Precious metal catalysts for petrochemical industry

There is a synergistic effect between precious metal catalysts (when two catalysts are combined, the effect is greater than the sum of their separate uses). Not only can they be used in combination to greatly increase the activity of catalytic reactions, but precious metals can also form combination catalysts with different content ratios and particle sizes compared to general metals, improving the selectivity of reactions and the lifespan of catalysts (the length of time they can be used), reducing the cost of catalysts (the amount of precious metals in nature is very small, so the price of precious metal catalysts is much higher than that of general metals).

Precious metal catalysts for petrochemical industryThis catalyst achieves excellent catalytic performance by using special loading techniques to load precious metals such as palladium, platinum, ruthenium, rhodium, etc. onto porous carrier materials such as activated carbon, alumina, silica, and titanium oxide. It has the characteristics of one-time loading, continuous long-term operation, no need for filtering devices, and easy use. It has been successfully applied in rosin and resin hydrogenation, pharmaceutical intermediates, spice intermediates, etc.

Precious metals are generally not prone to chemical reactions and have relatively stable properties (such as aluminum being easily oxidized and turned into alumina when exposed to air). They are not easily oxidized at room temperature and do not self ignite at high temperatures. Generally, acids and bases cannot corrode them. Therefore, after being prepared with catalysts, they are more stable and easy to store than some ordinary metal catalysts. Typically, precious metal catalysts can exhibit higher performance (catalytic activity and selectivity) at lower temperatures compared to conventional metal catalysts. Research has found that the interaction between nanoscale precious metal particles and carriers can alter their surface properties (geometric structure and surface electrons), accelerate reactions, and exhibit high catalytic activity.

Precious metal catalysts for petrochemical industryIt is a precious metal material that can change the rate of chemical reactions without itself participating in the reaction products. Almost all precious metals can be used as catalysts, but commonly used ones are platinum, palladium, rhodium, silver, ruthenium, etc. Among them, platinum and rhodium are particularly widely used. Their electronic orbitals are not fully filled, and the surface is prone to adsorb reactants with moderate strength, which is conducive to the formation of intermediate 'active compounds' and has high catalytic activity. At the same time, they also have comprehensive excellent characteristics such as high temperature resistance, oxidation resistance, and corrosion resistance, making them important catalyst materials. It is highly valued for its excellent activity, selectivity, and stability, and is widely used in reactions such as hydrogenation, dehydrogenation, oxidation, reduction, isomerization, aromatization, cracking, synthesis, etc. It plays a very important role in the fields of chemical engineering, petroleum refining, petrochemicals, pharmaceuticals, environmental protection, and new energy.