Sentences with phrase «hydrogen gas at»

So pushing 10A through a fully charged standard 6 - cell battery for one hour would produce 0.45 l / Ah x 6 x 10A x 1 h = 27 l of hydrogen gas at 25C.

At first they used conditions in which no water was present (remember, they used water stand - ins), and the catalyst could create hydrogen gas at a rate of about 33,000 molecules per second.

The California Nebula, named for its resemblance to the state, is the cloud of glowing red hydrogen gas at left.

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.

Not exact matches

In 2011 General Fusion had what at first looked like a successful test of its plasma injector, a funnel - shaped machine where plasma is created from super-heated hydrogen gas.

For instance, if the earth were slightly larger, hydrogen, a light gas, could not escape into the atmosphere at its prescribed rate (due to an increase in the earth's gravitational field), and over time would build up and cause life to cease.

On the other hand, of the earth were slightly larger, gravity would be stronger and then the light gas of hydrogen (much lighter than air) would not disperse into space at its now prescribed rate, eventually resulting in the earth being unable to sustain life.

If the earth were slightly larger, having a stronger gravitational force, it would prevent hydrogen, a light gas, from escaping at a specified rate, building up in our atmosphere and eventually rendering our planet lifeless.

Hydrogen, which can be produced from natural gas through Steam Methane Reforming - at which point the carbon needs to be captured - is the ultimate green gas: it emits no carbon when combusted.

The resulting gas — almost all hydrogen and helium — was transparent, allowing photons to zip freely through space at last.

But Rothenberger and others at the meeting emphasized that a viable hydrogen storage material would have to give up the gas when it is needed.

The reaction rate between atmospheric hydrogen chloride (HCl) and chlorine nitrate (ClONO2) is greatly enhanced in the presence of ice particles; HCl dissolves readily into ice, and the collisional reaction probability for ClONO2 on the surface of ice with HCl in the mole fraction range from ∼ 0.003 to 0.010 is in the range from ∼ 0.05 to 0.1 for temperatures near 200 K. Chlorine (Cl2) is released into the gas phase on a time scale of at most a few milliseconds, whereas nitric acid (HNO3), the other product, remains in the condensed phase.

The team also ran the process at different speeds, with different ratios of methane and hydrogen gas, and characterized the quality of the resulting graphene after each run.

Like hydrogen, oxygen, and iodine, nitrogen normally exists as two - atom molecules in the form of a gas at room temperature.

At high heat, the cladding interacts with the surrounding water vapor, binding tightly to the oxygen and freeing the hydrogen, which escapes as a gas.

While the foil rolls through the first tube, it heats up to a certain ideal temperature, at which point it is ready to roll through the second tube, where the scientists pump in a specified ratio of methane and hydrogen gas, which are deposited onto the heated foil to produce graphene.

At present, industrial hydrogen is produced from natural gas using a process that consumes a great deal of energy while also releasing carbon into the atmosphere, thus contributing to global carbon emissions.

But it's a gamble at best to think natural gas vehicles will roll out quickly enough to spread fueling stations across the country so that FCEVs can have access to hydrogen.

There's also currently no cost - effective way to capture the carbon dioxide produced in making hydrogen from natural gas on site at a fueling station, which would undermine any climate benefits.

In contrast, hydrogen stays gaseous, and at high pressure it is also an effective greenhouse gas.

«It wouldn't be a great strategy for natural gas people to hope and wait for hydrogen fuel cell vehicles in order to make a mutual strategy,» said Nicholas Lutsey, program director at the International Council on Clean Transportation.

To their surprise, the ice bubbled like boiling water at temperatures between -210 C / -346 F and -120 C / -184 F. Analysis of the gas showed it to be hydrogen molecules, which the researchers believe were formed from methanol and ammonia broken up by UV irradiation.

Canadian company Carbon Engineering is combining captured CO2 with hydrogen gas to generate synthetic gasoline at its pilot plant north of Vancouver.

But existing hydrogen sensors are too sluggish to monitor a continuous stream of hydrogen gas, so combustion engines can't precisely vary the amount of hydrogen they need at a given time.

Kourosh Kalantar - Zadeh, an engineer at the Royal Melbourne Institute of Technology in Australia, and his colleagues built plastic capsules about 2.5 centimeters long — about as long as a Jolly Rancher hard candy — that sniff out carbon dioxide, hydrogen and oxygen gas molecules in the gut.

