Platinum Element Symbol Region wählen
Platin ist ein chemisches Element mit dem Elementsymbol Pt und der Ordnungszahl Es besitzt eine hohe Dichte und ist ein kostbares, schmiedbares, dehnbares, grau-weißes Übergangsmetall. Es besitzt eine bemerkenswerte Korrosionsbeständigkeit und. Suchen Sie nach Platinum Symbol Element Number 78 Periodic-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und. Suchen Sie nach Platinum Chemical Element Symbol Periodic Table-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und. Platin (Deutschland: [ˈplaːtiːn], Österreich: [ plaˈtiːn]) ist ein chemisches Element mit dem Elementsymbol Pt und der Ordnungszahl B. Lonmin, Anglo American Platinum oder Impala Platinum. Platinquellen sind auch die. Platinum. chemical element with symbol Pt and atomic number 78 Um eine größere Anzahl von Bildern zu Platinum zu sehen, gehe zu.
Many translated example sentences containing "platinum element" transition metal of the platinum group - a chemical element with symbol Ir and atomic [ ]. Suchen Sie nach Platinum Chemical Element Symbol Periodic Table-Stockbildern in HD und Millionen weiteren lizenzfreien Stockfotos, Illustrationen und. Platinum. chemical element with symbol Pt and atomic number 78 Um eine größere Anzahl von Bildern zu Platinum zu sehen, gehe zu.
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|Platinum Element Symbol||Moreover, its flexibility is an important element for jewelry designers. Schon ein ungefähr prozentiger Platinanteil führt zu einer hellgrauen Farbe. The reason why platinum is today the most valuable of precious metals is because it is required Casino Bonus Mobile many industrial applications. Namensräume Artikel Diskussion. However, this is just one of the many properties that gold possesses, which when considered in combination with each other have led to a number of exciting and often Beste Online Casinos Deutschland industrial applications. The periodic table is a chart that shows how chemical elements are related to each other.|
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|Platinum Element Symbol||In the fuel sector it is important as a petrol additive Lotto Zahlenkombination enhance combustion and reduce engine emissions. Eine Jedlicka Beschreibung der Eigenschaften findet sich in einem veröffentlichten Bericht Pokerstars Com Login Antonio de Ulloa. Total Materia ist das Werkzeug, das in Zukunft für diesen Zweck eingesetzt wird. Palladium was also used as a substitute material for jewelry manufacture during a certain period of history when platinum Pizza Joker Neuss not freely available. Überschriften Abstracts. Increased concerns about environment protection has led to tougher emission standards being imposed by governments worldwide, further escalating the demand for the metal.|
Platinum Element Symbol VideoHow to test for precious metal ( platinum , palladium ) For example, very small amounts of indium are sometimes added to gold and platinum alloys to make them much harder. Scientists use a spectroscope in this process. Durch das von Hans Merensky Novoline Mauer sogenannte Merensky Reef wurde der kommerzielle Abbau von Platin wirtschaftlich. Radioactive isotopes are produced when very small particles are fired at atoms. So ist Platin ein Play Doom Online Material zur Herstellung von Laborgeräten, da es keine Flammenfärbung erzeugt. Sie erwog sogar, sämtliches bis dahin erhaltenes Platin im Meer zu Slot Casino Oyunu, um Platinschmuggel und Fälscherei zuvorzukommen und davor abzuschrecken. Besonders fragliche Werte sind mit? Weitere Bedeutungen sind unter Platin Begriffsklärung aufgeführt. Allerdings werden Platinkatalysatoren schnell durch Alterung und Verunreinigungen inaktiv vergiftet und müssen regeneriert werden.
Platinum Element Symbol DateiversionenNachrichten Ostseewelle Silver was one of the first metals utilized by man. In the fuel sector it is important as a petrol additive to enhance combustion and reduce Casino Macau Kitzingen emissions. Oktober Lanthanum is a chemical element with the symbol La and atomic number 57 belonging to group 3 of the periodic table and is one of the lanthanoids. Seaborgium is a synthetic element whose most Online Pool isotope Sg has a half-life of 2. Dieses Werk Casino Poker Chips Value von dir verbreitet werden — vervielfältigt, verbreitet und öffentlich zugänglich gemacht werden neu zusammengestellt werden — abgewandelt und bearbeitet werden Zu den folgenden Bedingungen: Namensnennung — Du musst angemessene Urheber- und Rechteangaben machen, einen Link zur Lizenz beifügen und angeben, ob Änderungen vorgenommen wurden. Heute wird für diesen Zweck wegen der Asbestproblematik Platin-Quarzwolle eingesetzt. The metal was used by pre-Columbian Indians. Cisplatin is a remarkable tale of serendipity in science research and a wonderful example of how major breakthroughs cannot be commanded. Star Handy there were a competition for the chemical element mostly likely to generate schoolboy howlers, the winner would be germanium. Archived PDF from the original on 8 July U Uranium. Retrieved 24 December S" PDF. Relative supply risk 7. As a result, platinum is often found chemically uncombined as native platinum. July
Category: Alchemical Symbols. Platinum is part of the Mundane Elements group. Edit this symbol. Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century.
