What kind of catalyst carrier can support a metal catalyst?
What kind of catalyst carrier can support a metal catalyst?
Zeolites, aluminas, and silicas are already known as catalyst carriers that can carry precious metal catalysts. However, in fact, activated carbon is also a very good catalyst carrier and has a high advantage over zeolite, alumina, and silica.
Among the activated carbons for various uses of Osaka Gas Chemical, brands with particularly high functionality are used in the chemical synthesis field such as fine chemicals, pharmaceuticals, and aglicultural chemicals pesticides as catalyst carrier activated carbons that can support precious metal catalysts.
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Superiority of activated carbon as a reaction catalyst carrier
The advantage of activated carbon as a noble metal-supported catalyst carrier is that the supported expensive noble metals can be easily separated and recovered. Catalyst carriers such as zeolite, alumina, and silica have the problem that it is difficult to separate and recover expensive precious metals that are carried (= adsorbed). However, activated carbon can be separated and recovered. Osaka Gas Chemicals' activated carbon for catalyst supports has a very small amount of ash at burning. Ash hinders collection of precious metal.
Powder coal
Pellet charcoal
Activated carbon for precious metal supported catalyst supports is required to be highly pure. If the amount of impurities inhibiting the catalytic reaction is low, it can be a catalyst with high reactivity. Furthermore, we will adjust the shape, particle size, microstructure (pore distribution) of activated carbon according to the usage conditions of each user and provide various grade products.
Adjustments of pore size and particle size depending on purposes and applications
<Pore adjustment example>
<Example of particle size adjustment>
The powdered activated carbon "SHIRASAGI FAC - 10" manufactured by Osaka Gas Chemicals has high filtration performance as well as high purity. Granular activated carbon "SHIRASAGI C2c" and "SHIRASAGI C2x" with hardness to withstand long-term use are grade products with improved attrition loss. Outline of activated carbon for catalyst / catalyst support of Osaka Gas Chemicals is summarized in the table below.
Outline of activated carbon for catalyst / catalyst support of Osaka Gas Chemicals
Osaka Gas Chemical's activated carbon for catalyst / catalyst support are made from wood and coconut shells, and clear the high purity required for catalyst carriers and activated carbons for catalysts.
Osaka Gas Chemical's activated carbon for catalyst / catalyst support come in various grades depending on the particle size distribution, attribution loss, and crush strength. For industrial use, there are pellet activated carbon C2x series with uniform particle size and excellent hardness, crushed activated carbon C2 series with an emphasis on cost performance, and powdered activated carbon FAC-10 for fine chemicals.
FAC-10 for fine chemicals is a high-spec grade with optimally sized pores for supporting metals in the reaction, providing high efficiency in the separation process. It is also superior in mesoporousness. (A material having mesopores, which is between micropores and macropores, tends to cause a chemical reaction using the inside of the pores.)
【Practical example】 ・Hydrogenation reactions of olefins, carbonyl compounds, nitro groups, aromatic rings, etc, which are indispensable for fine chemicals, pharmaceauticals, aglicultural chemicals pesticides etc. ・As a carrier of metal catalyst of the coupling reaction essential for the production of the bond of carbon and carbon.
Main Items for Pharmaceuticals
The best is ★★★★★ (internal data)
Product
Typical pore size
Activation
Purify
Filtration
SHIRASAGI A
wide range
steam
★★★★
★★★
SHIRASAGI P
small
steam
★★★★★
★★★
TOKUSEI SHIRASAGI
medium / large
chemical
★★★★★
★★★★
SHIRASAGI KL
medium / large
chemical
★★★
★★★★★
SHIRASAGI LH2c
small
steam
★★★★★
★★★★★
Special grades for catalyst recovery
ANOX-1
small
steam
★★★★★
★★★★★
ANOX-2
medium / large
chemical
★★★★★
★★★★
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