pt<sub>4-x</sub>Co<sub>x</sub> /C (x=0,1,3) Catalysts</p> <p>Journal: ACS Catalysis</p> <p>Year: 2020</p>
Isolated Ti(III) Species on the Surface of a Pre-active Ziegler Natta Catalyst. Dataset related to publication. Version: 1
<p>Origin of the data: Experimental spectroscopic measurements; Computer modelling. </p> <p>Data type: experimental measurements, models.</p> <p>The obtained data are in txt, DCS, DTA, SPC and PAR format.</p> <p>Data <strong>generated</strong> by a machine. Information on the machine: firm which produced the machine: <em>BRUKER</em>; version of the machine: <em>ESP 300E for measurements at X-band frequency and Elexys E580 for measurements at Q-band frequency</em>.</p> <p>Methodology used to collect the data and to process the data: <strong><em>EPR Spectroscopy</em></strong></p> <p>Analytical and procedural information: <strong><em>EPR Spectroscopy</em></strong></p> <p>Definitions of variables: <strong><em>Magnetic field and temperature.</em></strong></p> <p>Units of measurement: <strong><em>milli Tesla (mT), Kelvin (K), Megahertz (MHz).</em></strong></p> <p>Abbreviation <strong>mg70 </strong>for the data related to the binary system MgCl<sub>2</sub>/TiCl<sub>4</sub>,</p> <p>Abbreviation <strong>mg21 </strong> for the data related to the ternary system MgCl<sub>2</sub>/TiCl<sub>4</sub>/monoether</p> <p>Abbreviation <strong>mg36 </strong> for the data related to the ternary system MgCl<sub>2</sub>/TiCl<sub>4</sub>/diester.</p> <p>Specialized abbreviations:</p> <p><strong><em>EPR</em></strong><em> – Electron Paramagnetic Resonance,</em> <em><strong>CW</strong>– Continuous Wave,</em> <em><strong>ESE – </strong>Electron Spin Echo,</em> <strong><em>ESEEM </em></strong><br> <em>– Electron Spin Echo Envelope Modulation,</em> <em><strong>HYSCORE</strong> – Hyperfine Sublevel Correlation, </em><strong><em>ZN catalyst</em></strong><br> <em>– Ziegler-Natta catalyst</em>, <em><strong>ID – </strong>internal donor.</em></p> <p>To read the data, OriginPro 9.0 and Matlab R2019a have been used on Windows platform. For simulation Easyspin 5.2.28 simulation package has been used. To read the data, also Python can be used based on the convenience of the users.</p> <p>To process the data, OriginPro 9.0 and Matlab R2019a have been used in Windows platform. Python can also be used based on the convenient of users.</p> <p>Where to get <em>OriginPro 9.0, Matlab R2019a and Easyspin 5.2.28: </em></p> <ul> <li>MATLAB R2019a: <a href="https://nl.mathworks.com/downloads/web_downloads/select_release?mode=gwylf">https://nl.mathworks.com/downloads/web_downloads/select_release?mode=gwylf</a></li> <li>OriginPro 9.0: <a href="https://www.originlab.com/index.aspx?go=PRODUCTS/Origin">https://www.originlab.com/index.aspx?go=PRODUCTS/Origin</a></li> <li>Easyspin 5.2.28: <a href="https://easyspin.org/easyspin/documentation/index.html">https://easyspin.org/easyspin/documentation/index.html</a></li> </ul> <p>Where to get the licenses:</p> <p>For MATLAB R2019a the website to download the licence is: <a href="https://nl.mathworks.com/downloads/web_downloads/select_release?mode=gwylf">https://nl.mathworks.com/downloads/web_downloads/select_release?mode=gwylf</a></p> <p>For OriginPro 9.0: <a href="https://www.originlab.com/index.aspx?go=PURCHASE/LicensingOptions">https://www.originlab.com/index.aspx?go=PURCHASE/LicensingOptions</a></p>
Non-Profit Energy Cooperatives as the Catalyst of the Movement of People to Renewable Electricity
<p>The Environment, Energy and Natural Resources (EENR) Center of University of Houston Law Center hosted a webinar on April 3rd – 11:00 am EDT as part of the Energy Transition Governance Project Webinar/Lecture Series.</p> <p>The webinar features: Melissa K. Scanlan, Visiting Professor, Boston College Law School, Director, New Economy Law Center, Law Professor, Vermont Law School;</p> <p>Gabe Pacyniak, Assistant Professor of Law, University of New Mexico;</p> <p>Aubin Nzaou, Marie Sklodowska-Curie Fellow in Law and Energy Policy, University of Houston Law Center.