Rate this symbol: 3. The alchemical symbol for platinum was made by joining the symbols of silver and gold. More symbols in Mundane Elements :. More symbols in Alchemical Symbols : Alchemical symbols, originally devised as part of alchemy, were used to denote some elements and some compounds until the 18th century.
Have a discussion about Platinum with the community:. Powered by CITE. Platinum IV oxide , PtO 2 , also known as ' Adams' catalyst ', is a black powder that is soluble in potassium hydroxide KOH solutions and concentrated acids.
Unlike palladium acetate , platinum II acetate is not commercially available. Where a base is desired, the halides have been used in conjunction with sodium acetate.
Zeise's salt , containing an ethylene ligand, was one of the first organometallic compounds discovered.
Dichloro cycloocta-1,5-diene platinum II is a commercially available olefin complex, which contains easily displaceable cod ligands "cod" being an abbreviation of 1,5-cyclooctadiene.
The cod complex and the halides are convenient starting points to platinum chemistry. Cisplatin , or cis -diamminedichloroplatinum II is the first of a series of square planar platinum II -containing chemotherapy drugs.
These compounds are capable of crosslinking DNA , and kill cells by similar pathways to alkylating chemotherapeutic agents.
Archaeologists have discovered traces of platinum in the gold used in ancient Egyptian burials as early as BC.
For example, a small box from burial of Shepenupet II was found to be decorated with gold-platinum hieroglyphics. It is quite possible they did not recognize there was platinum in their gold.
The metal was used by pre-Columbian Americans near modern-day Esmeraldas, Ecuador to produce artifacts of a white gold-platinum alloy. Archeologists usually associate the tradition of platinum-working in South America with the La Tolita Culture circa BC - AD , but precise dates and location is difficult, as most platinum artifacts from the area were bought secondhand through the antiquities trade rather than obtained by direct archeological excavation.
The resulting gold-platinum alloy would then be soft enough to shape with tools. It was often simply thrown away, and there was an official decree forbidding the adulteration of gold with platinum impurities.
Ulloa and Juan found mines with the whitish metal nuggets and took them home to Spain. Antonio de Ulloa returned to Spain and established the first mineralogy lab in Spain and was the first to systematically study platinum, which was in His historical account of the expedition included a description of platinum as being neither separable nor calcinable.
Ulloa also anticipated the discovery of platinum mines. After publishing the report in , Ulloa did not continue to investigate the new metal.
In , he was sent to superintend mercury mining operations in Huancavelica. In , Charles Wood,  a British metallurgist , found various samples of Colombian platinum in Jamaica, which he sent to William Brownrigg for further investigation.
In , after studying the platinum sent to him by Wood, Brownrigg presented a detailed account of the metal to the Royal Society , stating that he had seen no mention of it in any previous accounts of known minerals.
In , Henrik Scheffer published a detailed scientific description of the metal, which he referred to as "white gold", including an account of how he succeeded in fusing platinum ore with the aid of arsenic.
Scheffer described platinum as being less pliable than gold, but with similar resistance to corrosion. Carl von Sickingen researched platinum extensively in He succeeded in making malleable platinum by alloying it with gold, dissolving the alloy in hot aqua regia , precipitating the platinum with ammonium chloride , igniting the ammonium chloroplatinate, and hammering the resulting finely divided platinum to make it cohere.
Franz Karl Achard made the first platinum crucible in He worked with the platinum by fusing it with arsenic, then later volatilizing the arsenic.
Because the other platinum-family members were not discovered yet platinum was the first in the list , Scheffer and Sickingen made the false assumption that due to its hardness—which is slightly more than for pure iron —platinum would be a relatively non-pliable material, even brittle at times, when in fact its ductility and malleability are close to that of gold.
Their assumptions could not be avoided because the platinum they experimented with was highly contaminated with minute amounts of platinum-family elements such as osmium and iridium , amongst others, which embrittled the platinum alloy.
Alloying this impure platinum residue called "plyoxen" with gold was the only solution at the time to obtain a pliable compound, but nowadays, very pure platinum is available and extremely long wires can be drawn from pure platinum, very easily, due to its crystalline structure, which is similar to that of many soft metals.
Chabaneau succeeded in removing various impurities from the ore, including gold, mercury, lead, copper, and iron. This led him to believe he was working with a single metal, but in truth the ore still contained the yet-undiscovered platinum-group metals.
This led to inconsistent results in his experiments. At times, the platinum seemed malleable, but when it was alloyed with iridium, it would be much more brittle.
Sometimes the metal was entirely incombustible, but when alloyed with osmium, it would volatilize. This started what is known as the "platinum age" in Spain.
