Sentences with phrase «catalyst for hydrogen»

Using a natural catalyst from bacteria for inspiration, researchers have now developed the fastest synthetic catalyst for hydrogen production — producing 45 million molecules per second.

The scientists took the well - characterized nickel - based catalyst for hydrogen production previously synthetized at PNNL and built a dozen different versions by adding either a single synthetic amino acid or a dipeptide, consisting of two molecules.

«Recipe for low - cost, biomass - derived catalyst for hydrogen production.»

Cobalt atoms shine in an electron microscope image of a new catalyst for hydrogen production invented at Rice University.

«The research team has provided a new perspective in designing and improving non-precious metal - based catalysts for hydrogen production,» said Lin.

There are many start - ups and research teams out there making breakthroughs in alternative catalysts for hydrogen production.

Not exact matches

For example, the nanoparticle catalyst converted 99 % of dimethylphenylsilane to the corresponding silanol in just 9 min at room temperature, releasing an equimolar amount of hydrogen gas at the same time.

White's group is working on catalysts that can modify a wider range of amino acids, particularly those with electron - rich aromatic functionality, which compete with the carbon - hydrogen bonds for oxidation using the current catalyst.

The nanoparticle catalyst displayed the highest turnover frequency and number attained to date for hydrogen production catalysts from organosilanes.

UNSW Sydney chemists have invented a new, cheap catalyst for splitting water with an electrical current to efficiently produce clean hydrogen fuel.

Until now, however, this chemical was not considered a good catalyst for making moly sulfide to produce hydrogen from water through electrolysis.

Further studies will also employ another beam line, NOMAD, to characterize the exact structure of both the surface and bulk hydride in the catalyst to reveal, for example, if oxygen vacancies form channels in the bulk to bring in hydrogen and spur further hydride formation.

University researchers from two continents have engineered an efficient and environmentally friendly catalyst for the production of molecular hydrogen (H2), a compound used extensively in modern industry to manufacture fertilizer and refine crude oil into gasoline.

«We believe that electrochemical tuning can be used to find new catalysts for other chemical fuels beyond hydrogen.

Graphene doped with nitrogen and augmented with cobalt atoms has proven to be an effective, durable catalyst for the production of hydrogen from water, according to scientists at Rice University.

An efficient, low - cost catalyst is essential for realizing the promise of hydrogen as a clean, environmentally friendly fuel.

Currently, the most efficient catalysts for the electrochemical reaction that generates hydrogen from water are based on platinum, which is scarce and expensive.

Rice University scientists have created an efficient, simple - to - manufacture oxygen - evolution catalyst that pairs well with semiconductors for solar water splitting, the conversion of solar energy to chemical energy in the form of hydrogen and oxygen.

A nanostructured composite material developed at UC Santa Cruz has shown impressive performance as a catalyst for the electrochemical splitting of water to produce hydrogen.

The work, which appears in the November 27, 2014, edition of Science Express, points to new avenues for producing single - site supported gold catalysts that could produce high - grade hydrogen for cleaner energy use in fuel - cell powered devices, including vehicles.

For decades, researchers tinkered with light - triggered catalysts that encourage water molecules to release hydrogen gas — but none of the catalysts were sufficiently cheap and stable.

«We have discovered a catalyst that can produce ready quantities of hydrogen without the need for extreme cold temperatures or high pressures, which are often required in other production and storage methods,» remarks Mahdi Abu - Omar of Purdue University.

For instance, the team could show that pre-treating with hydrogen should increase the efficiency of platinum catalysts.

Providing hydrogen for the process is expensive, and as oils get more sour, higher pressures and more stable catalysts are needed to break the sulfur bonds.

This synthesis route is capable of developing alternative catalysts of noble metals for many eco-friendly technologies such as fuel cell vehicles, hydrogen generation from water and CO2 reduction.

Titanium - based semiconductors are particularly popular as catalysts for solar water - splitting reactions to produce hydrogen, a clean renewable - energy source.

A major new discovery by scientists at the universities of Oxford, Cambridge and Cardiff in the UK, and the King Abdulaziz City for Science and Technology (KACST) in Saudi Arabia, has shown that hydrocarbon wax rapidly releases large amounts of hydrogen when activated with catalysts and microwaves.

