The Element Molybdenum

Swedish chemist Carl Well Helm Cher found a mineral called Molybdenite Knight (MoS 2) in 1778. It was confused with lead compounds. In 1781, Peter Jacob Hjelm isolated molybdenum. Today, most molybdenum is obtained from molybdenite, molybdenite (PbMoO 4) and fly ash (CaMoO 4). These ores are usually shown with tin and tungsten ore. Molybdenum can also be obtained as a by-product of the mining and processing of tungsten and copper.

Molybdenum has a high melting point and is used to manufacture electrodes for electrically heated glass furnaces. Some wires are also made of molybdenum. Metals are used to make several missiles and aircraft parts and are used in the nuclear industry. Molybdenum is also used as a catalyst for petroleum refining

Molybdenum is mainly used as steel alloying agent. When added to the steel at a concentration of 0.25% to 8%, molybdenum forms ultra high strength steels capable of withstanding pressures up to 300,000 pounds per square inch. Molybdenum also increases the strength of high temperature steel. When alloying with nickel, molybdenum forms heat resistant and corrosion resistant materials used in the chemical industry

Molybdenum disulfide (MoS 2) is one of molybdenum compounds and is used as a high temperature lubricant. Another molybdenum compound, molybdenum trioxide (MoO 3), is used to attach enamel to metal. Other molybdenum compounds include molybdic acid (H 2 MoO 4), molybdenum hexafluoride (MoF 6) and molybdenum phosphide (MoP 2).

As a transition metal, molybdenum easily forms a compound with other elements. Molybdenum occupies two parts per million (ppm) of the Earth's crust, but it is not found in nature. The main molybdenum ore is molybdenite (molybdenum disulfide), but it is also contained in urufenite (lead molybdate) and powder (calcium molybdate). Soft black mineral molybdenum (molybdenum sulphide) is often not mistaken for graphite or lead ore until it is analyzed by German chemist Carl Scheele in 1778 and it is not a completely new element. . But Chemicool said Scheele took several years to actually identify the elements, as there is no suitable furnace to reduce white solids to metal. In fact, Scheele was later called "Scheele of unfortunate". Because he made many chemical discoveries, including oxygen, he constantly gave others credit.

By 1778, the Swedish chemist Karl Wilhelm Cher stressed that molybdenum oxide is not (really) galena or graphite. Instead, Scheele correctly suggested that molybdenum is a unique new element of ores that can be separated from that called molybdenum minerals. Peter Jacob Hjelm separated molybdenum from carbon and linseed oil in 1781. In the next century, molybdenum has no industrial use. It is relatively rare, pure metal is difficult to extract, and the required metallurgical techniques are not mature yet. Early molybdenum steel alloys showed great promise for increasing hardness, but the efforts to manufacture the alloy on a large scale were contradictory, hindering friability and recrystallization.