Catalytic Carrier Activated Carbon

Catalytic carrier activated carbon refers to the catalyst supported on activated carbon in chemical synthesis. The carrier activated carbon only plays the role of a carrier and is one of the components of the supported catalyst. The catalytic active components are supported on the surface of the carrier. The carrier is mainly used to support the active components so that the catalyst has specific physical properties, and the carrier itself generally does not have catalytic activity. Most carriers are products in the catalyst industry, and commonly used ones are alumina carriers, silica gel carriers, activated carbon carriers and certain natural products such as pumice and diatomaceous earth. The “active component name-carrier name” is often used to indicate the composition of the supported catalyst, such as nickel-alumina catalyst for hydrogenation and vanadium oxide-diatomaceous earth catalyst for oxidation.

Product characteristics:

Activated carbon as a carrier for precious metal catalysts:

Precious metal catalysts are suitable for use in the pharmaceutical and chemical industries, as catalyst carriers (palladium, platinum, rhodium) in the petrochemical industry, and in the lightening process of terephthalic acid. For example, in the synthesis of timolol, flupiperidin, and toluene diisocyanate, in the hydrogenation and disproportionation of caprolactam refined rosin, activated carbon-supported palladium (palladium carbon) is used as a catalyst. In the production of purified terephthalic acid, activated carbon-supported palladium catalysts are also used when terephthalic acid is hydrogenated and refined to remove p-carboxybenzoic acid.

Activated carbon as a catalyst and catalyst carrier One of the important uses of activated carbon is as a catalyst carrier and co-catalyst, and it can also be used directly as a catalyst.

Product application:

Isomerization Use nickel-carbon catalysts to isomerize vegetable oils (such as cottonseed oil, linseed oil, rapeseed oil, etc.) from non-conjugated oils to conjugated forms.

Hydrogenation, dehydrogenation and dehydrogenation aromatization, cyclization and isomerization: activated carbon with palladium or platinum as catalyst can play this catalytic role.

Low-pressure polymerization of olefins Using activated carbon containing nickel, cobalt or their oxides as catalyst can polymerize olefins.

Synthetic fiber In the production of vinylon, activated carbon containing zinc acetate is used as a catalyst to synthesize vinyl acetate from acetylene and acetic acid.

Rosin reprocessing Use activated carbon containing palladium as a catalyst to produce disproportionated rosin and hydrogenated rosin, etc.

Synthetic vinyl chloride Using activated carbon containing mercuric dichloride as a catalyst, acetylene and hydrogen chloride synthesize vinyl chloride.

In terms of direct use of activated carbon as a catalyst, such as:

Manufacture of hydrogen peroxide Use a porous tube covered with activated carbon as a cathode to react the hydrogen released from the cathode with the oxygen pressed in to generate hydrogen peroxide.

Convert hydrogen sulfide into elemental sulfur Activated carbon can adsorb hydrogen sulfide and oxidize it into elemental sulfur to remove hydrogen sulfide from the gas.

Activated carbon catalyzes the removal of HCl from tetrachloroethane to prepare trichloroethylene, and activated carbon catalysts for methane cracking to produce hydrogen

Dechlorination of water Activated carbon can play two roles: adsorption and catalysis, removing chlorine from water.

Used in the production of phosgene, cyanuric chloride, ethyl chloride, halogenated sulfonyl, and pesticide intermediates. Due to the catalytic effect of activated carbon, chlorine and carbon monoxide can react to produce phosgene; sulfur dioxide and chlorine can react to produce sulfuryl chloride; chlorine and hydrogen can react to produce hydrogen chloride; bromine and water vapor can react to produce hydrobromic acid; ferrous sulfate can oxidize ferric sulfate; and it can serve as a catalyst carrier for cyanuric chloride polymer reactions