quality control of raw materials

What Techniques Are Used for Quality Control?

Various analytical techniques are employed to ensure the quality of raw materials:

Spectroscopy: Techniques like X-ray Diffraction (XRD) and Fourier-Transform Infrared Spectroscopy (FTIR) are used to determine the crystallographic structure and identify functional groups, respectively.
Chromatography: Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC) help in analyzing the purity and composition of raw materials.
Microscopy: Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) provide detailed images of the particle size and morphology.
Thermal Analysis: Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA) are used to assess the thermal stability and composition of the raw materials.
Surface Area Analysis: The Brunauer-Emmett-Teller (BET) method is commonly used to determine the surface area of materials, which is crucial for catalytic activity.