Sentences with phrase «efficient catalyst»

That shape allows the enzyme to carry out specific chemical reactions — an enzyme acts as a very efficient catalyst for a specific chemical reaction.

The less energy needed to move the electrons, the more efficient the catalyst.

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

Phil De Luna is one of the lead authors of a new paper published in Nature Chemistry that reports a low - cost, highly efficient catalyst for chemical conversion of water into oxygen.

But the cost of producing it by using electricity to split water is high, because the most efficient catalysts developed so far are often made with precious metals, like platinum, ruthenium and iridium.

Why It Matters: Reducing refineries» energy demands or car and truck emissions requires efficient catalysts on durable support materials.

Australian scientists have paved the way for carbon neutral fuel with the development of a new efficient catalyst that converts carbon dioxide (CO2) from the air into synthetic natural gas in a «clean» process using solar energy.

To overcome these issues, the OIST Coordination Chemistry and Catalysis Unit led by Prof. Julia Khusnutdinova reported in ACS Catalysis novel and efficient catalysts based on an inexpensive and abundant metal: manganese.

The team is analyzing the performance of even more efficient catalysts used to convert biomass to high value fuels to understand their disruption mechanism and how the catalyst synthesis affects its efficiency and selectivity for the conversion reaction.

«The most efficient catalysts tend to be permeable and easily transform from one phase to another.

The most efficient catalysts spread the precious metals evenly over the surface of the oxide.

New guidelines laid down by Nebraska and Chinese researchers could steer the design of less costly, more efficient catalysts geared toward revving up the production of hydrogen as a renewable fuel.

Phil De Luna of University of Toronto is one of the lead authors of a new study that reports a low - cost, highly efficient catalyst for chemical conversion of water into oxygen.

They simply don't have the necessary properties to produce more efficient catalysts or solar cells that create, store, and use energy on a massive scale.

They also discovered just how their catalyst works, knowledge that could be used to design more efficient catalysts for a wide range of applications.

But in a new study appearing in the journal Science, University of Utah chemists captured enough data on the crucial steps in a reaction to accurately predict the structures of the most efficient catalysts, those that would speed the process with the least amount of unwanted byproducts.

At each round of copying some of the new RNA strands underwent mutations that turned them into more efficient catalysts, and once again we singled those out for the next round of copying.

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

They were able to achieve 100 percent oxidation of ammonia and 99 percent selectivity toward desired products with the high entropy alloy nanoparticles, proving their ability as highly efficient catalysts.

University of Utah chemists captured enough data on the crucial steps in a reaction to accurately predict the structures of the most efficient catalysts, those that would speed the process with the least amount of unwanted byproducts.

A few noble metals, such as gold and platinum, can avoid HER and convert CO2 to CO; however, these metals are relatively rare and too expensive to serve as cost - efficient catalysts.

The researchers discovered a new class of cheap and efficient catalyst to facilitate the water splitting process.

Swearer said the chemical industry already uses aluminum oxide materials that are dotted with palladium islands to catalyze reactions, but the palladium in those materials must be heated to high temperatures to become an efficient catalyst.

Chu and colleagues including physicists Zhifeng Ren and Shuo Chen, both of whom also are principal investigators with the Texas Center for Superconductivity at UH, report their discovery — an efficient catalyst produced without the expensive precious metals most commonly used — this week in the Proceedings of the Natural Academy of Sciences.

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

In turn, those reactions need an efficient catalyst to help them along.

Precious metals including platinum, palladium and iridium have proven to be efficient catalysts, but their high cost and poor stability and durability make them impractical for large - scale commercialization.

«A nano solution is needed to mass - produce resource - efficient catalysts for fuel cells.

The Tufts researchers discovered that dispersing individual, isolated platinum atoms in much less costly copper surfaces can create a highly effective and cost - efficient catalyst for the selective hydrogenation of 1,3 butadiene, a chemical produced by steam cracking of naphtha or by catalytic cracking of gas oil.

More efficient catalysts, sensors, and separators that last longer and work harder could reduce the energy demands and waste from manufacturing plants and refineries.

In summary: To create more efficient catalysts and separation devices, scientists would like to start with porous materials with controlled atomic - scale structures as random defects can hamper performance.

To create more efficient catalysts, sensing and separation membrane, and energy storage devices, scientists often start with particles containing tiny pore channels.

That is completely at odds with the characteristics of an efficient catalyst, which helps to split water to store the energy of light in chemical bonds,» said Sharp, who is also a staff scientist at Berkeley Lab's Chemical Sciences Division.

Scientists show how to fix interior defects, possibly leading to a more stable and efficient catalyst for biofuel production

Therefore, researchers are currently working to develop more efficient catalysts to facilitate the anode reaction.

In particular, the researchers will use their models to test their idea of combining abundant and cheap iron with miniscule amounts of precious metals to make an affordable and efficient catalyst for biofuel production.

Methods: The team is developing alternative, atom - efficient catalysts that have the potential significantly improve tar reforming performance over the traditionally used nickel - based hydrocarbon - reforming catalysts.

Researchers from China and the US have developed Pt − Co nanoparticles (NPs) which proved to be effective and efficient catalysts for aqueous - phase Fischer - Tropsch synthesis (FTS) at 433 K (160 °C)-- a lower operational temperature than can be achieved with conventional catalysts.

Creating and using such fuels requires a fast, efficient catalyst.

Eight - armed nanoparticles of gold coated with a gold - palladium alloy proved to be both efficient plasmonic sensors and efficient catalysts, even though gold alone is not normally a good catalyst and palladium is a poor plasmonic material.

These particles act as highly efficient catalysts that greatly reduce the required energy to split water in hydrogen and oxygen.

[Translate] FUTURISM In Brief Scientists have discovered a low - cost, efficient catalyst for splitting water to create hydrogen.

Researchers from China and the US have developed Pt − Co nanoparticles (NPs) which proved to be effective and efficient catalysts for aqueous - phase Fischer - Tropsch synthesis (FTS) at 433 K (160 °C)-- a lower operational temperature than can be achieved with conventional catalysts.