In industrial fields such as organosilicon and electronic packaging, platinum catalysts are the core materials driving efficient hydrosilylation reactions. However, traditional platinum catalysts are vulnerable to poisoning by substances like sulfur, phosphorus, nitrogen compounds, and heavy metal ions, which cover the active sites or induce chemical deactivation, leading to reaction stagnation, yellowing, or blackening of products. The emergence of anti-poisoning platinum catalysts offers an innovative solution to this industry-wide pain point.

Mechanisms of Poisoning and Breakthroughs in Resistance
Catalyst poisoning primarily occurs in two ways: physical adsorption of poisons onto active sites, reducing available reaction positions, and chemical reactions between poisons and platinum atoms, forming inactive compounds. Anti-poisoning catalysts overcome these issues through molecular design, creating protective barriers around platinum active sites or introducing co-catalysts like rhenium to form stable coordination structures, significantly reducing poison adsorption. For example, a second-generation anti-poisoning catalyst developed by a research team maintains over 90% activity in sulfur-containing environments, tripling the poison resistance compared to traditional catalysts.

Demonstrated Industrial Value
In LED power encapsulant production, traditional catalysts often fail due to contact with nitrogen-containing additives, preventing gel curing. Anti-poisoning catalysts optimize platinum dispersion, uniformly distributing active components within silicone oil carriers to form a three-dimensional protective network, maintaining catalytic efficiency even under high poison concentrations. Field tests by an electronics company showed product yield rising from 72% to 98%, with equipment downtime for maintenance reduced by 65%.

Future Research Directions
Current anti-poisoning catalyst development focuses on two areas: improving platinum utilization via nanocarrier technologies to reduce precious metal usage, and creating smart-responsive catalysts that automatically release protective agents when poison concentrations exceed thresholds. With advances in materials science, anti-poisoning platinum catalysts hold promise for broader applications in emerging fields like hydrogen energy and biomedicine.

Antitoxic Type Platinum Catalyst, plz check MY 8118B