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Rhodium - History | | Rhodium - History: Encyclopedia II - Rhodium - History | | Rhodium (Greek rhodon meaning "rose") was discovered in 1803 by William Hyde Wollaston soon after his discovery of palladium. Wollaston made this discovery in England using crude platinum ore that he presumably obtained from South America.
His procedure involved dissolving the ore in aqua regia, neutralizing the acid with sodium hydroxide (NaOH). He then precipitated the platinum metal by adding ammonium chloride, NH4Cl, as ammonium chloroplatinate. The element palladium was removed as palladium cyanide after treatin ...
See also:Rhodium, Rhodium - Notable characteristics, Rhodium - Applications, Rhodium - History, Rhodium - Occurrence, Rhodium - Isotopes, Rhodium - Precautions | | | Rhodium, Rhodium - Applications, Rhodium - History, Rhodium - Isotopes, Rhodium - Notable characteristics, Rhodium - Occurrence, Rhodium - Precautions | | |
| | | Rhodium: Encyclopedia II - Rhodium - History
Rhodium - History
Rhodium (Greek rhodon meaning "rose") was discovered in 1803 by William Hyde Wollaston soon after his discovery of palladium. Wollaston made this discovery in England using crude platinum ore that he presumably obtained from South America.
His procedure involved dissolving the ore in aqua regia, neutralizing the acid with sodium hydroxide (NaOH). He then precipitated the platinum metal by adding ammonium chloride, NH4Cl, as ammonium chloroplatinate. The element palladium was removed as palladium cyanide after treating the solution with mercuric cyanide. The material that remained was a red rhodium(III) chloride: rhodium metal was isolated via reduction with hydrogen gas.
Other related archives1803, BINAP, Cl, England, Greek, H, Monsanto process, N, Na, O, South America, Sudbury, Ontario, Ural Mountains, William Hyde Wollaston, acetic acid, acids, alloys, ammonium chloride, aqua regia, atomic number, atomic weights, beta emission, carcinogenic, catalyst, catalytic converters, chemical element, chiral synthesis, copper, corrosion, decay mode, decay product, discovered, electrodes, electron capture, electroplating, gold, half-life, hydrogen, isotope, jewelry, melting point, menthol, mercuric cyanide, meta states, minerals, palladium, periodic table, platinum, platinum group, radioisotopes, rhodium(III) chloride, ruthenium, silver, sodium hydroxide, spark plugs, tons, toxic, transition metal, u
 Adapted from the Wikipedia article "History", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki |
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