</p> <p>The renewable energy revolution poses a once in a lifetime opportunity for co-benefits of democracy, bringing electricity to those who lack it, and equity. This transition has the potential for widely shared prosperity, not just a decrease in suffering. To unlock that potential, however, we also need to disrupt business as usual in the dominant business model. The co-benefits are more likely if the institutions that lead the way are democratically owned and managed with the explicit goal of bringing the benefits of ownership to those who have been traditionally marginalized by the current economic and energy system. The talk will sketch the pathways to sustainable development and deep decarbonization of energy at the global level. First, Professor Melissa Scanlan will discuss research on non-profit energy cooperatives she is leading, which demonstrates how different aspects of the transition are already underway. Each case study, from a comparative perspective of Spain and the U.S., includes an overview of the cooperative’s history, type, and economic sector; context based on its industry and country; best practices in environmental sustainability; and its governance and cooperative legal structure. The panel will discuss Spanish renewable energy cooperatives involved in various points in the energy system and a US electricity cooperative in the politically conservative Deep South that is leading the transition to renewables. Second, Professor Gabe Pacyniak will discuss how the rural electricity cooperative model in the United States also presents some challenges when it comes to shifting to a lower-carbon electricity grid. The over 900 electric cooperatives in the United States have generally been slower to shift to lower-carbon electricity in comparison to other types of utilities. Pacyniak will share research that identifies structural and institutional factors for this lag, and will also highlight opportunities to strengthen cooperative supports and oversight to accelerate the shift to a low-carbon electricity system.</p>
Unravelling CO adsorption on model single-atom catalysts (SAC)
<p>This dataset contains atomic position files (VASP POSCAR format) of structures relevant for our study regarding CO adsorption on SAC.</p> <p>The computational details are given in the supplement material.</p> <p>The dataset contains files for the following elements: Me=[Cu,Ag,Au,Ni,Pd,Pt,Rh,Ir].</p> <p>1) for 2- or 5- fold coordinated SAC sites on the Fe3O4(001) surface,</p> <p>POSCAR_Me_Fe3O4_001_2fold and POSCAR_Me_Fe3O4_001_5fold,</p> <p> </p> <p>2) for atop sites on Me(111) and Me(001) surfaces,</p> <p>(with larger reconstructions to avoid coverage effects, see discussion and details in SI),</p> <p>POSCAR_Me_111 and POSCAR_Me_001</p> <p> </p> <p>3) for sites on stable oxide surfaces,</p> <p>POSCAR_Me_ox</p> <p>The exact list of which oxides and surfaces are investigated can be found again in the SI.</p> <p> </p> <p>Additionally, the same above mention structure files can be found in their CO-adsorbed version (Me+CO).</p> <p> </p> <p> </p>
Pd-based bimetallic catalysts in hydrogenation with parahydrogen
<p>Here is raw NMR data obtained while different Pd-based bimetallic catalysts were tested in gas-phase propyne hydrogenation with parahydrogen. </p> <p><strong>Folder PdAg Pd Ag:</strong></p> <p>1) spectra 1-13 - bimetallic Pd-Ag catalyst was tested at different gas flow rates at 100 C;</p> <p>2) spectra 14-21 - bimetallic Pd-Ag catalyst was tested at different gas flow rates at 200 C;</p> <p>3) spectra 22-29 - bimetallic Pd-Ag catalyst was tested at different gas flow rates at 300 C;</p> <p>4) spectra 30-32 - monometallic Ag catalyst was tested at different flow rates at 200 C;</p> <p>5) spectra 33-38 - monometallic Ag catalyst was tested at different flow rates at 300 C;</p> <p>6) spectra 39-47 - monometallic Pd catalyst was tested at different flow rates at 300 C;</p> <p>7) spectra 48-55 - monometallic Pd catalyst was tested at different flow rates at 200 C;</p> <p>8) spectra 56-63 - monometallic Pd catalyst was tested at different flow rates at 100 C;</p> <p>9) spectra 64-67 - monometallic Pd catalyst was tested at different flow rates at 50 C.</p> <p><strong>Folder PdIn:</strong></p> <p>1) spectra 300-308 - bimetallic PdIn catalyst was tested at different flow rates at 100 C;</p> <p>2) spectra 309-318 - bimetallic PdIn catalyst was tested at different flow rates at 200 C;</p> <p>3) spectra 319-326 - bimetallic PdIn catalyst was tested at different flow rates at 300 C;</p> <p>4) spectra 327-334 - bimetallic PdIn catalyst was tested at different flow rates at 400 C;</p> <p>5) spectra 335-342 - bimetallic PdIn catalyst was tested at different flow rates at 500 C;</p>
Data for: Immobilization of molecular catalysts on electrode surfaces using host–guest interactions
