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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.

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Sourcing catalyst intermediates can be complex, but ECHEMI makes it simple. Connect with 313 trusted manufacturers and 306 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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1190 Catalyst and Auxiliary items

Tantalum pentachloride

CAS No: 7721-01-9

Formula: Cl5Ta

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Pale-yellow, crystalline powder; highly reactive. Decomposed by moist air. Soluble in alcohol and potassium hydroxide solution. Keep well stoppered.More

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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Amberlyst 15

CAS No: 9037-24-5

Categories: Catalyst and Auxiliary > Polymer

Amberlyst 15 is a robust and highly effective cation exchange resin that is crafted from the polymerization of sulfonated polystyrene. This particular resin is renowned for its exceptional ion exchange capabilities, which allow it to efficiently swap out cations in various chemical processes. Its strong acidic nature, derived from the sulfonic acid functional groups attached to the polystyrene backbone, makes it particularly adept at handling tasks that require the removal or replacement of positively charged ions. One of the standout features of Amberlyst 15 is its remarkable stability, which is evident across a wide spectrum of environmental conditions. It maintains its integrity and effectiveness whether subjected to varying temperatures or pH levels. This resilience means that it can be reliably used in both acidic and basic conditions, as well as in processes that involve significant temperature fluctuations. Such versatility makes Amberlyst 15 a valuable asset in numerous industrial applications, including chemical synthesis, water treatment, and the production of pharmaceuticals and food products. Furthermore, the high exchange capacity of Amberlyst 15 ensures that it can handle large volumes of ions without a significant decrease in performance. This efficiency translates to fewer instances of resin replacement and less downtime for industrial processes, thereby enhancing overall productivity and cost-effectiveness. The resin's durability and consistent performance make it a preferred choice for many chemical engineers and scientists who require a dependable ion exchange medium for their applications.More

Carbonylchlorobis(triphenylphosphine)iridium

CAS No: 14871-41-1

Formula: C37H30ClIrOP2

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

GREEN FINE CRYSTALLINE POWDERMore

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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

Ruthenium iodide (RuI3)

CAS No: 13896-65-6

Formula: I3Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Poly(DL-lactide)

CAS No: 26680-10-4

Formula: (C6H8O4)x

Categories: Catalyst and Auxiliary > Polymer

Poly(DL-lactic acid) is a glassy material, occurring as white to golden-yellow pellets or granules.More

Ruthenium nitrosyl nitrate

CAS No: 34513-98-9

Formula: N4O10Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

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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