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Porous Glass with Layered Morphology Prepared by Phase Separation.
Qiang Chen1,2, Yihong Chen1,2, Zhe Wang1,2
1State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China.
Materials (Basel, Switzerland)
|March 13, 2025
Summary
Researchers developed a novel layered porous glass for high-temperature catalytic applications, specifically for denitrification. This customizable material demonstrates excellent thermal stability and high adsorption capacity, offering a new strategy for advanced material development.
Area of Science:
- Materials Science
- Chemical Engineering
- Catalysis
Background:
- Developing high-performance catalytic materials for high-temperature applications like denitrification is crucial.
- Porous materials with controlled structures offer advantages in adsorption and separation processes.
- Sodium borosilicate glasses provide a versatile platform for creating tailored porous architectures.
Purpose of the Study:
- To synthesize a porous glass with a controllable layered structure for high-temperature catalytic denitrification.
- To investigate the relationship between glass composition, heat treatment, and the resulting porous structure.
- To evaluate the material's suitability for catalytic applications, including its thermal stability and V2O5 loading capacity.
Main Methods:
- Phase-separation method using sodium borosilicate glass with varying R values.
- Heat treatment within the phase-separation temperature range.
- Acid-leaching to remove the boron-rich phase and create the layered porous structure.
- Characterization using infrared spectroscopy, Raman spectroscopy, and scanning electron microscopy (SEM).
- Evaluation of high-temperature stability and V2O5 catalyst loading via impregnation.
Main Results:
- A controllable layered porous glass structure was successfully prepared.
- Silicon layer thickness precisely controlled between 2-23 μm by adjusting heat treatment time (1.25-10 h).
- Material exhibits excellent high-temperature stability, retaining pore structure after calcination at 600 °C for 10 h.
- Uniform loading of V2O5 catalyst achieved while preserving the layered structure.
- Layered pore characteristics (high contact area, storage capacity, mass transfer) confirmed suitability for adsorption and separation.
Conclusions:
- The phase-separation method enables the development of customizable layered porous glass materials.
- The synthesized material demonstrates significant potential as a high-performance, high-temperature catalyst for denitrification.
- This study presents a novel strategy for designing tailored porous materials for advanced applications.
