Tensile tests in hydrogen atmosphere (30 bars) and atmospheric air at room temperature were compared, in the as-received materials as well as after aging in various conditions (pressure, temperature and duration).
Olefins that are free of such impurities as carbon monoxide, sulfur, halogen, and compounds of arsenic or lead (catalyst poisons), can be hydrogenated (i.e., combined with hydrogen) at atmospheric pressure and room temperature, using various types of active nickel preparations as catalysts.
The plant discards the oxygen — incidentally creating the part of the atmosphere that's the most important to us — and combines the hydrogen with atmospheric carbon dioxide to produce cellulose (the material out of which the plant builds its structure) and starch (the plant's fuel).
Most recently, the dream has centred on hydrogen-fuelled cars, powered by fuel cells electrochemical devices that combine stored hydrogen with atmospheric oxygen to generate electricity and water vapour.
They might also eventually find an economical way to replicate the far more challenging second stage of photosynthesis, in which hydrogen and atmospheric carbon dioxide combine to make a non-gaseous fuel — a breakthrough that would eliminate the problems associated with storing and transporting hydrogen.
The design of an on-board autothermal membrane reactor producing pure hydrogen at atmospheric pressure, while recuperating heat, is analyzed mathematically.
In-situ electron beam induced reduction in the TEM or reduction in hydrogen at atmospheric pressure at 200 250 °C was used for restructuring of the core shell particles and led to finely dispersed bismuth nanoparticles of 4 11 nm on the silica substrate particles.
The cell stack combines hydrogen with atmospheric gas to form chemical energy, which is then converted into electric power.
At optimal conditions, complete hydrogenation of acetophenone was achieved at atmospheric hydrogen pressure.
Accordingly, we concluded that PdAu alloys supported carbon exhibited a good catalytic performance for a selective hydrogenation of HMF to DMF using an atmospheric hydrogen pressure.
