Catalyst support, also known as support, is one of the components of supported catalyst. It is the skeleton of catalyst active components, supports active components, decomposes active components, and increases the strength of catalyst.However, the support itself generally does not have catalytic activity.

Most supports are products in the catalyst industry, including alumina carrier, silica gel carrier, activated carbon carrier and some natural products such as pumice and diatomite."Active component name - carrier name" is often used to indicate the composition of supported catalysts, such as nickel alumina catalyst for hydrogenation and vanadium oxide diatomite catalyst for oxidation.

There are many kinds of catalyst supports, including metal oxide support, molecular sieve support and other supports. When selecting the support, it is necessary to make a comprehensive test on the efficiency, catalytic activity, firmness of catalyst load, service life and price.