FABRICATION OF TERNARY SILICA-CALCIUM-MAGNESIUM AEROGELS: EFFECT OF FEEDING RATE AND MOLAR RATIO ON PROPERTIES-Reference-Cited by-同舟云学术

FABRICATION OF TERNARY SILICA-CALCIUM-MAGNESIUM AEROGELS: EFFECT OF FEEDING RATE AND MOLAR RATIO ON PROPERTIES

Published:2023-12-01 Issue:4 Volume:11 Page:905-915
ISSN:2667-8055
Container-title:Konya Journal of Engineering Sciences
language:
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Author:

KARAKUZU İKİZLER Burcu¹^ORCID,TERZİOĞLU Pınar²^ORCID,TEMEL SOYLU Tülay Merve³^ORCID,YÜCEL Sevil¹^ORCID

Affiliation:

1. YILDIZ TECHNICAL UNIVERSITY

2. BURSA TECHNICAL UNIVERSITY

3. YILDIZ TEKNİK ÜNİVERSİTESİ

Abstract

The silica-calcium-magnesium ternary aerogels were prepared by a solvent exchange method and a subsequent ambient pressure drying process. The effect of process parameters such as feeding rate (9-70 mL.min-1) and molar ratio (Si/(Ca:Mg) = 1:1 - 3:1) on the material characteristics including density, elemental content, surface area, pore size, pore volume, and morphology of powders were investigated. Aerogels were characterized by Fourier transform infrared spectroscopy (FTIR), inductively coupled plasma optical emission spectroscopy (ICP-OES), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET), Barrett–Joiner–Halenda (BJH) and tapping density analysis. It was found that the molar ratio of Si/(Ca:Mg) could remarkably affect the surface area and density of aerogels, while the feeding rate had slight effect. The resultant aerogels exhibited high specific surface areas. The results showed that the aerogel has a Si/(Ca:3Mg) molar composition obtained with 9 mL.min-1 had the highest surface area (524 m2.g−1). The increase of Ca to Mg molar ratio caused a decrease in the surface area and density of samples. The resultant aerogels are promising candidates as adsorbents to remove various contaminants.

Funder

TÜBİTAK 1005

Publisher

Konya Muhendislik Bilimleri Dergisi

Reference27 articles.

1. T. Zhou, X. Cheng, Y. Pan, C. Li, L. Gong, and H. Zhang, “Mechanical performance and thermal stability of glass fiber reinforced silica aerogel composites based on co-precursor method by freeze drying,” Applied Surface Science, vol. 437, pp. 321–328, 2018.

2. F. Pan, B. Zhang, Y. Ding, L. Wang, F. Xie, W. Cai, S. Liu, and J. Zhou, “New composite aerogel-like adsorbents for thiophene based on π-complexation,” Separation and Purification Technology, 192, pp. 46–54, 2018.

3. T. M. Temel, B. K. İkizler, P. Terzioğlu, S. Yücel, and Y. B. Elalmış, “The effect of process variables on the properties of nanoporous silica aerogels: an approach to prepare silica aerogels from biosilica,” Journal of Sol-Gel Science and Technology, vol. 84, no. 1, pp. 51–59, Jul. 2017.

4. J. L. Mohanan and S. L. Brock, “Influence of Synthetic and Processing Parameters on the Surface Area, Speciation, and Particle Formation in Copper Oxide/Silica Aerogel Composites,” Chemistry of Materials, vol. 15, no. 13, pp. 2567–2576, May 2003.

5. C. Zhao, Y. Li, W. Ye, X. Shen, X. Yuan, C. Ma, and Y. Cao, “Performance regulation of silica aerogel powder synthesized by a two-step Sol-gel process with a fast ambient pressure drying route,” Journal of Non-Crystalline Solids, vol. 567, pp.120923, Sep 2021.