<p>Anchoring molecular catalysts on electrode surfaces combines the high selectivity and activity of molecular systems with the practicality of heterogeneous systems. Molecular catalysts, however, are far less stable than traditional heterogeneous electrocatalysts, and therefore a method to easily replace anchored molecular catalysts that have degraded could make such electrosynthetic systems more attractive. Here, we apply a non-covalent 'click' chemistry approach to reversibly bind molecular electrocatalysts to electrode surfaces through host–guest complexation with surface-anchored cyclodextrins. The host–guest interaction is remarkably strong and enables the flow of electrons between the electrode and the guest catalyst. Electrosynthesis in both organic and aqueous media was demonstrated on metal oxide electrodes, with stability on the order of hours. The catalytic surfaces can be recycled by controlled release of the guest from the host cavities and readsorption of fresh guest. </p>
Data from: The fabrication of the heterojunction catalyst BiVO4/P25 and its visible-light photocatalytic activities
A heterojunction catalyst BiVO4/P25 was successfully fabricated using a one-step hydrothermal method. The BiVO4/P25 samples exhibited better photocatalytic activities and absorption performances when compared with the pure BiVO4. The degradation rate of the methyl blue (MB) solution (5 mg/L) reached up to 85% in sixty minutes under visible-light illumination (λ > 420 nm). The nanocomposites were characterized using XPS, Raman spectroscopy, FT-IR, UV–visual diffuse reflectance spectroscopy, SEM and HR-TEM. A high-powered scanning electron microscope showed a polyhedron shape and a flower-like shape. The BiVO4/P25 nanocomposite was found to have a rougher surface, as well as a larger surface area, when compared with the pure BiVO4. This resulted in an improved photocatalytic activity, along with super absorption to a large extent.
Data file for paper "The intriguing poison tolerance of non-precious metal oxygen reduction reaction (ORR) catalysts" DOI: 10.1039/C5TA05794A
<p>Data file containing data for figures and supplemental information for the paper</p> <p>The intriguing poison tolerance of non-precious metal oxygen reduction reaction (ORR) catalysts</p> <p>D. Malko, T. Lopes, E. Symianakis and A. R. Kucernak</p> <p>published in Journal of Materials Chemistry A, 2015</p> <p>DOI: 10.1039/C5TA05794A</p>
Dataset for the paper "A catalyst layer optimisation approach using electrochemical impedance spectroscopy for PEM fuel cells operated with pyrolysed transition metal-N-C catalysts", J Power Sources, 2016, DOI: 10.1016/j.jpowsour.2016.05.035
<p>Data file for paper:"A catalyst layer optimisation approach using electrochemical impedance spectroscopy for PEM fuel cells operated with pyrolysed transition metal-N-C catalysts"</p> <p>Daniel Malko, Thiago Lopes, Edson A. Ticianelli, Anthony Kucernak</p> <p>Journal of Power Sources, 2016</p> <p>DOI: 10.1016/j.jpowsour.2016.05.035</p> <p>Please cite the above paper if you use this data</p>
Data file for paper: " In situ electrochemical quantification of active sites in Fe–N/C non-precious metal catalysts.", Nature. Communications, 7, 13285 doi: 10.1038/ncomms13285 (2016).
<p>The data in this spreadsheet was used to produce the figures in the paper</p> <p>Malko, D., Kucernak, A and Lopes, T, " In situ electrochemical quantification of active sites in Fe–N/C non-precious metal catalysts." </p> <p>Nat. Commun., 7, 13285 doi: 10.1038/ncomms13285 (2016).</p> <p>Please cite the above reference if you wish to use this data</p>
PSP-coordinated nickel(II) complexes as Kumada coupling catalysts
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Supplementary Material for 1,2,4-Triazines and Calcium Carbide in the Catalyst-Free Synthesis of 2,3,6-Trisubstituted Pyridines and Their D-, 13C-, and Doubly D2-13C2-Labeled Analogues
<p><a href="https://onlinelibrary.wiley.com/doi/10.1002/asia.202300781">https://onlinelibrary.wiley.com/doi/10.1002/asia.202300781</a></p>
Long-term performance of PEM water electrolysis cells with 3D printed electrodes and low catalyst loading
<p>Original data for the article with the same title</p>
Dataset for the paper "Nanostructured Catalyst Layer Allowing Production of Ultralow Loading Electrodes for Polymer Electrolyte Membrane Fuel Cells with Superior Performance" published in ACS Appl. Energy Mater.
