In-Situ Synthesis of Layered Double Hydroxide/Silica Aerogel Composite and Its Thermal Safety Characteristics
Abstract
:1. Introduction
2. Results and Discussion
2.1. Phase Composition of MgAl-LDH and LDH/SA Composites
2.2. Microstructures of MgAl-LDH and LDH/SA
2.3. Pore Structure
2.4. Density, Porosity and Thermal Conductivity
2.5. Surface Properties and Hydrophobicity
2.6. Thermal Safety Characteristics
2.6.1. Composition Analysis of LDH/SA under Heat Treatment
2.6.2. Thermal Analysis
2.6.3. Gross Calorific Value
3. Conclusions
4. Materials and Methods
4.1. Raw Materials
4.2. Preparation of MgAl-LDH
4.3. Preparation of LDH/SA Composites
4.4. Methods of Characterization
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Samples | BET Surface Area (m2/g) | Pore Volume (cm3/g) | Average Pore Size * (nm) | Total Pore Volume (Vpore) (cm3/g) | Average Pore Diameter (Dpore) (nm) |
---|---|---|---|---|---|
SA | 903.7 | 2.8 | 12.2 | 8.5 | 37.6 |
LDH/SA-5% | 864.3 | 2.7 | 12.4 | 8.1 | 37.7 |
LDH/SA-10% | 814.5 | 2.7 | 13.1 | 7.5 | 36.7 |
LDH/SA-20% | 730.7 | 2.9 | 15.6 | 7.3 | 39.9 |
Tonset (°C) | Tpeak1 (°C) | Tpeak2 (°C) | Tpeak3 (°C) | |
---|---|---|---|---|
SA | 273.6 | 333.6 | ||
LDH/SA-5% | 327.2 | 332.0 | 377.8 | 415.6 |
LDH/SA-10% | 344.7 | 360.4 | 417.2 | 469.4 |
LDH/SA-15% | 350.2 | 372.9 | 458.2 | 488.3 |
LDH/SA-20% | 367.7 | 393.5 | 494.4 | 549.8 |
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Sun, M.; Wang, Y.; Wang, X.; Liu, Q.; Li, M.; Shulga, Y.M.; Li, Z. In-Situ Synthesis of Layered Double Hydroxide/Silica Aerogel Composite and Its Thermal Safety Characteristics. Gels 2022, 8, 581. https://doi.org/10.3390/gels8090581
Sun M, Wang Y, Wang X, Liu Q, Li M, Shulga YM, Li Z. In-Situ Synthesis of Layered Double Hydroxide/Silica Aerogel Composite and Its Thermal Safety Characteristics. Gels. 2022; 8(9):581. https://doi.org/10.3390/gels8090581
Chicago/Turabian StyleSun, Mengtian, Yang Wang, Xiaowu Wang, Qiong Liu, Ming Li, Yury M. Shulga, and Zhi Li. 2022. "In-Situ Synthesis of Layered Double Hydroxide/Silica Aerogel Composite and Its Thermal Safety Characteristics" Gels 8, no. 9: 581. https://doi.org/10.3390/gels8090581