Question

2.1 The surface area of a solid catalyst as the solid is pulverized.​

Answer 1

Total catalyst surface area is usually measured by nitrogen adsorption using the BET method. This is a fundamental characteristic of most heterogeneous catalysts and liable to change during preparation, conditioning, in use and particularly if exposed to excessive temperatures.

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Answer 2

The surface area of a solid catalyst increases as the solid is pulverized. When a solid catalyst is pulverized, its surface area increases.

Explanation:

• Total catalyst surface area is usually measured by nitrogen adsorption using the BET method.

• This is a fundamental characteristic of most heterogenous catalysts and liable to change during preparation, conditioning, in use and particularly if exposed to excessive temperatures.

• Extended surface area catalysts have gained a lot of interest in recent years.

• They comprise large area surfaces extended in two dimensions such as thin films, possessing larger radii of curvature and having greater resistance to surface area loss.

• Surface of a body on which a catalytic reaction takes place in a chemically reacting mixture in contact with the surface.