Hydrogen sulfide, discovery

The mngsten ore called scheehte is named after Carl Wilhelm Scheele (1742—1786), who smdied and experimented with tungsten minerals, but as with many of his other near discoveries, such as oxygen, fluorine, hydrogen sulfide, hydrogen cyanide, and manganese, he was not given credit. 

Because of the presence of hydrogen sulfide in Jay field crude oil, complex facilities, including oil stabilization, gas sweetening, and sulfur-recovery units, were required to produce salable oil and gas. To initiate field production and to provide extended well tests, a small 2.000-B/D facility was installed initially. As development drilling proceeded, 6.S00- and 12,000-B/D modules were built when and where needed. By using the modular-facility design concept, the field producing capacity was more than 00,000 B/D within 2V4 years of discovery. 

Small concentrations of HI reduce concentrated sulfuric acid to sulfiirous acid high concentrations of HI reduce it to hydrogen sulfide (56). Manufacture and Processing. The industry related to iodine production began a few years after the discovery of the element by Courtois in 1811. The production processes are based on the raw materials containing iodine seaweeds, mineral deposits, and oil-well or natural gas brines. 

The search for a novel, low cost replacement for elemental hydrogen resulted in the discovery of a mixed gas consisting of hydrogen sulfide and carbon monoxide. This gas, when used with Fe on AI2O3, reduces dinitroarenes to diamino aromatic compounds in high yield (equation 22). 

Hydrogen sulfide, H2S, is a colourless, poisonous, corrosive, flammable and potentially explosive gas familiar to most people as rotten egg gas Its discovery is credited to Carl Wilhelm Scheele in 1777. The gas is commercially available and applications range from organosulfur and metal-sulfur chemistry to the production of heavy water (Girdler-Spevack process). 

Membranes for natural gas treatment have been employed since the 1980s, with the earlier critical discoveries that cellulose acetate membranes for reverse osmosis (RO) could be transformed into gas separation membranes [3,4]. Since membranes for treatment of water have a high affinity for water transport, a molecule with unique polar properties, there is also an affinity for other polar molecules such as carbon dioxide and hydrogen sulfide. Water, CO2 and HjS are impurities in natural gas (methane) termed acid gases that can promote corrosion of steel. Since pipelines are used in the transport... 

Closely related to the Iwao indole synthesis (Chapter 33) is the discovery by Hewson and colleagues, who found that ortfto-sulfonamide ketene dithioacetal 5-oxides 1 readily cyclize to the corresponding 2-thiomethylindoles 2 upon treatment with hydrochloric acid in the presence of hydrogen sulfide (Scheme 1) [1]. The hydrogen sulfide prevents the... 

In a series of communications between 1959 and 1962, Ugi described the four-component condensation of an oxo-containing species, amine, isocyanide, and carboxylic acid to give a-acylamino carboxamide products. This discovery introduced the multicomponent reaction to the field of peptide chemistry and, thus, dramatically increased its applicability. Ugi showed that a broad range of nucleophilic components — including hydrogen sulfide, hydrogen selenide, hydrazoic acids, cyanates, thiocyanates, carbonic acid monoesters, salts of secondary amines, and water - were viable partaers in the reaction. In addition, procedures made use of either ketones or aldehydes as the oxo-containing component. Primary or secondary amines, hydroxylamines, ammonia, hydrazides and hydrazines were found to successfully participate as the amine component. 

When the discovery became known, a factory owner, K. S. L. Hermann in Schone-beck, and a Medidnal Counsellor, Dr J. C. H. Roloff in Magdeburg, contacted Professor Stromeyer. Dr Roloff had made a pharmacy inspection some years earlier and confiscated zinc oxide, as it seemed to contain arsenic. From an add solution of the oxide, hydrogen sulfide in fact predpitated a yellow sulfide, identified as arsenic sulfide. The zinc oxide had been manufactured at Hermann s fadory from a Silesian calamine ore. The two gentlemen now sent to Professor Stromeyer both zinc oxide, prepared from the ore from Silesia, and the yellow sulfide with supposed content of arsenic. Stromeyer could rapidly state that the yellow substance was not the sulfide of arsenic but a sulfide of the metal he himself had discovered. 

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