Method for the Production of Porous Silicon-Based Materials and Materials Derived Therefrom and Their Applications

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This patent presents a method for producing porous, silicon-based materials and their derivatives, including ceramics and composite materials. The core process involves reacting hydridochlorosilanes with pyridine or its derivatives to form addition compounds, which are then thermally decomposed (pyrolyzed) to yield porous silicon-based structures with tunable nanometer-scale network architectures. These materials can subsequently be converted into a variety of silicon-based polymers, oxides, nitrides, or composite materials, and have applications in filtration, energy, catalysis, and materials science.

Use CasesContent extracted from patent full text and abstract with AI.

• Advanced filter materials for gas and liquid purification, including micro- and nano-filtration membranes
• Electrodes, electrolytes, and separators in lithium-ion and other advanced batteries
• Carrier materials for catalysts in chemical processing and environmental remediation
• Gas absorbers or storage media for hydrogen or other gases
• Thermal insulation materials for high-performance applications
• Surface coatings for hydrophilic or hydrophobic modification, such as anti-fog or self-cleaning surfaces
• Fabrication of polymer-polymer, ceramic-polymer, ceramic-ceramic, and ceramic-metal composite materials with high mechanical or thermal performance

BenefitsContent extracted from patent full text and abstract with AI.

• Simple, multi-purpose synthesis route consolidating several steps and avoiding toxic or expensive reagents found in prior methods
• Ability to tune pore size and network morphology at nano- to microscale for different applications
• Production of materials with high specific surface area and low density, beneficial for filtration, catalysis, and energy storage
• Wide versatility—final composition (Si, SiO2, Si3N4, SiS2, etc.) and surface functionalization can be tailored for the target use
• Porous materials remain structurally robust due to chemically bonded network topology (filaments joined at nodes), offering high mechanical stability
• Process enables direct formation of novel nanostructured ceramics and composites not previously feasible by conventional means
• Potential for high-yield, scalable manufacturing due to fewer synthesis steps and solvent-free operation

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Patent Abstract

The invention relates to a method for producing porous materials from silicon-based polymers or silicon-based inorganic solid materials by forming addition compounds from hydridochlorosilanes and pyridine or pyridine derivatives, followed by pyrolysis.