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Topic: Platinum


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In the News (Tue 23 Apr 19)

  
  Platinum today: Where can I find a history of platinum?
One of the principal new uses of platinum was in the petroleum industry, where platinum catalysts were introduced to increase the octane rating of gasoline and to manufacture important primary feedstocks for the growing plastics industry.
During the 1960s, demand for platinum in jewellery experienced a spectacular rise in Japan, appealing to the Japanese public by virtue of its purity, colour, prestige and value.
By the 1990s, platinum was growing in use as a medical treatment against certain forms of cancer and the same decade saw a multiplication in the uses of machined platinum alloy components to treat cardiac and other disease.
www.platinum.matthey.com /info/1051607859.html   (1224 words)

  
 PMR: Welcome to Platinum Metals Review
Part I, published in the July 2007 issue of Platinum Metals Review, described the initial research and development for the process, and its commercialisation.
The wide variety of topics and applications discussed demonstrates that use of the platinum group metals (pgms) continues to provide new and useful methodologies to prepare fine chemicals on an industrial scale.
Platinum Metals Review is published here by Johnson Matthey PLC, refiner and fabricator of the precious metals and sole marketing agent for the six platinum group metals produced by Anglo Platinum Limited, South Africa.
www.platinummetalsreview.com   (1554 words)

  
 Male Escorts - Female Escorts - London Escorts - Uk Escort - Male Escorts - Independent Escorts - Platinum Select - ...
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We have been operating since 1998 (2000 on the Web) and are considered the world leading Escort Agency operating globally with over 6,000 male and female Escorts and over 12,000 members (see our live statistics on the right of the page).
Independent male escort and females escorts are always welcome to join Platinum Select and we have escorts from as little as £50 per hour up to £500 per hour.
www.platinumselect.com   (770 words)

  
  BBC NEWS | Business | Platinum prices hit record high
The cost of platinum has hit a record high on rumours that a market is to be opened up allowing traders to speculate on the price of the precious metal.
Platinum is a key component for catalytic converters in car engines.
Russia and South Africa are the two main producers of platinum and its use in catalytic conversions is growing as pollution rules are toughened.
news.bbc.co.uk /1/hi/business/6169934.stm   (248 words)

  
  Platinum - MSN Encarta
Platinum is the most important of the group of elements called the platinum metals, the other members of which are ruthenium, rhodium, palladium, osmium, and iridium.
Platinum is also used for contact points in electrical apparatus and in instruments used for measuring high temperatures.
Finely divided platinum in the form of platinum sponge or platinum fl is used extensively as a catalyst in the chemical industry.
encarta.msn.com /encyclopedia_761570462/Platinum.html   (429 words)

  
 Platinum
Platinum is a silvery metallic chemical element, a member of the six transition elements in Group VIII of the periodic table known collectively as the platinum metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum).
The recovery of the individual platinum metals from the natural alloys is a complex process that depends upon the distinct properties of the individual elements, even though all members of the group are generally similar in their chemical behavior and are quite unreactive.
Platinum is an attractive silvery white metal with a melting point of 1,774 deg C, a boiling point of 3,827 deg C and a density of 21.45 g/cu cm at room temperature.
socrates.berkeley.edu /~eps2/wisc/pt.html   (815 words)

  
 Platinum (Pt) - Chemical properties, Health and Environmental effects
Platinum is a lustrous silvery-white, malleable, ductile metal and a member of group 10 of the periodic table of the elements.
Platinum is unaffected by air and water, but will dissolve in hot aqua regia, in hot concentrated phosphoric and sulphuric acids, and in molten alkali.
The health effects of platinum are strongly dependent upon the kind of bonds that are shaped and the exposure level and immunity of the person that is exposed.
www.lenntech.com /Periodic-chart-elements/Pt-en.htm   (711 words)

  
 Breast Implants - FDA Backgrounder on Platinum in Silicone Breast Implants
Platinum is a metal used as a catalyst in the manufacture of the shell and gel components of silicone breast implants.
The authors also reported that the platinum found in seven blood samples, one urine sample, one sample of brain tissue, and the gel from the explanted breast implants was present in various charged forms (referred to as oxidation states).
Based on the existing literature, FDA believes that the platinum contained in breast implants is in the zero oxidation state, which would pose the lowest risk, and thus that the small amounts of platinum that leak through the shell do not represent a significant risk to women with silicone breast implants.
www.fda.gov /cdrh/breastimplants/platinum.html   (2203 words)

  
 Platinum Coins, Platinum Bullion, Platinum Eagles
Demand for platinum in high technology applications is soaring due to its unique properties: It is virtually impervious to corrosion, has a melting point in alloy of 3,215 degrees Fahrenheit, is a powerful catalyzing agent and is highly conductive.
Platinum catalysts are a core component for fuel cells, a power generation technology that combines oxygen and hydrogen to form water and electricity.
Platinum is prized the world over for its understated elegance and its tensile strength, making it the most secure precious metal for setting precious stones.
www.austincoins.com /platinum_facts.htm   (947 words)

  
 Platinum
Platinum is very rare; 10 tons of ore and a five month process are needed to make up just one ounce of platinum.
Upon its introduction to Europe, platinum was noted as a substance that could not "melt by fire or by any of the Spanish arts." It was known to be even heavier than gold and to be virtually impossible to corrode with gases or chemicals.
Demand for platinum in high technology applications is soaring due to its unique properties: It is virtually uncorrodable, has a melting point in alloy of 3,215 degrees Fahrenheit, is a powerful catalyzing agent and is highly conductive.
www.penoir.com /platinum.htm   (1766 words)

