Sentences with phrase «oxide catalyst»

A near - infinite source of methane is available via the reaction of limestone and water using an iron oxide catalyst.

With this knowledge, we can devise and design improvements on the cobalt oxide catalyst and its support environment to partially or completely remove these bottlenecks and improve the efficiency of water oxidation.»

Methods: In the experiments, the researchers dispersed or spread the vanadium oxide catalyst on a support of titanium dioxide to create a relatively large surface area with more reactive sites.

However, a research team led by the Department of Energy's Oak Ridge National Laboratory has created the first high - performance, two - way oxide catalyst and filed a patent application for the invention.

«Researchers use strain to engineer first high - performance, two - way oxide catalyst.»

This catalyst has demonstrated specific activity at 10 milliamps per square centimeter of oxide catalyst (OER current normalized to catalyst surface area), with only 270 to 290 millivolts of overpotential for 30 hours of continuous testing in acidic electrolyte.

The idea is to use lithium ions to chemically break the metal oxide catalyst into smaller and smaller pieces.

«Because neutron spectroscopy could «see» hydrogen due to its large neutron scattering cross-section, it succeeded where optical spectroscopy techniques failed and enabled the first direct observations of cerium hydrides both on the surface and in the bulk of a cerium oxide catalyst,» Wu said.

In 2011, researchers led by Richard Masel, a chemist and CEO of Dioxide Materials in Boca Raton, Florida, tested a setup with silver and iridium oxide catalysts and a liquid electrolyte to promote the CO2 to CO reaction.

Development of Solar Fuels Photoanodes through Combinatorial Integration of Ni - La - Co-Ce and Ni - Fe - Co-Ce Oxide Catalysts on BiVO4.

Joel A. Haber, «Development of Solar Fuels Photoanodes through Combinatorial Integration of Ni - La - Co-Ce Oxide and Ni - Fe - Co-Ce Oxide Catalysts on BiVO4»

Development of solar fuels photoanodes through combinatorial integration of Ni - La - Co-Ce oxide and Ni - Fe - Co-Ce oxide catalysts on BiVO4.

High throughput, multi-pH evaluation of earth - abundant pseudo-quaternary metal oxide catalysts for the oxygen evolution reaction J. Haber, D. Guevarra, R.J.R. Jones, K. Kan, J. Gregoire

Dr. Peden is also currently a principal investigator and program leader of a new multi-institution research effort, funded by the Basic Energy Sciences Division of the U.S. Department of Energy, aimed at developing a fundamental understanding of oxide - supported transition metal oxide catalysts.

Development of solar fuels photoanodes through combinatorial integration of Ni — La — Co — Ce oxide catalysts on BiVO4.

He has published more than 350 research papers, notably in the area of modeling the structure and reactivity of transition metal oxide catalysts and zeolites, and he has given more than 440 invited lectures.

Represented Union Carbide in a case involving Union Carbide's patent on ethylene oxide catalysts and processes for making ethylene oxide.

Not exact matches

Wang and his colleagues discovered that nickel - iron oxide, which is cheap and easy to produce, is actually more stable than some commercial catalysts made of precious metals.

In the catalytic converter, the catalyst cerium oxide grabs oxygen from air and adds it to carbon monoxide and hydrocarbons to turn them into carbon dioxide, which is nonlethal.

This teamwork was essential to providing a deeper understanding of the interaction between molecular hydrogen and cerium oxide - based catalysts.

«Our water splitter is unique, because we only use one catalyst, nickel - iron oxide, for both electrodes,» said graduate student Haotian Wang, lead author of the study.

But this solution of cobalt oxide could be a major step forward in finding an efficient catalyst for photosynthesis.

Catalysts, such as metal oxide supported precious metals like platinum and gold, are used to lower the reaction temperature and increase the production of hydrogen.

By oxidation or reduction, i.e. the donation or acceptance of electrons, the catalysts convert combustion pollutants, such as carbon monoxide, nitrogen oxides and hydrocarbons, into carbon dioxide, water, and nitrogen.

One novel contribution in the course of this research has been the synthesis and identification of a new compound — calcium glycerolate — «which notably surpasses calcium oxide and glyceroxide in stability and makes it a very good candidate for the development of heterogeneous catalysts for the synthesis of biodiesel.»

Here we report an iridium oxide / strontium iridium oxide (IrOx / SrIrO3) catalyst formed during electrochemical testing by strontium leaching from surface layers of thin films of SrIrO3.