Platinum, along with the rest of the platinum-group metals , is obtained commercially as a by-product from nickel and copper mining and processing.
During electrorefining of copper , noble metals such as silver, gold and the platinum-group metals as well as selenium and tellurium settle to the bottom of the cell as "anode mud", which forms the starting point for the extraction of the platinum-group metals.
If pure platinum is found in placer deposits or other ores, it is isolated from them by various methods of subtracting impurities.
Because platinum is significantly denser than many of its impurities, the lighter impurities can be removed by simply floating them away in a liquid.
Platinum is paramagnetic , whereas nickel and iron are both ferromagnetic. These two impurities are thus removed by running an electromagnet over the mixture.
Because platinum has a higher melting point than most other substances, many impurities can be burned or melted away without melting the platinum.
Finally, platinum is resistant to hydrochloric and sulfuric acids, whereas other substances are readily attacked by them.
Metal impurities can be removed by stirring the mixture in either of the two acids and recovering the remaining platinum. One suitable method for purification for the raw platinum, which contains platinum, gold, and the other platinum-group metals, is to process it with aqua regia , in which palladium, gold and platinum are dissolved, whereas osmium, iridium, ruthenium and rhodium stay unreacted.
The gold is precipitated by the addition of iron II chloride and after filtering off the gold, the platinum is precipitated as ammonium chloroplatinate by the addition of ammonium chloride.
Ammonium chloroplatinate can be converted to platinum by heating. The remaining The most common use of platinum is as a catalyst in chemical reactions, often as platinum black.
It has been employed as a catalyst since the early 19th century, when platinum powder was used to catalyze the ignition of hydrogen.
Its most important application is in automobiles as a catalytic converter , which allows the complete combustion of low concentrations of unburned hydrocarbons from the exhaust into carbon dioxide and water vapor.
Platinum is also used in the petroleum industry as a catalyst in a number of separate processes, but especially in catalytic reforming of straight-run naphthas into higher-octane gasoline that becomes rich in aromatic compounds.
PtO 2 , also known as Adams' catalyst , is used as a hydrogenation catalyst, specifically for vegetable oils. From to , the meter was defined as the length of a platinum-iridium alloy bar, known as the international prototype of the meter.
The previous bar was made of platinum in Until May , the kilogram was defined as the mass of the international prototype of the kilogram , a cylinder of the same platinum-iridium alloy made in The standard hydrogen electrode also uses a platinized platinum electrode due to its corrosion resistance, and other attributes.
Coins, bars, and ingots are traded or collected. It is used for this purpose for its prestige and inherent bullion value. Jewellery trade publications advise jewellers to present minute surface scratches which they term patina as a desirable feature in attempt to enhance value of platinum products.
In watchmaking , Vacheron Constantin , Patek Philippe , Rolex , Breitling , and other companies use platinum for producing their limited edition watch series.
Watchmakers appreciate the unique properties of platinum, as it neither tarnishes nor wears out the latter quality relative to gold.
During periods of sustained economic stability and growth, the price of platinum tends to be as much as twice the price of gold, whereas during periods of economic uncertainty,  the price of platinum tends to decrease due to reduced industrial demand, falling below the price of gold.
Gold prices are more stable in slow economic times, as gold is considered a safe haven. Although gold is also used in industrial applications, especially in electronics due to its use as a conductor, its demand is not so driven by industrial uses.
In the 18th century, platinum's rarity made King Louis XV of France declare it the only metal fit for a king. Platinum is used as an alloying agent for various metal products, including fine wires, noncorrosive laboratory containers, medical instruments, dental prostheses, electrical contacts, and thermocouples.
Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets. Platinum's rarity as a metal has caused advertisers to associate it with exclusivity and wealth.
Platinum is considered a precious metal, although its use is not as common as the use of gold or silver.
It was the first British crown to be made of this particular metal. According to the Centers for Disease Control and Prevention , short-term exposure to platinum salts may cause irritation of the eyes, nose, and throat, and long-term exposure may cause both respiratory and skin allergies.
As platinum is a catalyst in the manufacture of the silicone rubber and gel components of several types of medical implants breast implants, joint replacement prosthetics, artificial lumbar discs, vascular access ports, etc.
The Food and Drug Administration and other institutions have reviewed the issue and found no evidence to suggest toxicity in vivo.
From Wikipedia, the free encyclopedia. This article is about the chemical element. For other uses, see Platinum disambiguation.
Chemical element with atomic number See also: Platinum group. Main article: Isotopes of platinum. Main articles: Platinum as an investment and Platinum coin.
See also: Platinum album and Platinum color. Chelated platinum Iron—platinum nanoparticle List of countries by platinum production Mixed metal oxide electrode Platinum group Platinum in Africa Platinum nanoparticle Platinum print s commodities boom.
Pure and Applied Chemistry. Online Etymology Dictionary. Retrieved 20 August Dalton Transactions. Chemistry Foundations and Applications. Transition metal.
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