  
 C&EN: IT'S ELEMENTAL: THE PERIODIC TABLE - PLATINUM
The Incas created adornments from platinum but when they were invaded by the Spanish conquistadors, platinum was declared the "solver of less value," and the conquistadors dumped great amounts of platinum into the sea because they were fearful it would become a cheap imitation of silver.
Finally, during the 18th century, platinum's value as a metal suited for jewelry took hold, and in the 19th century, it became the standard mounting for the newly discovered gemstone, the diamond.
Platinum is widely used in catalysts and has found great use in automobile catalytic converters.
pubs.acs.org /cen/80th/platinum.html   (814 words)

  
 Platinum
Platinum is the most abundant of a family of six heavy metals, all very similar to one another, and they are always found together.
Platinum sponge is said to be made by heating ammonium chloroplatinate, and platinum fl by reducing chloroplatinic acid solution with zinc.
Platinum is not mentioned anywhere, except to say that palladium was used when the price of platinum rose; this would be of no importance if the prints contained no platinum.
www.du.edu /~jcalvert/phys/platinum.htm   (2653 words)

  
 NATIVE PLATINUM (Pt)
Platinum's origin in the crust is from ultra-mafic igneous rocks and therefore platinum is associated with minerals common to these rocks such as chromite and olivine.
Over the ages, the platinum became weathered out of the igneous rocks and were tumbled down streams and rivers where the extremely heavy grains and nuggets of platinum collect behind rocks and bends in the rivers and streams.
Native platinum is the primary ore of platinum, but deposits containing the rare platinum arsenide, sperrylite of the Pyrite Group, have made a huge contribution to the world's limited supply.
mineral.galleries.com /minerals/elements/platinum/platinum.htm   (545 words)

  
 An MBendi Profile: World: Mining - Platinum Group Element Mining - Commodity Properties and Uses
Platinum Group Elements (PGE’s) have numerous applications either in their pure form or as a variety of alloys combining different PGE’s or with other metals.
Platinum Mining is a capital and labour intensive industry, taking up to six months, and requiring 7 to 12 tonnes of ore to produce one troy ounce (31.135 grammes) of platinum.
Palladium and platinum prices were at near record highs in the first quarter of 2002, but began to diverge in the fourth quarter when palladium prices sank to near record lows.
www.mbendi.co.za /indy/ming/plat/p0005.htm   (778 words)

  
 Platinum Education
Platinum's cool white sheen beautifully accentuates the sparkle and brilliance of a diamond, and its great strength holds the gem firmly.
A scratch in platinum may leave a mark on the metal, but this metal is so strong that it will not readily chip or splinter.
Soaking platinum in a mild solution of soap and warm water and gently scrubbing it with a soft-bristled brush is usually all that is required to maintain the metal's luster.
www.bluenile.com /platinum.asp?track=56   (331 words)

  
 Mondera - Learn - Platinum Knowledge
Platinum's initial uses were probably limited by its hardness and its very high melting point.
During the latter part of the 19th century, and the first half of the 20th, platinum was the premier metal for all-important jewelry.
Platinum in jewelry is actually an alloyed group of six heavy metals, including platinum, palladium, rhodium, ruthenium, iridium and osmium.
www.mondera.com /learn/metalsplatinum.asp   (441 words)

  
 It's Elemental - The Element Platinum
Platinum can occur free in nature and is sometimes found in deposits of gold-bearing sands, primarily those found in the Ural mountains, Columbia and the western United States.
Platinum is used to coat missile nose cones, jet engine fuel nozzles and other devices that must operate reliably for long periods of time at high temperatures.
Platinum is also used in a device called a catalytic converter, a device found in the exhaust systems of most cars.
education.jlab.org /itselemental/ele078.html   (306 words)

  
 American Elements: Platinum Supplier & Technical Information
Platinum is a member of the platinum group of metals.
Platinum is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder.
Platinum is available in soluble forms including chlorides, nitrates and acetates.
www.americanelements.com /pt.htm   (493 words)

  
 USGS Minerals Information: Platinum-Group Metals
Platinum, platinum alloys, and iridium are used as crucible materials for the growth of single crystals, especially oxides.
The chemical industry uses a significant amount of either platinum or a platinum-rhodium alloy catalyst in the form of gauze to catalyze the partial oxidation of ammonia to yield nitric oxide, which is the raw material for fertilizers, explosives, and nitric acid.
Platinum supported catalysts are used in the refining of crude oil, reforming, and other processes used in the production of high-octane gasoline and aromatic compounds for the petrochemical industry.
minerals.usgs.gov /minerals/pubs/commodity/platinum   (380 words)

  
 Top: Xbox 360 Gets Cheap(er) Platinum Hits Games - Kotaku
Microsoft just announced that the cheap, older game repurposing that has come to be known as "Greatest Hits" or "Platinum Hits" depending on which console you are is coming to the Xbox 360.
Platinum Hits titles for the first Xbox console included "Halo: Combat Evolved" (Bungie) and "Crimson Skies: High Road to Revenge" (Microsoft Game Studios), some of the best-reviewed games on the console.
The second wave of Platinum Hits arrives in spring of 2007 after launching worldwide this holiday, with titles varying by region.
www.kotaku.com /gaming/top/xbox-360-gets-cheaper-platinum-hits-games-201974.php   (1167 words)

  
  Platinum - Wikipedia, the free encyclopedia
The catalytic properties of the six platinum family metals are outstanding (a mixture of hydrogen and oxygen explodes in the presence of platinum).
Platinum was discovered by astronomer Antonio de Ulloa and Don Jorge Juan y Santacilia (1713-1773), both appointed by King Philip V to join a geographical expedition in Peru that lasted from 1735 to 1745.
Platinum is often found free in areas of the Americas and alloyed with iridium as platiniridium.
en.wikipedia.org /wiki/Platinum   (1003 words)

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