Related Experiment Video
Updated: Feb 5, 2026
11:27
Synthesis and Characterization of Functionalized Metal-organic Frameworks
Published on: September 5, 2014
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Controllable Silicone Rubber Curing via Controlled Release of Homogeneous Pt from a Metal-Organic Framework-Based
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
Summary
New platinum-based catalysts immobilized in metal-organic frameworks (MOFs) offer improved stability and controlled release for silicone rubber curing. These Pt@MOFs provide enhanced oxidation resistance and longer pot-life, enabling efficient in-situ polymer formation.
Area of Science:
- Materials Science
- Catalysis
- Polymer Chemistry
Background:
- Platinum-based catalysts, like Karstedt's catalyst, are crucial for silicone rubber curing.
- Commercial catalysts face challenges including oxidation, poor thermal stability, and short pot-life.
- There is a need for advanced catalysts with improved handling and performance.
Purpose of the Study:
- To develop a novel platinum-based catalyst with enhanced stability and controlled activity.
- To address the limitations of conventional hydrosilylation catalysts.
- To create a new generation of catalysts for silicone rubber applications.
Main Methods:
- Immobilization of platinum (Pt) nanoparticles within a metastable metal-organic framework (MOF) host (Pt@MOFs).
- Design of MOF structure for controlled release of Pt at a specific temperature.
- Evaluation of Pt@MOFs for uniform dispersion, oxidation resistance, and catalytic performance in silicone rubber curing.
Main Results:
- Pt@MOFs function as "controlled-release capsules," ensuring long pot-life and ambient storage stability.
- The catalysts exhibit controlled curing temperatures and excellent oxidation resistance.
- Uniform dispersion of nanosized MOF carriers in polysiloxanes was achieved.
- Kilogram-scale silicone rubber packages utilizing Pt@MOFs have been initiated.
Conclusions:
- Pt@MOFs represent a new generation of stable and controllable hydrosilylation catalysts.
- This approach offers an innovative pathway for utilizing metastable MOF materials.
- The developed catalysts are suitable for advanced silicone rubber formulations and industrial applications.
Keywords:
kilogram-scale silicon rubber packageslong pot-lifemetastable metal–organic frameworkplatinum centerssilicone rubber curingMore Related Videos
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