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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 314 trusted manufacturers and 302 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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1185 Catalyst and Auxiliary items

Trimellitic acid

CAS No: 528-44-9

Formula: C9H6O6

Categories: Catalyst and Auxiliary > Coupling Agent

Colorless crystals.Partially soluble in DMF and alcohol; insoluble in benzene and carbon disulfide; slightly soluble in water.More

2,2′-Thiobis(4-methyl-6-tert-butylphenol)

CAS No: 90-66-4

Formula: C22H30O2S

Categories: Catalyst and Auxiliary > Antioxidants

Used as an antioxidant for rubber and polymer materials, mainly used in polyethylene, polypropylene, nitrile rubber, butyl rubber and natural rubberMore

Poly(methacrylic acid)

CAS No: 25087-26-7

Formula: (C4H6O2)x

Categories: Catalyst and Auxiliary > Film Forming

ChEBI: An acrylic macromolecule, composed of repeating 2-methylpropanoic acid units.More

Terpenes, polymers

CAS No: 9003-74-1

Categories: Catalyst and Auxiliary > Polymer

Used for adhesives, rubber, paint, ink, hot melt adhesive, etc.More

616 Catalyst and Auxiliary Suppliers

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Bis(diphenylphosphino)binaphthyl palladium chlorid

CAS No: 115826-95-4

Formula: C44H32Cl2P2Pd

Categories: Catalyst and Auxiliary > Polymer

Acrylonitrile-styrene copolymer

CAS No: 9003-54-7

Formula: (C8H8.C3H3N)x

Categories: Catalyst and Auxiliary > Polymer

clear white pelletsMore

1,3-Isobenzofurandione, 5,5′-carbonylbis-, polymer with 1(or 3)-(4-aminophenyl)-2,3-dihydro-1,3,3(or 1,1,3)-trimethyl-1H-inden-5-amine

CAS No: 62929-02-6

Formula: (C18H22N2.C17H6O7)x

Categories: Catalyst and Auxiliary > Polymer

Polyimides (PI, also known by alternative brand names: Pyralin Apical, Kapton, and Kaptrex) are polymers made of imide monomers (two carbonyl groups bonded to nitrogen). It has a density of 1430 kg/m3, Young’s modulus 3200 MPa, tensile strength (75–90) MPa, glass transition temperature > 400℃, thermal conductivity of 0.53 W/(m K), and a low relative dielectric constant of 2.9. Polyimides have applications similar to BCBs and also find applications as a low dielectric constant material in high-fMore

Poly(4-styrenesulfonic acid)

CAS No: 28210-41-5

Formula: (C8H8O3S)x

Categories: Catalyst and Auxiliary > Polymer

Soluble in: lower alcohols, glycolsMore

Trimethyl citrate

CAS No: 1587-20-8

Formula: C9H14O7

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

It can be used as the main burning agent for color flame candles, and its melting point and flammability fully meet the requirements of candle products. It is a stable intermediate in the synthesis of medicine and pesticide. It is the main raw material for the production of citrazine acid. It is the main raw material for synthetic hot melt adhesives. It can be used as a blowing agent for methyl methacrylate polymers, a stabilizer for acrylamide, an initiator for polyamide adhesives, and a plastiMore

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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