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Updated: Feb 5, 2026

Synthesis and Characterization of Functionalized Metal-organic Frameworks

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Published on: September 5, 2014

Goma de silicona curable mediante liberación controlada de Pt homogéneo desde una cápsula a base de un marco

Ya-Qi Xue¹, Lei Wang², Yin Wang¹

¹Department of Chemistry, Key Laboratory of Advanced Energy Material Chemistry, Renewable Energy Conversion and Storage Center and Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin 300071, P. R. China.

ACS applied materials & interfaces

|February 4, 2026

Abstract:

Platinum-based hydrosilylation catalysts are primarily applied in the curing of silicone rubber. However, the commercial Karstedt catalysts used in industrial applications seriously suffer from rapid oxidation in air, uncontrolled activity at room temperature, rigorous storage conditions yet short pot-life, poor thermal stability, and complicated operation packages. Herein, Pt@MOFs, constructed by immobilizing catalytically active sites Pt inside the pores of a metastable MOF-based host with selected decomposition temperature, acts as a "controlled-release MOF-based capsule" to keep a long pot-life during storage and transport at ambient conditions, control the curing temperature of hydrosilylation, and releases the catalytically active Pt sites at required temperature for in situ polymer formation. Additionally, the unique nanosized crystalline MOF carriers are dominant for uniform dispersion in polysiloxanes and guarantee the excellent oxidation resistance in the Pt@MOFs catalytic system, which provides a new generation catalyst for widely used silicone rubber packages and an innovative pathway for the application of metastable MOF materials. Honeywell® has initiated kilogram-scale silicon rubber packages with Pt@MOFs.

Palabras clave:

paquetes de caucho de silicona a escala de kilogramos larga vida útil marco metal-orgánico metaestable centros de platino curado de caucho de silicona

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