XRD Full Form In Chemistry

The XRD full form in chemistry is X-ray powder diffraction

It is a laboratory-based analytical method primarily used for phase identification of crystalline material.
XRD diffraction is often used to compare base catalyst and their modification to see if the crystal structure is retained and how much crystanality the catalyst after the modification has gained or lost
For example, XRD graph shown below contains parent catalyst HZSM5 is compared with Si modified ZSM5 (Si/HZSM-5), Zn modified Si/HZSM-5 catalysts (1 wt% ZnSi/HZSM-5, 1.5 wt% ZSM-5) and 1wt% Zn/HZSM-5.

XRD patterns

How to explain XRD results

One can explain XRD analysis from the figure given above in the following way

The figure shows the XRD patterns of the catalysts. From the figure, it can be seen that the parent catalyst HZSM-5 exhibit characteristic peak between 5-10°and 21-25°.
The XRD peaks for the Si-modified, Zn-Si modified and Zn modified HZSM5 respectively are very similar to those of HZSM-5.
No new diffraction peak is observed on the modified catalysts compared to that of HZSM5 catalyst which suggests that the MFI structure of the HZSM-5 catalyst was intact.
No characteristic peak of ZnO at 2θ = 31.6°, 36.1° were observed on Zn-Si modified catalysts and Zn modified HZSM5 suggesting that Zn species were highly dispersed on parent and Si/HZSM5 catalysts respectively

I hope this article helped you to know the XRD full form and how to explain XRD results