Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Chlorination of metals

The resistance of graphite to thermal shock, its stabiUty at high temperatures, and its resistance to corrosion permit its use as self-supporting vessels to contain reactions at elevated temperatures (800—1700°C), eg, self-supporting reaction vessels for the direct chlorination of metal and alkaline-earth oxides. The vulnerabiUty of cemented joints in these appHcations requires close tolerance ( 0.10 mm) machining, a feat easily accompHshed on graphite with conventional metal machining equipment. [Pg.515]

Similar considerations apply in certain reactions pertaining to the chlorination of metal oxides by metal chlorides. A typical reaction of this type is... [Pg.405]

Fig. 5.11. Vacuum reactor for chlorination of metals. A Reaction vessel (100 ml) B beryllia crucible containing titanium metal C silica cradle D crucible support also serving as evacuation duct, and finally sealed off at the top at E F capillary tube G duct for breaker H appendix containing liquid chlorine J fragile capillary tip K weighted glass breaker L glass-coated magnetic retainer. Fig. 5.11. Vacuum reactor for chlorination of metals. A Reaction vessel (100 ml) B beryllia crucible containing titanium metal C silica cradle D crucible support also serving as evacuation duct, and finally sealed off at the top at E F capillary tube G duct for breaker H appendix containing liquid chlorine J fragile capillary tip K weighted glass breaker L glass-coated magnetic retainer.
Specific procedures for the synthesis of M0CI4, MoCl, and M0CI2 are described in the sections that follow. Other methods of synthesis are also summarized in these sections. Procedures for the synthesis of M0CI5 have been given in Inorganic Syntheses 7, 167 (1963) and 9, 135 (1967). The industrial method is the direct chlorination of metal and is recommended in some laboratories.12-18 A convenient laboratory technique is the liquid-phase reaction system that uses refluxing thionyl chloride and molybdenum (VI) oxide.14... [Pg.167]

The red octahedral complex [IrCl3] results from direct chlorination of metallic iridium at 773 K 310 two forms of [IrCl3] are known, both water insoluble.392 The dark green hydrate, [IrCl3] 3H20, is obtained upon heating the oxychloride [Ir(Cl)2(0H)] 3H20 in HC1.343... [Pg.1149]

This compound is obtained by the direct chlorination of metallic tin. It is a liquid of 2.28 specific gravity, which boils at 114 C. (237 F.). It fumes in the air and hydrolyzes into stannic hydroxide ... [Pg.242]

Applications 45 10 t of thionyl chloride was consumed worldwide in 1992. It is utilized as a chlorination agent e.g. for the manufacture of organic intermediates, pesticides, insecticides, pharmaceuticals, dyes and pigments. It is also utilized for the dehydration of metal chloride hydrates, the chlorination of metal oxides, as a non-aqueous electrolyte and as a cathodic material in particular types of lithium batteries. [Pg.119]

The presence of carbon monoxide catalyses the direct chlorination of metallic iridium to iridium(lU) chloride under conditions of u.v. irradiation it has been postulated that this is due to the intermediate formation of phosgene [1950]. [Pg.388]

Chlorine treatment of carbides has become the most conunonly used method of producing CDC." This method has come a long way since its humble beginnings. In the early twentieth century, the main purpose of the chlorination of metal carbides was to produce silicon tetrachloride and the remnants were not given much thought. In 1918, Hutchins patented the process entailing the flow of dry chlorine gas over hot (>1000°C) silicon carbide" " ... [Pg.304]

There are a several examples of the conversion of a solid with a gaseous reactant into a gaseous product, such as the gasification and the burning of solid fuels, the conversion of some elements into volatile oxides, chlorides or oxychlorides, and the reductive chlorination of metal oxides to volatile chlorides, etc. [Pg.271]

Basu et allb5 separated mixtures of silicon tetrachloride, chlorine, phosgene, argon, nitrogen, carbon monoxide and carbon dioxide obtained in the reductive chlorination of metal ores on a three column, three detector gas chromatograph. The three gas chromatograms were equipped with the following columns in series Column 1 (20 foot x 0.25 inch) was filled with 15% of Kel-F 10 on Chromosorb T (30 - 60 mesh) and operated at 60 C. Column 2 (5 foot X 0.25 inch) was filled with silica gel (30- 60 mesh) and operated at 139 C. Column 3 (5 foot x 0.25 inch) was filled with molecular sieve 5A (30 - 60 mesh) and operated at 90°C. Thermal-conductivity... [Pg.159]

Examples of this type often occur in chemical and metallurgical processes the combustion and gasification of carbon and coal, the decomposition of solids into gases, the dissolution of solids in liquids, formation of metal carbonyls, fluorination and chlorination of metals, and some electrochemical processes. [Pg.66]


See other pages where Chlorination of metals is mentioned: [Pg.116]    [Pg.154]    [Pg.83]    [Pg.108]    [Pg.233]    [Pg.111]    [Pg.44]    [Pg.126]    [Pg.116]    [Pg.195]    [Pg.425]   
See also in sourсe #XX -- [ Pg.2 , Pg.2 , Pg.2 , Pg.4 , Pg.9 ]




SEARCH



© 2024 chempedia.info