In our life and production, it is often applied to Activated carbon Nowadays, with the innovation and optimization of advanced science and technology, activated carbon also has broad development space in the chemical industry.
Today, Jiangxi cayon Honeycomb activated carbon I will tell you about the role of activated carbon as catalyst carrier in the chemical industry.
Catalyst carrier, also known as support, is one of the components of the supported catalyst and the skeleton of the active component of the catalyst. It supports the active component, disperses the active component, and increases the strength of the catalyst. However, the carrier itself generally does not have catalytic activity.
Most carriers are products in the catalyst industry, such as alumina carrier, silica gel carrier, activated carbon carrier and some natural products such as pumice, diatomite, etc. "Name of active component - name of carrier" is often used to indicate the composition of supported catalyst, such as nickel alumina catalyst for hydrogenation and vanadium oxide diatomite catalyst for oxidation.
Activated carbon is a kind of porous carbonaceous material. It has highly developed pore structure, large specific surface area, strong chemical properties, and certain pore volume and pore size. Therefore, it has good adsorption ability. As a catalyst carrier, it has considerable advantages to provide load and reaction center.
The catalyst can be supported by immersing the activated carbon in the aqueous solution of metal salt. In order to make it evenly dispersed, the activated carbon with oxidized surface shall be used. Its performance as a support is determined by the pore structure and surface chemical structure. Surface acidic functional groups, free radicals, electron receiving ability, etc. can give various influences. Pt, Pd and other platinum group catalysts supported on activated carbon have excellent catalytic performance for hydrogenation, especially for hydrogen related reactions.
The application of activated carbon on catalyst support is as follows:
(1) Isomerization Use nickel carbon catalyst to isomerize vegetable oils (such as cottonseed oil, linseed oil, rapeseed oil, etc.) from non conjugated oils to conjugated ones.
(2) Hydrogenation, dehydrogenation and dehydrogenation aromatization, cyclization and isomerization: Such catalysis can be achieved by using palladium or platinum loaded activated carbon as catalyst.
(3) Low pressure polymerization of olefins Using activated carbon containing nickel, cobalt or their oxides as catalyst, olefins can be polymerized.
(4) In vinylon production, synthetic fiber uses activated carbon containing zinc acetate as catalyst to synthesize vinyl acetate from acetylene and acetic acid.
(5) Rosin reprocessing uses palladium containing activated carbon as catalyst to produce disproportionated rosin and hydrogenated rosin.
(6) The active carbon containing mercury dichloride is used as catalyst to synthesize vinyl chloride from acetylene and hydrogen chloride.