Chemical type
- Inorganic hygroscopic material (amorphous silica)
- Mesoporous support material (amorphous silica)
Key properties
- High hygroscopicity
- Si-O-Si stretches at 1100 cm⁻¹ in FTIR
- Commonly used for moisture adsorption
- Equilibrium adsorption capacity 1.1-1.4 times higher in composites under 80-90% RH
- Pore size 60 Å, 70–230 mesh, typical surface area 480–540 m²/g; mechanically robust, low cost, commercially available, high oxidative stability; low heat capacity; enables high amine dispersion and scalability; retains amorphous structure (broad XRD hump ~22–23° 2θ) after infiltration and multiple adsorption-desorption cycles; no particle fusion or collapse observed by SEM
- Hygroscopic component in calcium alginate microspheres
- Enhances moisture adsorption in HPCC (e.g., optimal with SA at 5:1 mass ratio)
- Applied in building materials for passive humidity control
- Support matrix for PEI infiltration (wet method with methanol, 8:1 methanol:silica ratio, dried at 80 °C); forms PEI-infused adsorbent bed (~41 g in 200×60×20 mm aluminum chamber) for fixed-bed CO₂ breakthrough experiments; provides structure for photothermal/thermal regeneration at ~110 °C
Classification by use
- Hygroscopic materials
- Adsorbents in composites
- Inorganic fillers for environmental regulation
- Support materials for adsorbents
- Materials used in carbon capture and storage (CCUS) solid sorbents
A trustworthy factory and manufacturer
Demei Chemical Technology Co., Ltd. is a modern high-tech enterprise integrating R&D, production, and sales. The company's founder, Dr. Arron, born in April 1975, graduated from the School of Mechanical Engineering at Yanshan University and has been engaged in research in the fields of mechanical engineering and chemical synthesis for many years. The company's products focus on the chemical industry, primarily dealing in chemical raw materials and chemical production machinery and equipment. With its strong technical capabilities, advanced production equipment, and strict quality management system, the company has earned the trust of customers worldwide.
- [Cite:1] Study on synthesis and hygrothermal performance of calcium alginate-based moisture-adsorbing phase change composite, Next Materials, Volume 10, January 2026, 101401
- [Cite:2] Solar-driven photothermal desorption of CO₂ from PEI-infused silica gel, Applied Thermal Engineering, Volume 286, February 2026, 129459
