non-catalytic hydrogenation takes place only at very high temperatures. Hydrogenation reduces double and triple bonds in hydrocarbons. Hydrogenation has three...
38 KB (4,071 words) - 16:46, 23 June 2024
cleavage of bonds by hydrogen. Illustrative is the separation of sulfur from liquid fossil fuels: R2S + 2 H2 → H2S + 2 RH Hydrogenation, the addition of H2...
121 KB (12,377 words) - 17:19, 7 September 2024
Fat hydrogenation is the process of combining unsaturated fat with hydrogen in order to partially or completely convert it into saturated fat. Typically...
17 KB (1,667 words) - 17:48, 3 August 2024
need for high-pressure molecular H2 used in conventional hydrogenation. Transfer hydrogenation usually occurs at mild temperature and pressure conditions...
13 KB (1,292 words) - 14:45, 29 February 2024
Asymmetric hydrogenation is a chemical reaction that adds two atoms of hydrogen to a target (substrate) molecule with three-dimensional spatial selectivity...
64 KB (6,355 words) - 10:03, 21 August 2024
typically by hydrogenation on a palladium catalyst. In the presence of oxygen, the anthrahydroquinone then undergoes autoxidation: the labile hydrogen atoms...
91 KB (9,240 words) - 06:02, 6 September 2024
Hydrogen gas is produced by several industrial methods. Nearly all of the world's current supply of hydrogen is created from fossil fuels.: 1 Most hydrogen...
111 KB (11,007 words) - 06:33, 29 August 2024
Hydrogenics is a developer and manufacturer of hydrogen generation and fuel cell products based on water electrolysis and proton-exchange membrane (PEM)...
16 KB (1,473 words) - 13:31, 1 November 2023
Hydrogen safety covers the safe production, handling and use of hydrogen, particularly hydrogen gas fuel and liquid hydrogen. Hydrogen possesses the NFPA...
57 KB (4,410 words) - 06:39, 27 August 2024
Hydrogen embrittlement (HE), also known as hydrogen-assisted cracking or hydrogen-induced cracking (HIC), is a reduction in the ductility of a metal due...
38 KB (4,332 words) - 16:39, 5 September 2024
includes hydrogen trains, zero-emission multiple units, or ZEMUs — generic terms describing rail vehicles, large or small, which use on-board hydrogen fuel...
38 KB (3,921 words) - 08:02, 5 September 2024
Hydrogen (1H) has three naturally occurring isotopes, sometimes denoted 1 H , 2 H , and 3 H . 1 H and 2 H are stable, while 3 H has a half-life of 12.32(2)...
17 KB (2,027 words) - 20:39, 26 August 2024
Green hydrogen (GH2 or GH2) is hydrogen produced by the electrolysis of water, using renewable electricity. Production of green hydrogen causes significantly...
66 KB (6,204 words) - 14:05, 21 August 2024
utilize CO2 at the point source, CO2 hydrogenation is a realistic and practical approach. Conventional hydrogenation reduces unsaturated organic compounds...
134 KB (14,151 words) - 03:23, 2 September 2024
Natural hydrogen (known as white hydrogen, geologic hydrogen, geogenic hydrogen, or gold hydrogen), is hydrogen that is formed by natural processes (as...
18 KB (1,882 words) - 12:49, 2 September 2024
In chemistry, a hydrogen bond (or H-bond) is primarily an electrostatic force of attraction between a hydrogen (H) atom which is covalently bonded to a...
46 KB (5,422 words) - 04:08, 12 August 2024
The compound hydrogen chloride has the chemical formula HCl and as such is a hydrogen halide. At room temperature, it is a colorless gas, which forms white...
27 KB (2,805 words) - 05:57, 13 August 2024
Generation IV reactor Hydrogen bomb Dehydrogenation Hydrogenation Hydrogenolysis Hydrogen odorant Atomic hydrogen welding Hydrogen-cooled turbogenerator...
13 KB (1,232 words) - 04:07, 17 August 2024
favorable thermodynamics for the hydrogenation of sulfur implies that the dehydrogenation (or cracking) of hydrogen sulfide would require very high temperatures...
76 KB (7,951 words) - 00:23, 5 September 2024
A hydrogen carrier is an organic macromolecule that transports atoms of hydrogen from one place to another inside a cell or from cell to cell for use in...
3 KB (301 words) - 22:40, 13 December 2023
A hydrogen vehicle is a vehicle that uses hydrogen to move. Hydrogen vehicles include some road vehicles, rail vehicles, space rockets, forklifts, ships...
100 KB (9,249 words) - 16:23, 26 August 2024
PH (redirect from Power of hydrogen)
as acidity or basicity, historically denotes "potential of hydrogen" (or "power of hydrogen"). It is a logarithmic scale used to specify the acidity or...
52 KB (6,462 words) - 06:34, 26 August 2024
Hydrogen cyanide (formerly known as prussic acid) is a chemical compound with the formula HCN and structural formula H−C≡N. It is a highly toxic and flammable...
46 KB (4,607 words) - 21:22, 27 August 2024
Hydrogen iodide (HI) is a diatomic molecule and hydrogen halide. Aqueous solutions of HI are known as hydroiodic acid or hydriodic acid, a strong acid...
13 KB (1,372 words) - 22:19, 15 May 2024
A hydrogen tanker or liquid hydrogen tanker is a tank ship designed for transporting liquefied hydrogen. The World Energy Network research program of...
5 KB (431 words) - 09:04, 14 August 2024
A hydrogen atom is an atom of the chemical element hydrogen. The electrically neutral hydrogen atom contains a nucleus of a single positively charged proton...
39 KB (6,015 words) - 14:12, 30 August 2024
Nam Energy Association have included green hydrogenation support. Australian clean energy company Pure Hydrogen Corporation Limited announced on July 22...
80 KB (8,568 words) - 08:00, 5 September 2024
Hydrogen polyoxides (also known as oxidanes, oxohydrogens, or oxyhydrogens) are chemical compounds that consist only of hydrogen and oxygen atoms, are...
6 KB (590 words) - 09:15, 11 June 2024
Liquid hydrogen (H2(l)) is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H2 form. To exist as a liquid, H2 must...
14 KB (1,358 words) - 13:23, 27 June 2024
for hydrogen. In principle, every unsaturated compound (organic molecules with C-C double or triple bonds) can take up hydrogen during hydrogenation. The...
14 KB (1,659 words) - 20:13, 22 July 2024