Co-author Professor Sir John Meurig Thomas, from the Department of Materials Science and Metallurgy at the University of Cambridge, said the work could be extended so that many of the liquid components of refined petroleum and inexpensive solid catalysts can pave the way for the generation of massive quantities of high - purity hydrogen for other commercial uses, including CO2 - free energy production.

«New, more efficient catalyst for water splitting: Discovery could remove hurdle to producing hydrogen from water.»

Some of the most widely studied materials for direct hydrogen peroxide synthesis are palladium - based catalysts.

«The direct growth of anchored MoSoy nanocrystals on graphene sheets may enhance the formation of strongly coupled hybrid materials with intimate, seamless electron transfer pathways, thus accelerating the electron transfer rate for the chemical desorption of hydrogen from the catalyst, further reducing the energy required for the reaction to take place,» Sasaki said.

«If we understand where and how hydrogen peroxide primarily decomposes, we can propose some design criteria for future iterations of palladium catalysts.»

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.

Perhaps some unknown mineral on Titan acts as a catalyst to speed up the reaction of hydrogen and carbon to form methane, and that's what accounts for the vanishing hydrogen.

Scientists from Forschungszentrum Jülich and Technische Universität Berlin have succeeded in developing efficient metallic catalyst particles for converting hydrogen and oxygen to water using only a tenth of the typical amount of platinum that was previously required.

Many, many investigators have contributed over the years to the development of a form of artificial photosynthesis in which sunlight - activated catalysts split water molecules to yield oxygen and hydrogen — the latter being a valuable chemical for a wide range of sustainable technologies.

Among the areas of research that inspire Dr. Cui are: the development of new technologies to further the development of electric transportation; creating new battery chemistry for grid - scale storage at ultra-low cost; and harnessing low - cost technologies for the development of catalysts for efficient carbon dioxide reduction and conversion into highly valuable products and inert carbon - hydrogen bond activation.

D.M. Ginosar, L.M. Petkovic, A.W. Glenn, K.C. Burch, «Stability of supported platinum sulfuric acid decomposition catalysts for use in thermochemical water splitting cycles,» International Journal of Hydrogen Energy, 32, 482 - 488, 2007.

The next step is to test the new catalyst in devices incorporating electrodes and other components for converting the protons and electrons to hydrogen fuel — and then later, with light - absorbing compounds to provide energy to drive the whole reaction.

Researchers at the University of Erlangen - Nürnberg (Germany) report in the journal Angewandte Chemie their development of an enhanced platinum catalyst for the steam reforming of methanol to release hydrogen.

Direct liquefaction, by contrast, combines coal with hydrogen over a catalyst for the direct conversion to linear and ring - type hydrocarbons.

This particular discovery originated in prior work at Rochester that demonstrated quantum dots could be excellent catalysts for creating hydrogen - hydrogen bonds for solar fuel applications.

«This catalyst will pave the way for the development of high - performance, electrolysis - based hydrogen production applications.»

The key for energy storage via the creation of hydrogen gas lies in finding a low - cost catalyst whose turnover frequency and overpotential matches or exceeds that of platinum.

The team continues to uncover the basic design principles for catalysts capable of hydrogen oxidation and hydrogen production.

It will focus on catalyst development for four applications: proton exchange membrane fuel cells to convert stored energy in non-fossil fuels into electricity; electrolysers for splitting water into oxygen and hydrogen — a potential clean fuel cell source; syngas, a mixture of CO and H2, which is generated from coal, gas and biomass, and widely used as a key intermediate in the chemical industry; and lithium - air batteries.

For example, on the rhodium catalysts, the team's calculations showed that the carbon - carbon and carbon - hydrogen bond scissions are competitive, regardless of the rhodium particle size.

A new robust and highly active bifunctional catalyst developed by Rice University and the University of Houston splits water into hydrogen and oxygen without the need for expensive metals such as platinum.

The scientists correlated the various peaks observed in the NMR spectra with the catalysts» reactivity for an oxidation reaction that removes a hydrogen atom from methanol.

Solar - driven water splitting has been studied intensely for decades because it could provide a nearly limitless supply of clean - burning hydrogen if a suitable catalyst can be found.