Question

What is meant by activation of the adsorbent how is it achieved?

Answer 1

Explanation:

Activation of an adsorbent means, increasing the adsorbing power of the adsorbent. This can be achieved as follows: (i) Metallic adsorbents can be activated by making their surface rough by mechanical rubbing or by chemical action. By doing so, it will increase the specific area of the adsorbent.

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Answer 2

Answer:

By activating an adsorbent, we tend to increase the adsorbing power of the adsorbent.  Some ways to activate an adsorbent are:  

(i) By increasing the surface area of the adsorbent. This can be done by breaking it into smaller pieces or powdering it.  

(ii) Some specific treatments can also lead to the activation of the adsorbent. For example, wood charcoal is activated by heating it between 650 K and 1330 K in vacuum or air. It expels all the gases absorbed or adsorbed and thus, creates a space for adsorption of gases.