/kloc-at the beginning of the 0 th century, chemists began to use platinum powder to catalyze the ignition reaction of hydrogen. At present, platinum is widely used in catalytic converters of automobiles, so that unburned hydrocarbons with low concentration in exhaust gas are completely burned, and carbon dioxide and water vapor are produced.
In petroleum industry, platinum can be used to catalyze several different reactions, especially the catalytic reforming of naphtha to produce high octane gasoline. Platinum dioxide (or Adams catalyst) is a catalyst for hydrogenation, especially for the production of vegetable oil. Platinum metal can catalyze the decomposition of hydrogen peroxide into water and oxygen.
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Platinum is a precious metal trading commodity. The ISO currency code of platinum ingot is "XPT". Platinum coins, platinum bars and platinum ingots can be traded or collected. Because platinum is not easy to corrode and has a shiny appearance, it is also used as jewelry, usually 90% to 95% alloy. Publications on jewelry trading generally advise jewelers to scrape some scratches on the surface of platinum.
In the watchmaking industry, many companies will use platinum to make limited edition watches. Platinum will neither lose its luster nor be scratched (compared with gold), so it is very suitable for clocks and watches.
Like other industrial commodities, the price of platinum fluctuates more than that of gold. In 2008, the price of platinum dropped from $2,252 to $774 per troy ounce, and its market value shrank by nearly two-thirds. Compared with the same period, the price of gold dropped from about $0/000 per ounce to about $700, and the market value only dropped by one third.
In the sustained and steady growth economy, the price of platinum is often twice that of gold; In unstable times, due to the reduction of industrial demand, platinum prices generally fall below the gold price level. When the economy is depressed, the price of gold is more stable because its demand is not driven by industrial use. /kloc-in the 0/8th century, Louis XV of France announced that platinum was the only metal worthy of the king in view of its rarity.
Baidu Encyclopedia-Platinum