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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 314 trusted manufacturers and 309 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

2,2′-(1,2-Ethenediyl)bis[5-[[4-[bis(2-hydroxyethyl)amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]benzenesulfonic acid

CAS No: 4404-43-7

Formula: C40H44N12O10S2

Categories: Catalyst and Auxiliary > Fluorescent Brightener

ChEBI: An organosulfonic acid comprising stilbene having 4-anilino-6-[bis(2-hydroxyethyl)amino]-1,3,5-triazin-2-yl}amino groups at the 4 and 4'-positions and sulfo groups at the 2- and 2'-positions.More

623 Catalyst and Auxiliary Suppliers

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Chromium hexacarbonyl

CAS No: 13007-92-6

Formula: C6CrO6

Categories: Catalyst and Auxiliary > Petrochemical

white crystals or powder Chromium carbonyl is a colorless crystalline substance which sinters (forms a coherent mass without melting) @ 90°C.White crystalline or granular solid. Sublimes at room temperature. Burns with a luminous flame.White orthogonal crystal; density 1.77 g/cm3; sublimes at ordinary temperatures; vapor pressure 1 torr at 48°C; decomposes at 130°C; insoluble in water and alcohols; soluble in ether, chloroform and methylene chloride.More

Ethoxylated trimethylolpropane

CAS No: 50586-59-9

Formula: (C2H4O)n(C2H4O)n(C2H4O)nC6H14O3

Categories: Catalyst and Auxiliary > Polymer

Diisooctyl phthalate

CAS No: 27554-26-3

Formula: C24H38O4

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

The empirical formula of diisooctyl phthalate (DIOP) is C24H38O4. The structural formula of DIOP varies because the iso-alcohols used in the manufacture contain several isomers. DIOP is insoluble in water, but it is soluble in organic solvents.More

4-tert-Butyl-2-nitrophenol

CAS No: 3279-07-0

Formula: C10H13NO3

Categories: Catalyst and Auxiliary > Fluorescent Brightener

Yellow low melting solidMore

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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