Natural gas blended with renewable hydrogen also produces less emissions than regular natural gas when used at a power plant or as a transport fuel.

To test this, Laricchia's team fired positronium atoms at 1100 to 4400 kilometres per second into various gases, including hydrogen, krypton and water vapour.

Eventually, he adds, the technology might generate hydrogen at a fueling station or even aboard a vehicle, thus avoiding the expense and hassle of storing and transporting hydrogen gas.

«However, we found that the molecular hydrogen gas is also blown from the in - falling galaxy,» says Suresh Sivanandam of the Dunlap Institute at the University of Toronto, «much like smoke blown from a candle being carried into a room.»

Several companies are already using renewable sources of gas to make hydrogen at large - scale steam - reformation facilities and on - site production plants.

Previously, researchers have produced hydrogen gas in microbial - powered, batterylike fuel cells, but only when they supplemented the energy produced by the bacteria with electrical energy from external sources — such as that obtained from renewable sources or burning fossil fuels, says Bruce Logan, an environmental engineer at Pennsylvania State University, University Park.

The previous code was developed for flammable gases in an industrial setting, which carries different risks compared to hydrogen fuel at a fueling station.

Units 1 and 3 have experienced explosions that destroyed exterior walls, apparently from buildups of hydrogen gas produced by the zirconium in the fuel rods reacting with coolant water at extremely high temperatures — but the interior containment vessels there thus far seem to be intact.

The process discovered at Ames Laboratory uses mechanical ball milling in the presence of hydrogen gas and is performed at room temperature.

A study by researchers at Sandia National Laboratories concludes that a number of existing gas stations in California can safely store and dispense hydrogen, suggesting a broader network of hydrogen fueling stations may be within reach.

A recent report by Sandia National Laboratories asks whether hydrogen fuel can be accepted at any of the 70 California gas stations involved in the study, based on a new hydrogen technologies code.

James A. Dumesic and his colleagues at the University of Wisconsin, Madison developed a platinum - based catalyst that breaks down glucose extracted from plant and animal matter into hydrogen gas, carbon dioxide and methane.

Baking that at 750 degrees Celsius (1,382 degrees Fahrenheit) in the presence of nitrogen and hydrogen gas reduced the graphene and locked nitrogen atoms to the surface, providing sites where ruthenium atoms could bind.

Direct measurement of the absorption features in the spectrum of the afterglow toward GRB 130606A, located at a great distance, revealed the proportion of neutral hydrogen gas absorbing the light in its vicinity.

If an object already existed at a time re-ionization was occurring, it must have had some neutral hydrogen gas surrounding it.

Ideally smaller - scale factories would also be able to make hydrogen peroxide on site, but this would require a completely different set of chemistry, direct synthesis of H2O2 from hydrogen and oxygen gas, which has long been poorly understood according to researchers at the University of Illinois at Urbana - Champaign.

Astronomers often search for gas by observing neutral hydrogen, which broadcasts radio waves at a wavelength of 21 centimetres.

Hydrogen trioxide is stable at low temperatures but begins to decompose slowly at -40 degreesC, forming so - called singlet oxygen, a high - energy form of the gas which can be detected by its reaction with dimethylanthracene.

In only two weeks of driving, the district coordinator of science for the Port Chester, N.Y., public school system has driven at least 600 miles (965 kilometers) on the car and her fuel cell Equinox has gotten as much as 191 miles (307 kilometers) on its three full tanks (each holding slightly more than four kilograms, or 8.8 pounds, of compressed hydrogen gas).

The solution Boyd hit upon was to use a system first developed in the 1960s to generate a hydrogen plasma — that is, hydrogen gas that has been electrified to separate the electrons from the protons — to remove the copper oxide at much lower temperatures.

Two other students and O'Keefe settled at a vent, measuring the temperature at the opening and the velocity of the gases (including carbon monoxide, carbon dioxide, hydrogen sulfide, methane, and oxygen) that were flowing out.

At present, the edge of the heliosphere holds up a dense sheet of gas, what astronomers call the «hydrogen wall.»

At the heart of the Compass tokamak reactor is a doughnut - shaped chamber containing hydrogen gas.

This new look at MOFs led to a discovery that holds promise for the improved design of MOFs tailored specifically for carbon capture, or for the use of hydrogen and natural gas (methane) fuels.

All that existed was hydrogen and helium gas that was very hot but scattered across such huge distances that it barely seemed to be there at all.