Hydrogen

Artificial hydrogenases

“…The process is estimated to be 60–85% energy-efficient and uses Ni catalysts. [5] Carbon-neutral routes to H 2 mainly rely on the decomposition of water. High temperature electrolysis is even more efficient than steam reforming but is not competitive because of the high price of electricity.…”

Optimization of non-oxidative carbon-removal techniques by nitrogen-containing plasmas

“…Strong variations of ammonia concentration in the plasma doesn't change erosion rates significantly (from $9 to 13 nm/min) but an increase in the plasma current produces a higher erosion rate (from $12 to 17 nm/min for the same concentration). All the detected products are formed by endothermic reactions (HCN has a formation enthalpy of 132 kJ/ mol, C 2 N 2 307.2 kJ/mol, C 2 H 2 kJ/mol, CH 3 CN 71.5 kJ/mol [17]), so part of the energy supplied to the plasma is consumed in the formation of these products. This could be partially responsible of the dependence with plasma current, but further research is needed to assess this point.…”

“…It has also the advantage of being free from water production [2][3][4]. In a hypothetical reactor, the use of ammonia would lead to the formation of tritiated ammonia, but tritium recovery from ammonia is an efficient process at low pressure and high temperature ($800°C) and is easily decomposed to H 2 and N 2 catalyzed by iron or nickel [17].…”

Synergistic Effect in Photoelectrochemical Hydrogen Evolution by RGO‐Supported Nickel Molybdenum Catalysts

“…Hydrogen is one of the most promising energy carriers for providing a clean, economically viable and sustainable energy . There are several methods available for the generation of hydrogen but generating hydrogen through electrolysis of water attracts large attention as it involves zero carbon emission . Electrochemical reduction of the water to hydrogen or Hydrogen Evolution Reaction (HER) still faces a serious issue of expensive electrocatalysts used for this process.…”