News tagged with palladium
High-purity hydrogen generated from a single device
(PhysOrg.com) -- There are many ways to generate hydrogen, such as water electrolysis and steam reforming of gas, but the hydrogen produced by these methods tends to be combined with other byproduct and residual ...
Oct 07, 2011 |
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A greener path for the production of a vital chemical
(PhysOrg.com) -- Nanoparticles of gold and palladium (Au-Pd) could lead to a more efficient and environmentally friendly way of producing benzyl benzoate, a chemical compound used widely in the food, pharmaceutical ...
Nanotechnology / Nanomaterials
Jan 14, 2011 |
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The World's Smallest Spontaneous Atomic Valentine
(PhysOrg.com) -- Palladium atoms placed on a carbon base spontaneously formed into an 8 nanometer heart at the University of Birmingham’s Nanoscale Physics Research Laboratory this week. Just in time for ...
Feb 14, 2010 |
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Silver tells a volatile story of Earth's origin: Water was present during its birth
Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled beginning 4.568 billion years ago. The new ...
Space & Earth / Earth Sciences
May 13, 2010 |
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Metal-mining bacteria are green chemists
Microbes could soon be used to convert metallic wastes into high-value catalysts for generating clean energy, say scientists writing in the September issue of Microbiology.
Sep 02, 2010 |
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New highly stable fuel-cell catalyst gets strength from its nano core
(PhysOrg.com) -- Stop-and-go driving can wear on your nerves, but it really does a number on the precious platinum that drives reactions in automotive fuel cells. Before large fleets of fuel-cell-powered vehicles ...
Nov 10, 2010 |
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Tiny wires change behavior at nanoscale
Thin gold wires often used in high-end electronic applications are wonderfully flexible as well as conductive. But those qualities don't necessarily apply to the same wires at the nanoscale.
Nanotechnology / Nanomaterials
Aug 29, 2011 |
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Gold-palladium nanoparticles achieve greener, smarter production of hydrogen peroxide
Hydrogen peroxide is one of the world's most versatile and widely used chemicals. A powerful oxidizing agent, H2O2 is commonly used as a bleach, an antiseptic and a disinfectant.
Nanotechnology / Nanomaterials
Feb 19, 2009 |
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Dutch chemists make new chiral palladium metal
Researchers at the University of Amsterdam (UvA) have succeeded in making the first ever piece of chiral palladium metal. The findings, by a research team led by Gadi Rothenberg, professor of Heterogeneous Catalysis and Sustainable ...
Apr 23, 2009 |
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Japan nano-tech team creates palladium-like alloy: report
Japanese researchers have created an alloy with properties similar to palladium, a precious metal used in many high-tech goods, a news report said Thursday, dubbing the breakthrough "present-day alchemy".
Nanotechnology / Nanomaterials
Dec 30, 2010 |
4.8 / 5 (19) |
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Fast, easy way to make hydrogen nanosensors found by scientists
A team of Northern Illinois University scientists, with a major role played by NIU Ph.D. students, has discovered a new, convenient and inexpensive way to make high performance hydrogen sensors using palladium nanowires.
Jan 13, 2011 |
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Organic solvent system may improve catalyst recycling and create new nanomedicine uses
Noble metals such as platinum and palladium are becoming increasingly important because of growth in environmentally friendly applications such as fuel cells and pollution control catalysts. But the world ...
Nanotechnology / Nanomaterials
Oct 28, 2010 |
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Imaging Atoms and Revolutionizing Laptop Computers
(PhysOrg.com) -- Outlet vampires (n). Definition: People with laptop computers who stare hungrily at the walls of airports, train stations, and bus depots, searching for an electrical outlet to power their ...
Jun 08, 2010 |
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New visible light photocatalyst kills bacteria, even after light turned off
In the battle against bacteria, researchers at the University of Illinois have developed a powerful new weapon - an enhanced photocatalytic disinfection process that uses visible light to destroy harmful bacteria and viruses, ...
Jan 19, 2010 |
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Carbenes: New molecules have wide applications
Researchers at the University of California, Riverside have created in the laboratory a class of carbenes, highly reactive molecules, used to make catalysts - substances that facilitate chemical reactions. ...
Oct 22, 2009 |
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Palladium
Palladium (pronounced /pəˈleɪdiəm/) is a chemical element with the chemical symbol Pd and an atomic number of 46. Palladium is a rare and lustrous silvery-white metal that was discovered in 1803 by William Hyde Wollaston, who named it after the asteroid Pallas, which in turn, was named after the epithet of the Greek goddess Athena, acquired by her when she slew Pallas.
Palladium, along with platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). Platinum group metals share similar chemical properties, but palladium has the lowest melting point and is the least dense of these precious metals.
The unique properties of palladium and other platinum group metals account for their widespread use. One in four goods manufactured today either contain platinum group metals or had platinum group metals play a key role during their manufacturing process. Over half of the supply of palladium and its congener platinum goes into catalytic converters, which convert up to 90% of harmful gases from auto exhaust (hydrocarbons, carbon monoxide and nitrogen oxide) into less harmful substances (nitrogen, carbon dioxide and water vapor). Palladium is found in many electronics including computers, mobile phones, multi-layer ceramic capacitors, component plating, low voltage electrical contacts, and SED/OLED/LCD televisions. Palladium is also used in dentistry, medicine, hydrogen purification, chemical applications, and groundwater treatment. Palladium plays a key role in the technology used for fuel cells, which combines hydrogen and oxygen to produce electricity, heat and water.
Palladium bullion has ISO currency codes of XPD and 964. Palladium is one of only four metals to have such codes, the others being gold, silver and platinum.
Ore deposits of palladium and other platinum group metals are rare, and the most extensive deposits have been found in the norite belt of the Bushveld Igneous Complex in the Transvaal in South Africa, the Stillwater Complex in Montana, United States, the Sudbury District of Ontario, Canada, and the Norilsk Complex in Russia. In addition to mining, recycling is also a source of palladium, mostly from scrapped catalytic converters. The numerous applications and limited supply sources of palladium result in palladium drawing considerable investment interest.
For more information about Palladium, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
