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Home > Catalyst and Auxiliary
According to the catalyst definition by the International Union of Pure Chemistry and Applied Chemistry (IUPAC) in 1981, a catalyst is a substance that alters the reaction rate without affecting the Gibbs free energy of the overall standard reaction. Catalysts span diverse types: liquid and solid catalysts based on state, and homogeneous versus heterogeneous catalysts based on phase state within the reaction system. In industrial processes, auxiliaries like centrifuge catalysts enhance production processes, improve product quality, or enable specific application performance. The array of auxiliaries definition is extensive, with varied performance - optimal effects stem from proper usage. ECHEMI's "Catalyst and Auxiliary" section predominantly supplies raw materials for Catalyst and Auxiliary.

Catalyst Company

Sourcing catalyst intermediates can be complex, but ECHEMI makes it simple. Connect with 318 trusted manufacturers and 319 verified distributors offering a wide range of catalysts, including auxiliaries, centrifuge catalysts, and specialty intermediates for chemical production, pharmaceuticals, and industrial applications. Find high-quality catalysts and get competitive quotes from reliable suppliers.
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1195 Catalyst and Auxiliary items

DICHLORO[(R)-(+)-2,2'-BIS(DIPHENYLPHOSPHINO)-1,1'-BINAPHTHYL]RUTHENIUM (II)

CAS No: 132071-87-5

Formula: C44H32Cl2P2Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

(S)-(-)-6,6'-Dibromo-1,1'-bi-2-naphthol

CAS No: 80655-81-8

Formula: C20H12Br2O2

Categories: Catalyst and Auxiliary > Polymer

white to light yellow crystal powdeMore

PLATINUM(IV) OXIDE HYDRATE

CAS No: 12137-21-2

Formula: H2O3Pt

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Transplatin

CAS No: 14913-33-8

Formula: Cl2H6N2Pt

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Yellow Powder or CrystalChEBI: A diamminedichloroplatinum compound in which the two ammine ligands and two chloro ligands are oriented in a trans planar configuration around the central platinum ion. Unlike its cis-isomer, cisplatin, it does not exhibit any useful pharmacological effect and is toxic.More

2-(2H-Benzotriazol-2-yl)-6-(1-methyl-1-phenylethyl)-4-(1,1,3,3-tetramethylbutyl)phenol

CAS No: 73936-91-1

Formula: C29H35N3O

Categories: Catalyst and Auxiliary > UV Absorbers

UV absorber-928 has broad absorption properties which can effectively protect coating and other photosensitive materials. UV absorber-928 has high solubility, high temperature resistant and good environmental durability and so on. UV absorber-928 is suitable for high performance coatings, especially suitable for powder coating and industrial and automotive coatings. UV absorber-928 can be enhanced when used in combination with a HALS stabilizer such as UV-292 or UV-123.
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637 Catalyst and Auxiliary Suppliers

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Carbonylchlorobis(triphenylphosphine)iridium

CAS No: 14871-41-1

Formula: C37H30ClIrOP2

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

GREEN FINE CRYSTALLINE POWDERMore

Diethyl P-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]phosphonate

CAS No: 976-56-7

Formula: C19H33O4P

Categories: Catalyst and Auxiliary > Antioxidants

1. Antioxidant 1222 (976-56-7) is a phosphorus-containing hindered phenol antioxidant with good resistance to extraction. Especially suitable for polyester anti-aging, generally added before polycondensation, because it is also a polycondensation catalyst for polyester, used to eliminate the currently toxic catalyst antimony trioxide, because this product does not reduce the rate of reaction, not with the catalyst The residue reacts to keep the polyester melt free from thermal oxidation degradatMore

Frequently Asked Questions

How to choose the right catalyst for your application?

When selecting a catalyst, it is important to consider the type of reaction, operating temperature, pressure, solvents involved, and desired selectivity. Other key factors include catalyst lifetime, regeneration ability, and compatibility with your process. On ECHEMI, you can browse a wide range of catalyst and auxiliary products and compare specifications from multiple global suppliers to find the best option for your needs.

What is a catalyst?

Synonyms for catalyst include accelerator, promoter, stimulant, etc. A catalyst is a substance that speeds up a chemical reaction without undergoing any permanent changes. According to the catalyst definition, it doesn't alter the thermodynamics or the catalyst meaning of the reaction, but it lowers the activation energy required for the reaction to occur. Basically, a catalyst facilitates the reaction process and increases the conversion rate without being consumed in the reaction itself. It may exist in a variety of forms, including enzymes, metals, or complex compounds.

How does a catalyst work?

The function of a catalyst is to provide an alternative pathway for a chemical reaction to take place. It reduces the activation energy required for the reaction to begin, thus speeding up the rate of the reaction. The catalyst apex is the point at which the catalyst's effect on the reaction reaches maximum efficiency. It diminishes existing chemical bonds or establishes intermediary structures, so simplifying the reaction process, consequently expediting the production of substances. This mechanism, often utilized by catalyst companies, leads to accelerated product formation.

Are enzymes catalysts?

Yes, according to the catalyst definition, enzymes are biological catalysts. Enzymes, considered protein-based catalyst synonym, facilitate biochemical reactions within living organisms. Within defined temperature and pH parameters, enzymes function as exceedingly efficient catalysts, diminishing the activation energy necessary for reactions to occur. These auxiliaries, when integrated into biological systems, demonstrate specificity and selectivity in catalyzing particular reactions, rendering them pivotal as key catalysts across diverse biological processes.

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