See also: Raney nickel § Applications in organic synthesis
Desulfurization or desulphurisation is a chemical process for the removal of sulfur from a material. This involves either the removal of sulfur from a molecule (e.g. A=S → A:) or the removal of sulfur compounds from a mixture such as oil refinery streams.[1]
Example of desulfurization of thioacetals using Raney nickel
These processes are of great industrial and environmental importance as they provide the bulk of sulfur used in industry (Claus process and Contact process), sulfur-free compounds that could otherwise not be used in a great number of catalytic processes, and also reduce the release of harmful sulfur compounds into the environment, particularly sulfur dioxide (SO2) which leads to acid rain.
Processes used for desulfurization include hydrodesulfurization, the SNOX process and the wet sulfuric acid process (WSA process).
^Babich, I (April 2003). "Science and technology of novel processes for deep desulfurization of oil refinery streams: a review". Fuel. 82 (6): 607–631. doi:10.1016/S0016-2361(02)00324-1.
process Flue-gas desulfurization Biodesulfurization Babich, I (April 2003). "Science and technology of novel processes for deep desulfurization of oil refinery...
petroleum desulfurization techniques can be classified as follows: Solvent extraction Chemical treatment Thermal desulfurizationDesulfurization in an oxidizing...
Frasch process Electric power stations burning coal with flue gas desulfurization produce large quantities of gypsum as a byproduct from the scrubbers...
distillation tower. The bottoms product from the stripper is the final desulfurized liquid product from hydrodesulfurization unit. The overhead sour gas...
in wood and plastic products, paints and metal castings. Flue-gas desulfurization (FGD) materials are produced by chemical "scrubber" emission control...
subjected to three steps of refining; decarburization, reduction, and desulfurization. The AOD process was invented in 1954 by the Lindé Division of The...
precipitators or fabric filters remove particulate matter and flue-gas desulfurization captures the sulfur dioxide produced by burning fossil fuels, particularly...
molecular sieves are used to dry natural gas, along with performing desulfurization and decarbonation of the gas. They can also be used to separate mixtures...
4-butynediol to 1,4-butanediol. Raney nickel is used in organic synthesis for desulfurization. For example, thioacetals will be reduced to hydrocarbons in the last...
many roads as well as in asphalt concrete. As a reagent in flue-gas desulfurization, where it reacts with sulfur dioxide for air pollution control. In...
2-vinylthiophene. Desulfurization of thiophene with Raney nickel affords butane. When coupled with the easy 2,5-difunctionalization of thiophene, desulfurization provides...
leaner feeds. Hydrogen sulfide produced, for example, in the hydro-desulfurization of refinery naphthas and other petroleum oils, is converted to sulfur...
Before flue-gas desulfurization was installed, the air-polluting emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide...
wide range of industries. Among the leading products are fuel gas desulfurization and denitrification systems, and ash handling systems. The company...
safer alternative to Raney Nickel for removal of cyclic thioacetals. Desulfurization catalyzed by Ni2B proved to occur with retention of configuration by...
products every year. These include fly ash, bottom ash, and flue-gas desulfurization sludge, that contain mercury, uranium, thorium, arsenic, and other...
Before flue-gas desulfurization was installed, the air-polluting emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide...
reformer unit, where it would be converted to benzene. Therefore, only (desulfurized) heavy virgin naphtha (HVN) is fed to the reformer unit Gasoline can...
Calcium magnesium acetate (CMA) is a deicer and can be used as an alternative to road salt. It is approximately as corrosive as normal tap water, and in...
air pollution by the developed nations, typically through flue-gas desulfurization installations at thermal power plants, such as wet scrubbers or fluidized...
condenses with a carbonyl, followed by cyclization and tautomerization. Desulfurization delivers the pyrimidine. The pharmaceuticals thiobarbituric acid and...
thiosulfate. The Wellman–Lord process utilizes sodium sulfite for flue gas desulfurization. Sodium sulfite is primarily used as a mild reducing agent. The heptahydrate...
A metallocarbohedryne (met-car) is any one of a family of chemical compounds with the generic molecular formula M 8C 12, where M is a transition metal...
waste products annually, including fly ash, bottom ash, and flue-gas desulfurization sludge, that contain mercury, uranium, thorium, arsenic, and other...
sulfur is absorbed by powdered limestone in a process called flue-gas desulfurization (FGD), which produces several new substances. One is called "FGD gypsum"...
hydrotreater unit uses hydrogen to desulfurize naphtha from atmospheric distillation. Naphtha must be desulfurized before sending it to a catalytic reformer...
polycyclic aromatic hydrocarbons in ambient air). Before flue-gas desulfurization was installed, the emissions from this power plant in New Mexico contained...
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