Platinum catalyst: "Star Material" in the Field of Industrial Catalysis
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Platinum catalyst is a general term for catalysts made with metal platinum as the main active component. It can be prepared in various forms, such as platinum metal mesh, platinum black, or platinum on carriers such as alumina, and co-catalyst components such as metal rhenium can also be added.
Platinum catalyst has many excellent properties. It has high catalytic activity and can significantly accelerate the rate of chemical reactions; it has strong selectivity and can accurately catalyze the target reaction and reduce the occurrence of side reactions; it is easy to make and used in small quantities. The catalytic performance can be further optimized by improving the manufacturing method and compounding with other metals or co-catalysts. In addition, it has a wide range of applications, can be repeatedly regenerated and activated, has a long life, and the metal platinum in the waste catalyst can be recycled and reused.
In the petroleum refining industry, platinum catalyst plays a key role. Taking platinum reforming catalyst as an example, during petroleum refining, it can separate the C6-C8 alkane fraction in petroleum and convert it into C6-C8 aromatics, such as benzene, toluene, and xylene through reforming, so as to achieve the goal of increasing the production of aromatics and improving the octane number of gasoline. In the process of ammonia oxidation, platinum-rhodium wire mesh catalyst is used. Ammonia and air react at 850-900℃ to generate nitric oxide and water. Nitric oxide is then oxidized to nitrogen dioxide, and water absorbs it to generate nitric acid.
In the field of silicone material production, platinum catalyst is a catalyst for liquid addition silicone rubber, silicone gel, addition compound, electronic potting glue, silicone ink and other products, and is also a catalyst for the synthesis of polyether silicone oil, amino silicone oil and other products. It has high catalytic efficiency, can inhibit side reactions in Si-Vi and Si-H reactions, avoid the formation of black substances, and overcome the problem of yellowing or blackening of products caused by other catalysts.
However, platinum catalysts also have "weak ribs". Many substances can poison them, such as organic matter containing elements such as nitrogen, phosphorus, and sulfur, and ionic compounds containing heavy metals such as tin, lead, mercury, bismuth, and arsenic. Despite this, with its significant advantages, platinum catalysts still occupy an important position in many industrial fields and have broad prospects for future development.