The most common method of measuring the specific surface area at present is the volumetric method of N2 adsorption on the surface of the material under study. The specific surface is calculated by the volume of gas required for the formation of a monolayer of adsorbate molecules on the sample surface.

How do you calculate particle size from specific surface area?

The most common method of measuring the specific surface area at present is the volumetric method of N2 adsorption on the surface of the material under study. The specific surface is calculated by the volume of gas required for the formation of a monolayer of adsorbate molecules on the sample surface.

Is surface area the same as particle size?

Specific Surface Area and Particle Size The relationship between the particle size and surface area. The specific surface area increases with decreasing particle size. The specific surface area is also increased if the particle has pores.

How do you calculate particle size?

particle size: x1, min. particle size: xn+1) is divided intonseparate intervals, and each of these particle size intervals is taken to be [xi, xi+1] (j = 1,2,…. n). The element of q qj(j= 1,2,….n) is the particle amount corresponding to the particle size interval [xi, xi+1]. Normally, the volume standard is used.

What is surface area of particle?

SSA is defined as the surface area of the solid particles divided by the mass of the solid particles [41].

What is CSA sphere?

The CSA of sphere is 4πr2.

How do you calculate sphericity of a particle?

A simplified sphericity index is defined as Ψ = dn/a [45], where dn is the nominal diameter (diameter of the sphere having the same volume as the object).

What size is a particle?

Particle sizes are measured in microns (μ). A micron is 1/1000 mm. or 1/25,400 in. A millimicron (mμ) is 1/1000 of a micron, or 1/1,000,000 mm. Usually particle size is designated as the average diameter in microns, although some literature reports particle radius.

Why do smaller particles have a larger surface area?

It also means that when a given volume of material is made up of smaller particles, the surface area of the material increases. Therefore, as particle size decreases, a greater proportion of the particles are found at the surface of the material.

What is the size of a particle?

What is CSA and TSA?

Curved Surface Area (CSA) – It includes the area of all the curved surfaces. Lateral Surface Area (LSA) – It includes the area of all the surface excluding the top and bottom areas. Total Surface Area (TSA) – It includes the area of all the surfaces of the object including the bases.

What is the relationship between surface area and particle size?

How surface area is related to the particle size? Because surface area is the means by which a solid interacts with its surroundings, be it gas, liquid or other solids. As particle size decreases, the surface area per unit volume (or mass) increases. Click to see full answer.

What is the specific surface of a particle?

Definition of specific surface. : the ratio of the total surface of a substance (such as an adsorbent) to its volume : surface area (as of a finely divided powder) per unit mass. Also to know, how do you find the surface area of a particle?

How do you calculate the diameter of a particle?

Without going into a long derivation, the diameter (D) of a particle (in microns) can be estimated from a material with a known surface area (SA, in m2/gram) and density (p, in gram/cm3) using the equation D = 6 / (SA * p).

How do you find the surface area of a particle?

That depends upon the shape of the particles. * If they are spherical, the surface area is 4*pi*r^2, where r is the radius of the particle. * If they are cuboidal, the surface area is b*w*h, where b, w, h are the lengths of the sides.