Papers – Page 26 – TechConnect Briefs

Optimization of Catalyst Nano-structures through Alloying and De-alloying Process—Research on Ag-Co catalyst for Catalytic Oxygen Reduction in Alkaline Media

Jiang R., U.S. Army Research Laboratory, US

Optimization of particle size and particle’s nano-structure at the atomic level can precisely and effectively tune catalytic properties of materials, and enabling enhancement in both catalytic activity and stability. We synthesized a highly active and [...]

Colloidal Palladium Nanoparticles versus Commercial Palladium Catalysts for Suzuki Cross Coupling Reactions – The Influence of Surface Functionalization

Collins G., ODywer C., Holmes J.D., University College Cork and Tyndall National Institute, IE

The Suzuki-Miyaura reaction is a highly utilised reaction for aryl-aryl bond formation in organic synthesis due it is versatility. The motivation for the application of heterogeneous catalysts in these systems is the easy recovery and [...]

Biomimetic Nanoreactors via in situ Synthesis of Atomically-Thin Gold Sheets and Platinum Nanoclusters

McTaggart M., Malardier-Jugroot C., Jugroot M., Malardier-Jugroot C., Royal Military College of Canada, CA

We present the synthesis and activity of broadly stable polymer-metal nanoreactors capable of confinement-enhanced catalysis. Poly(styrene-alt-maleic acid), SMA, is known to self-assemble in water into highly organized supramolecular nanostructures containing confined polar and non-polar reaction [...]

Bimetallic Nanoparticles for Advanced Energy Conversion Technologies

Sims C.M., Eichhorn B.W., University of Maryland, US

Proton exchange membrane fuel cells (PEMFC) are highly regarded as a clean alternative energy technology for motor vehicles, power generators, etc. One factor hindering their commercial viability is the poisoning of the hydrogen oxidation reaction [...]

Ni-supported Pd nanoparticles: a new catalyst for low-temperature ammonia cracking

Polanski J., Bartczak P., Sitko R., Siudyga T., Mianowski A., Szade J., Lelatko J., University of Silesia, PL

Ammonia cracking is a method used in the treatment of flue gases from coal or biomass gasification or for hydrogen generation in chemical or related industries. It is an important issue in hydrogen economies. As [...]

Renewables-source Hydrogen Systems: Alternatives to Electricity for Transmission, Storage, and Integration

Leighty B., The Leighty Foundation, US

Electricity systems will be inadequate to humanity's urgent task of rebuilding its largest industry -- energy -- from ~85% fossil today to 100% renewable sources by Year 2100. To supply all energy, from all sources [...]

Gasification Technology Developed for the Production of Renewable Hydrogen

Dodd D.M., Hazard J., Sierra Energy, US

Hydrogen fuels from renewable sources are considered some of the most promising alternative fuels for reducing oil consumption, greenhouse gas emissions, and air pollution. Sierra Energy’s FastOx technology is a ﬁxed-bed gasification system that breaks [...]

Tuning of Nafion® by HKUST-1 as coordination network to Enhance Proton Conductivity for Fuel Cell Applications

Kim H.-J., Talukdar K., Choi S-J, Kyungpook National University, KR

MOFs have highly ordered structures and modular nature that can serve as a scaffold to anchor acidic groups and improve efficient proton transfer pathways. HKUST-1, a MOF material containing CuII–paddle wheel type nodes and 1,3,5-benzenetricarboxylate [...]

Catalytic Performance Enhancement by Low Temperature Plasma Treatment

Miley G.H., Srivastava S.N., Chen G., UiUC/NPL Associates, US

Polymer Electrolyte Membrane (PEM) fuel cell electrocatalysts are composed of noble metals (e.g. platinum), which are scarce and expensive. A simple plasma-surface modification method is described to increase the performance of PEM fuel cell catalytic [...]

Electrocatalytic activity of core-shell carbon-metal nanocomposites derived from carbon dioxide

Lee J.W., Zhang J., Kim Y., Byeon A., Korea Advanced Institute of Science and Technology, KR

The polymer electrolyte fuel cells(PEFCs) have demonstrated one of promising devices to convert chemical energy of fuels with high energy efficiency, high power density, and low environment impact. Despite wide applications in many areas, the [...]