3-Aminopropyltrimethoxysilane

Catalog NumberHG13822565

CAS Number13822-56-5

CategorySilane Coupling Agent

Molecular Weight

179.29

Molecular Formula

C6H17NO3Si

Boiling Point

91-92 °C at 15 mmHg(lit.)

Flash Point

182 °F

Density

1.027 g/mL at 25 °C(lit.)

Appearance

Clear colorless liquid

Application

Used as primers and adhesion promoters.

Functional Group

Amino

Specific Gravity

1.027

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Case Study

3-Aminopropyltrimethoxysilane as a Surface Modifier for CO₂ Adsorption on Mesoporous Silica

Sanchez-Vicente, Yolanda, et al. Chemical Engineering Journal 264 (2015): 886-898.

3-Aminopropyltrimethoxysilane (3-APTS) acts as a surface functionalization agent for SBA-15 mesoporous silica to enhance carbon dioxide capture.
Experimental Protocol: SBA-15 is functionalized with 3-APTS in supercritical carbon dioxide (scCO₂) at 60°C and 20 MPa for 2 h. The grafting density is controlled by varying the 3-APTS concentration from 0.5 to 3.0 mmol/g. CO₂ adsorption isotherms are measured at 25°C using a volumetric adsorption apparatus at pressures from 0 to 4.0 MPa.
Performance Evaluation: The grafting density of 3-APTS on SBA-15 reaches up to 2.7 mmol/g. The functionalized material exhibits CO₂ adsorption capacities of 0.7-1.5 mmol/g at ambient pressure (0.1 MPa) and 8-12 mmol/g at 4.0 MPa. The amine groups on the grafted 3-APTS provide chemisorption sites for CO₂ via carbamate formation. This scCO₂-assisted grafting method produces an efficient adsorbent for carbon capture applications.

3-Aminopropyltrimethoxysilane as a Bridging Agent for Trimetallic Nanoparticle Synthesis

Pandey, P. C., et al. Catalysis Science & Technology 6.11 (2016): 3911-3917.

3-Aminopropyltrimethoxysilane (3-APTMS) serves as a bridging agent for the synthesis of Ag@(PdAu) trimetallic nanoparticles for catalytic applications.
Experimental Protocol: Ag nanoparticles are first synthesized and then surface-modified with 0.5 M 3-APTMS in ethanol. Pd and Au precursors (H₂PdCl₄ and HAuCl₄) are reduced using 1.9 M formaldehyde in the presence of the 3-APTMS-modified Ag nanoparticles at 25°C. The resulting trimetallic nanoparticles are characterized by transmission electron microscopy and UV-visible spectroscopy. Catalytic activity is evaluated by monitoring the reduction of p-nitrophenol (PNP) by NaBH₄ using UV-visible spectroscopy at 400 nm.
Performance Evaluation: The Ag@(PdAu) trimetallic nanoparticles exhibit a rate constant of 0.140 0.0025 s^-1 for PNP reduction, demonstrating excellent catalytic activity. The 3-APTMS layer enables controlled deposition of Pd and Au shells on the Ag core. The trimetallic structure shows enhanced catalytic performance compared to monometallic and bimetallic counterparts.

3-Aminopropyltrimethoxysilane as a Surface Modifier for Dye Removal on Mesoporous Silica

Kang, Jin-Kyu, et al. Desalination and Water Treatment 57.15 (2016): 7066-7078.

3-Aminopropyltrimethoxysilane (APTMS) acts as a functionalization agent for MCM-41 mesoporous silica to enhance dye adsorption capacity.
Experimental Protocol: MCM-41 is functionalized with APTMS via post-synthesis grafting in toluene under reflux at 110°C for 24 h. The functionalized material (f-MCM-41) is characterized by nitrogen adsorption-desorption, X-ray diffraction, and Fourier-transform infrared spectroscopy. Batch adsorption experiments for Acid Blue 25 (AB25) and Methylene Blue (MB) are conducted at 25°C with initial dye concentrations from 10 to 200 mg/L at pH 7.
Performance Evaluation: The BET surface area of f-MCM-41 is 509.9 m²/g. The maximum adsorption capacities (Q_m) are 45.9 mg/g for AB25 and 126.1 mg/g for MB, indicating effective removal of both anionic and cationic dyes. The amine groups on APTMS provide electrostatic interactions with dye molecules. The adsorption follows the Langmuir isotherm model with high correlation coefficients.

• Molecular Weight: 179.29
• Molecular Formula: C6H17NO3Si
• Boiling Point: 91-92 °C at 15 mmHg(lit.)
• Flash Point: 182 °F
• Density: 1.027 g/mL at 25 °C(lit.)
• Appearance: Clear colorless liquid
• Application: Used as primers and adhesion promoters.
• Functional Group: Amino
• Specific Gravity: 1.027