In the case of auto emissions, instead of current catalysts that are inactive below 200 degrees Celsius, Lewis» gold and silver nano - catalysts would be able to react at room temperature and help remove harmful emissions including carbon monoxide, nitrogen oxides and hydrocarbons.

«Platinum and iron oxide working together get the job done: Scientists have figured out how a platinum catalyst works.»

Adding the cerium oxide to the catalyst is a simple process, too, with no exotic precursors needed.

The work builds on research, published in Science last year, in which the Wang and Datye groups found a novel way to trap and stabilize individual platinum atoms on the surface of cerium oxide, a commonly used component in emissions control catalysts.

Catalysts have been an integral part of diesel - and gasoline - powered engines since the mid-1970s as federal regulations called for reductions of carbon monoxide, hydrocarbons and nitrogen oxides.

Wang's research group designed a five - metal catalyst based on these high - entropy - alloy nanoparticles and demonstrated superior catalytic performance for selective oxidation of ammonia to nitrogen oxide, a reaction used by the chemical industry to produce nitric acid, an important chemical in the large - scale production of fertilizers and other products.

They engineered it so that one end carries a catalyst — iridium oxide.

The nano - catalyst filter uses a technology that decomposes elements of cigarette smoke using oxygen radical, which is generated by decomposing ozone in the air on the surface of the manganese - oxide - based nano - catalyst filter.

These new catalysts are produced through the simultaneous control of the: 1) composition, 2) size and 3) crystallinity of metal oxides of earth - abundant elements such as iron, cobalt and nickel.

«Up until now, rechargeable zinc - air batteries have been made with expensive precious metal catalysts, such as platinum and iridium oxide.

This is a rechargeable zinc - oxide battery in a tri-electrode configuration with cobalt - oxide / carbon nanotube and iron - nickel / layered double hydroxide catalysts for charge and discharge, respectively.

The research team led by Dr. Jongsoo Jurng and Dr. Gwi - Nam at KIST stated that, «In cooperation with KT&G, KIST has developed a nano - catalyst filter coated with a manganese oxide - based nano - catalyst, which can be used in a smoking room to reduce and purify major harmful substances of cigarette smoke.

«Remarkably, simple treatment of the graphene - molybdenum oxides with sulfur, which converted the metal oxides to metal sulfides, afforded a hydrogen evolution reaction catalyst, underscoring the broad utility of this approach,» he said.

For example, titanium dioxide is a catalyst that degrades pollutants, and aluminum oxides and iron oxides are coagulants used as the first step in purifying drinking water.

The catalyst in this case was a thin film crystal, grown to be as flat as possible, with one layer made from iridium oxide and another layer made from strontium iridium oxide.

Understanding these effects is also important for other applications such as splitting water molecules to produce hydrogen at solid - liquid interfaces, electronic devices that rely on oxide - oxide interfaces, or other electrochemical processes using these materials as catalysts, where defects serve as the sites that enable the interactions.

To make a truly large - scale impact, the company may need to find cheaper electrode catalysts than silver and iridium oxide, says Haotian Wang, a chemist at Harvard University.

In the catalytic converter, the catalyst cerium oxide grabs oxygen from air and adds it to carbon monoxide and hydrocarbons to turn them into CO2, which is nonlethal.

Researchers at the Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, have developed a new catalyst based on nickel oxide on magnesium oxide (NiO / MgO) that is effective for the bi-reforming with steam and CO2 (combined steam and dry reforming) of methane as well as natural gas... Read more →

In most zeolite catalysts, nitric oxide is essentially a barbell combining a nitrogen atom and an oxygen atom.

This computer model of a zeolite catalyst shows nitric oxide (ball - and - stick) interacting with a positively charged copper ion (copper ball) at an unexpected angle (red dotted lines).

Dr. Peden has written or contributed to more than 160 peer - reviewed scientific publications on the kinetics and mechanisms of automobile exhaust catalysis; the development of zeolite catalysts for diesel engine emission control; hydrocarbon reforming over bimetallic catalysts; the structure of hydroprocessing catalysts; the development of novel, supported solid acid catalysts for petroleum refining; the growth and properties of oxide and semiconductor thin films; and model studies of adhesion at metal / metal - oxide interfaces.

A team of researchers led by University of Amsterdam (UvA) chemists has developed new Fischer - Tropsch catalysts — consisting of ultra-thin cobalt shells surrounding inexpensive iron oxide cores — that can be used to produce synthetic fuels from natural gas and biomass.

When the researchers looked under the microscope at catalyst material formed with alpha - aluminum oxide, platinum atoms formed balls that tottered around on the surface instead of tidy rafts.