Surface Chemistry

Catalysis A substance which increases the speed of a reaction without being consumed in the reaction is called a catalyst. The phenomenon of increasing the rate of reaction by the use of catalyst is called catalysis. Living cells contain thousands of different kinds of proteins called enzymes which act as catalysts. A catalyst provides an entirely new path for the reaction … [Read more...] about Catalysis and Classification of Catalyst

Applications of Adsorption Some of the important applications of adsorption are given below: 1) In gas masks Activated charcoal or a mixture of adsorbents is generally used in gas masks to adsorb poisonous and toxic gases from air. These masks are commonly used by the miners because there are poisonous gases like CO, CH4 etc. in the atmosphere in the coal mines. … [Read more...] about Application of Adsorption

Adsorption of Gases on Solids The extent of adsorption of a gas on a solid surface is affected by the following factors: 1) Nature of the gas 2) Nature of adsorbent 3) Specific area of the adsorbent 4) Effect of temperature 5) Effect of pressure 6) Activation of adsorbent. Nature of the gas (or adsorbate) The adsorption depends upon the nature of the gas … [Read more...] about Adsorption of Gases On Solids

Types of Adsorption Depending upon the nature of forces which hold the molecules of the adsorbate on the surface of the adsorbent, the adsorption is classified into two types: 1) Physical adsorption and 2) Chemical adsorption. Physical Adsorption When the particles of the adsorbate are held to the surface of the adsorbent by the physical forces such as van der Waals … [Read more...] about Types of Adsorption