Platinum is a common catalyst that plays an important role in many chemical reactions. The main principle of platinum catalysis is to achieve the catalytic effect of chemical reactions by adsorbing surface molecules.
Platinum has high catalytic activity on the surface and can achieve catalytic reactions by adsorbing and desorbing molecules. The adsorption of platinum is irreversible. When the molecules on the adsorbed surface are not affected by the outside world, their chemical properties will change and show special catalytic properties.

The specific principles of platinum as a catalyst can be summarized as follows:

1. Adsorption

The surface of platinum has a high adsorption capacity and can adsorb oxygen, hydrogen and other molecules. Oxygen molecules adsorbed on the platinum surface can form oxides with platinum atoms on the surface through electron transfer, while hydrogen molecules are adsorbed on the metal positions on the surface to form hydrogen atoms.

2. Active site

Platinum has many active sites on the surface. After adsorbing oxygen molecules, the oxygen molecules will occupy the active sites on the surface of platinum atoms. The adsorption of these oxygen molecules can catalyze various reactions such as oxidation, hydrogenation, dehydrogenation, and reduction.

3. Combination effect

Platinum can not only adsorb single molecules, but also adsorb multiple molecules together to form a complex. The formation of this complex usually requires certain temperature and reaction conditions, but the formation of the complex can increase the efficiency and rate of the chemical reaction.

4. Catalyst Renewability

Platinum catalysts have good regenerability. Through high-temperature regeneration, molecules and products adsorbed on the surface can be removed and the active sites on the catalyst surface can be restored.
The principle of platinum as a catalyst is to use its surface adsorption and active sites to enhance reaction efficiency and speed. The preparation and application of platinum catalysts has become an important field in the chemical industry and has high application value.

Platinum catalyst