Original

Edited

A number of research work utilize the adsorption of inert gases for understanding the AC pore structure in determining the appropriateness for various applications.

Several previous research studies have utilized the adsorption of inert gases to understand the AC pore structure and determine the appropriateness for various applications.

Because:

1. Refer to past events that have ended, but are linked to the present in the present perfect.
2. The word ‘work’ generally refers to a life’s work or some subset of it. Research papers should be described as ‘studies’.