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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

((-)-1,2-Bis(2R,5R-2,5-dimethylphospholano)benzene)(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate

CAS No: 210057-23-1

Formula: C26H40P2Rh.BF4

Categories: Catalyst and Auxiliary > Polymer

red or red-brown crystalline powderMore

CHLORO(INDENYL)BIS(TRIPHENYLPHOSPHINE)RUTHENIUM (II)

CAS No: 99897-61-7

Formula: C45H37ClP2Ru 5*

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Catalyst for the alkylation of carbonyl compounds. 7 Catalyst precursor for living radical polymerization. 8 Catalyst for redox isomerization of propynol.More

Bis(indenyl)zirconium dichloride

CAS No: 12148-49-1

Formula: C18H14Cl2Zr

Categories: Catalyst and Auxiliary > Polymer

yellow to brown powderMore

Methyl phenyl polysiloxane

CAS No: 9005-12-3

Formula: (C7H8OSi)n

Categories: Catalyst and Auxiliary > Skin Conditioning

Butyryl trihexyl citrate

CAS No: 82469-79-2

Formula: C28H50O8

Categories: Catalyst and Auxiliary > Plasticiser

Soybean oil, Me ester

CAS No: 67784-80-9

Categories: Catalyst and Auxiliary > Petrochemical

Chloro(1,5-cyclooctadiene)methylpalladium(II) 97%

CAS No: 63936-85-6

Formula: C9H14ClPd+

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

619 Catalyst and Auxiliary Suppliers

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Carbonic dichloride, polymer with 4,4′-(1-methylethylidene)bis[2,6-dibromophenol] and 4,4′-(1-methylethylidene)bis[phenol]

CAS No: 32844-27-2

Formula: (C15H16O2.C15H12Br4O2.CCl2O)x

Categories: Catalyst and Auxiliary > Polymer

  • buy Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

    Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

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  • buy carbonyl dichloride,2,6-dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl]phenol,4-[2-(4-hydroxyphenyl)propan-2-yl]phenol

    carbonyl dichloride,2,6-dibromo-4-[2-(3,5-dibromo-4-hydroxyphenyl)propan-2-yl]phenol,4-[2-(4-hydroxyphenyl)propan-2-yl]phenol

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  • buy Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

    Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

    Inquiry
  • buy Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

    Carbonic dichloride, polymer with 4,4-(1-methylethylidene)bis2,6-dibromophenol and 4,4-(1-methylethylidene)bisphenol

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Nylon 6/66

CAS No: 24993-04-2

Formula: (C6H16N2.C6H11NO.C6H10O4)x

Categories: Catalyst and Auxiliary > Polymer

Nylon 6/66 is a copolymer made from caprolactam (used to make Nylon 6) and a condensate of adipic acid and hexamethylenediamine (used to make Nylon 66). Nylon 6/66 combines the advantages of Nylon 6 and Nylon 66, with excellent mechanical properties, wear resistance and chemical resistance. It is a white to pale yellow solid. The density is about 1.12-1.14 g/cm³, the melting point is about 210-220°C, it is insoluble in water, soluble in strong acids (such as formic acid) and some organic solvents.More

2-(Dicyclohexylphosphino)-2'-methoxybiphenyl

CAS No: 255835-82-6

Formula: C25H33OP

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

suzuki reactionMore

DICHLORO-[1,3-BIS(DIISOPROPYLPHENYL)-2-IMIDAZOLIDINYLIDENE]-(3-CHLOROPYRIDYL)PALLADIUM(II)

CAS No: 927706-57-8

Formula: PEPPSI-SIPr

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Yellow crystalMore

1,3,5-Triazine-2,4,6-triamine, polymer with formaldehyde, butylated

CAS No: 68002-25-5

Formula: (C3H6N6.CH2O)x

Categories: Catalyst and Auxiliary > Polymer

It can be used as the main raw material of high-grade coatings and high-grade inks, and can also be used in the finishing of printing glazing, textile cotton, chemical fiber and various blended fabrics.More

C.I. Fluorescent Brightener 90

CAS No: 3426-43-5

Formula: C34H30N10O8S2.2Na

Categories: Catalyst and Auxiliary > Fluorescent Brightener

AMBERLITE(R)IRA-67

CAS No: 80747-90-6

Formula:

Categories: Catalyst and Auxiliary > Polymer

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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