<p>The data in this spreadsheet was used to produce the figures in the paper</p><p>Authors:</p><p>Colleen Jackson, Michalis Metaxas, Jack Dawson, Anthony Kucernak</p><p>Title:</p><p>Nanostructured Catalyst Layer Allowing Production of Ultralow Loading Electrodes for Polymer Electrolyte Membrane Fuel Cells with Superior Performance</p><p>Journal:</p><p>ACS Appl. Energy Mater. </p><p>DOI:</p><p>10.1021/acsaem.3c01987</p><p>Please cite the above reference if you wish to use this data</p><p>DOI of data:</p><p>10.5281/zenodo.10256698</p>
A tunable family of CAAC-ruthenium olefin metathesis catalysts modularly derived from a large-scale produced ibuprofen intermediate
<p>Data confirming the structure of the new compounds obtained within the project, published in <br><i><strong>Chem. Sci.</strong></i>, 2023,<strong>14</strong>, 10744-10755</p><p>The research was supported by the National Science Centre, Poland (OPUS grant DEC-2017/27/B/ST5/02563).</p>
Non-crystalline Zeolitic Imidazolate Frameworks Tethered with Ionic Liquids as Catalysts for CO2 Conversion into Cyclic Carbonates
<p>This folder /final_logs/ contains the DFT-optimized geometries (in .xyz format together with the gas-phase energy, E) accompanying the paper</p> <p>"Design of Non-crystalline Zeolitic Imidazolate Frameworks Tethered with Ionic Liquids as Highly Active and Stable Catalysts for Mild CO2 Conversion into Cyclic Carbonates"</p> <p>where conformers occur, they are always named from the lowest Gibbs energy to the highest in ascending order from c1 (sometimes omitted), c2, c3, ...</p> <p> </p>
Water-assisted generation of catalytic interface: The case of supported Pt-FeOx(OH)y catalysts for preferential carbon monoxide oxidation
<p>Open data for "Water-assisted generation of catalytic interface: The case of supported Pt-FeOx(OH)y catalysts for preferential carbon monoxide oxidation"</p>
Exploring the interfacial behavior of ruthenium complexes in ionic liquids: implications for supported ionic liquid phase catalysts, DOI: 10.1039/D4CP00247D
<p>The interaction of metal complexes with ionic liquids, with a particular focus on the stability and surface concentration of the metal centers, is crucial in applications involving catalysts based on supported ionic liquids. In this study, we synthesized the complexes [Ru(tpy)(bpy)Cl][PF<sub>6</sub>] and [Ru(tpy)(dcb)Cl][PF<sub>6</sub>] (tpy = 2,2′,2′′-terpyridine, bpy = 2,2′-bipyridine, dcb = 4,4′-dicarboxy-2,2′-bipyridine) and we prepared solutions using the ionic liquids (ILs) 1-ethyl-3-methylimidazolium acetate [C<sub>2</sub>C<sub>1</sub>Im][OAc] and 1-butyl-3-methylimidazolium hexafluorophosphate [C<sub>4</sub>C<sub>1</sub>Im][PF<sub>6</sub>]. The chemical environment of the Ru(II) metal center and the interfacial behavior of the complexes in the different IL solutions were determined using angle-resolved X-ray photoelectron spectroscopy (ARXPS). In [C<sub>4</sub>C<sub>1</sub>Im][PF<sub>6</sub>], [Ru(tpy)(bpy)Cl][PF<sub>6</sub>] maintains its chemical structure, while in [C<sub>2</sub>C<sub>1</sub>Im][OAc], partial changes in the chemical environment of the Ru center are indicated by XPS, likely due to ligand exchange. The presence of carboxylic acid functional groups in the bipyridyl ligand seems to inhibit this ligand exchange. The investigated complexes do not exhibit surface activity but are depleted from the IL/gas interface. These findings hold significance for the design of new supported ionic liquid phase catalysts based on Ru complexes.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.