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Powder X-ray diffraction, as one of the methods for the study of drug polymorphism, has the advantages of no sample destruction and simple operation.

SBA-15 is a mesoporous silicon-based molecular sieve with a highly ordered hexagonal straight pore structure (p6mm), the pore size can vary from 5 to 50 nm, and the pore wall is thicker.

X-ray diffraction spectroscopy mainly analyzes the crystal state and microstructure of materials, and there are two X-ray diffraction measurement methods for crystal analysis.

In the past 10 years, the Institute of Physics of the Chinese Academy of Sciences has used powder diffraction method to determine the crystal structure of many inorganic and organic compounds.

The composition of the diffraction pattern is mainly the position and intensity of the diffraction peak, and our analysis of the XRD pattern is based on the changes in the intensity and position to explain the changes in the micro and macro of the material.

SBA-15 is a kind of mesoporous molecular sieve, and its synthesis is another important chemical technology emerging in recent years.

Parallel beam XRD of X-ray optical crystals has been successfully applied in thin film analysis, sample texture evaluation, crystal phase and structure monitoring, etc.

As one of the important means of material structure characterization, XRD is widely used in materials, physics, chemistry, medicine and other fields.

In X-ray analysis, an instrument used to measure the Angle between an incident X-ray beam and a diffracted X-ray beam. The diffractometer automatically maps the variation of the diffraction intensity with the 2θ Angle.