Platinum catalysts used to catalyze hydrosilylation reactions are mainly divided into homogeneous catalysts and heterogeneous catalysts. Among them, the homogeneous catalyst and the reactant are in the same phase, and there is no phase interface. In the hydrosilylation reaction, the homogeneous catalyst generally refers to a liquid catalyst.

But there are many substances that can "poison" platinum catalysts, causing their catalytic activity to decrease or even become inactive. For example, organic compounds containing elements such as nitrogen, phosphorus, and sulfur, and ionic compounds containing heavy metals such as tin, lead, mercury, bismuth, and arsenic. Therefore, special attention should be paid to the use of platinum catalysts to avoid exposure of platinum catalysts to these poisoning substances. There are many types and forms of platinum catalysts. Therefore, in the application process, it is necessary to select a suitable platinum catalyst according to the characteristics of the reaction system to obtain the best catalytic effect.