2022. Indication of hydrogen and oxygen stable isotopes on the characteristics and circulation patterns of medium-low temperature geothermal resources in the Guanzhong Basin, China. Journal of Groundwater Science and Engineering, 10(1): 70-86. doi: 10.19637/j.cnki.2305-7068.2022.01.007 ...
It shall be designed to have a vapour-tight seal in the outer covering to prevent the condensation of air and subsequent oxygen enrichment within the insulation. The insulation material and outer covering shall also be of adequate design to prevent attrition of the insulation due to normal ...
Generally, the overall reaction of water electrolysis can be divided into two half-cell reactions: hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). HER is the reaction where water is reduced at the cathode to produce H2, and OER is the reaction where water is oxidized at...
In Chemkin, swirl is also included, and the equation takes the form:w(ms)=[C11+C12vsSp‾]S‾pC2VdTrprVr(p−pm)Where S‾p is the mean piston speed, C is the absolute gas velocity, subscript ‘r’ refers to the working fluid and pm is the motored pressure. 2.4. Data ...
Hydrogen spillover is the migration of activated hydrogen atoms from a metal particle onto the surface of catalyst support, which has made significant progress in heterogeneous catalysis. The phenomenon has been well researched on oxide supports, yet its
This result may be due to hydrodeoxygenation pathways, that removed the oxygen leading to propane. The APR-H2 selectivity was up to two orders of magnitude higher than the usual values, and for this reason it was not reported in the relative graph. This result, that is at first sight ...
The oxygen reduction reaction (ORR) is the reaction occurring at the cathode, which governs the energy transfer efficiency of metal–air batteries and fuel cells, while the hydrogen evolution reaction (HER) is probably one of the most effective approaches to producing pure hydrogen massively. At ...
The molar vaporisation/sublimation enthalpies of methoxy-biphenyls were derived from the temperature dependences of the vapour pressures, approximated by Equation (3) using the following equation: Δgcr,l𝐻om(𝑇)=−𝑏+Δgcr,l𝐶o𝑝,m×𝑇Δcr,lgHmoT=−b+Δcr,lgCp,mo×T (3) wh...
The Space Shuttle Main Engine burnt hydrogen with oxygen, producing a nearly invisible flame at full thrust. Hydrogen gas (dihydrogen or molecular hydrogen)[17] is highly flammable: 2 H2(g) + O2(g) → 2 H2O(l) (572 kJ/2 mol = 286 kJ/mol = 141.865 MJ/kg)[note 2] The enthalpy of...
Hydrogen gas must be used with caution because it is highly flammable; it forms easily ignited explosive mixtures with oxygen or with air (because of the oxygen in the air). At high temperatures hydrogen is a chemically active mixture of monohydrogen (atomic hydrogen) and the normal diatomic ...