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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

Maleic anhydride-1-octadecene copolymer

CAS No: 25266-02-8

Formula: (C18H36.C4H2O3)x

Categories: Catalyst and Auxiliary > Light Stabilizer

Release coatings, anti-corrosive, thickening agent, chelant/surfactant and cross-linker for epoxy or alcohol functional polymers.More

(+)-N,N-BIS[(1S)-1-PHENYLETHYL]-DINAPHTHO[2,1-D:1',2'-F][1,3,2]DIOXAPHOSPHEPIN-4-AMINE,(11BR)

CAS No: 380230-02-4

Formula: C36H30NO2P

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

INDENYLZIRCONIUM(IV)TRICHLORIDE97

CAS No: 82161-76-0

Formula: C9H7Cl3Zr

Categories: Catalyst and Auxiliary > Polymer

Polyethylene glycol bis(3-aminopropyl) ether

CAS No: 34901-14-9

Formula: (C2H4O)nC6H16N2O

Categories: Catalyst and Auxiliary > Polyethylene Glycol Derivatives

light yellow powderMore

DITRIDECYL PHTHALATE

CAS No: 75359-31-8

Formula: C34H58O4

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

LiquidMore

Tris(acetonitrile)pentamethylcyclopentadienylruthenium(I) trifluoromethanesulfonate

CAS No: 113860-02-9

Categories: Catalyst and Auxiliary > Polymer

Methoxypolyethylene glycol maleimide

CAS No: 99126-64-4

Formula: (C2H4O)nC7H9NO3

Categories: Catalyst and Auxiliary > Polyethylene Glycol Derivatives

In the site-specific modification of sulfhydryl groups of protein and polypeptide drugs, the most commonly used activated PEG is maleimido polyethylene glycol monomethyl ether (mPEG-MAL). To avoid cross-linking and agglomeration during the modification process, monomethoxy polyethylene glycol (mPEG-OH) is usually used as the synthetic raw material of the modifier.More

Resin acids, zinc salts

CAS No: 9010-69-9

Categories: Catalyst and Auxiliary > Viscosity Controlling

Powder, clear amber lumps, or yellowish liquid. May be acidic, basic, or neutral; soluble in some organic solvents (ether, amyl alcohol). Combustible.More

2,5-Furandione, polymer with 2-methyl-1-propene, sodium salt

CAS No: 39612-00-5

Formula: (C4H8.C4H2O3)x.xNa

Categories: Catalyst and Auxiliary > Polymer

Superabsorbent fiber. Amount of aqueous fluid absorbed decreases with increasing salt content. Stable up to 250°CMore

619 Catalyst and Auxiliary Suppliers

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BIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)(1,5-CYCLOOCTADIENE)RUTHENIUM (II)

CAS No: 329735-79-7

Formula: C30H50O4Ru 4*

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Ruthenium precursor for MOCVD. Air stable, readily sublimable organometallic complex. More

Silver behenate

CAS No: 2489-05-6

Formula: C22H44O2.Ag

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

White PowderMore

(S)-1-{(R)-2-[DI(2-FURYL)PHOSPHINO]FERROCENYL}ETHYLBIS(2-METHYLPHENYL)PHOSPHINE

CAS No: 849924-74-9

Formula: C29H27O2P2.C5H5.Fe

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

SolidMore

Divinylbenzene-ethylvinylbenzene-styrene copolymer

CAS No: 9052-95-3

Formula: (C10H12.C10H10.C8H8)x

Categories: Catalyst and Auxiliary > Polymer

[TRIS(DIMETHYLPHENYLPHOSPHINE)](2,5-NORBORNADIENE)RHODIUM(I)HEXAFLUOROPHOSPHATE

CAS No: 32761-50-5

Formula: C31H41F6P4Rh4*

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Bis[(1,2-η)-cyclooctene](2,4-pentanedionato-κO2,κO4)rhodium

CAS No: 34767-55-0

Formula: C21H35O2Rh

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Poly(oxy-1,2-ethanediyl), α-[3-(trimethoxysilyl)propyl]-ω-hydroxy-

CAS No: 98358-37-3

Formula: (C2H4O)nC6H16O4Si

Categories: Catalyst and Auxiliary > Polyethylene Glycol Derivatives

Ferrocene, 1-[(1S)-1-[bis(3,5-dimethylphenyl)phosphino]ethyl]-2-(di-1-naphthalenylphosphino)-, (2S)-

CAS No: 851308-41-3

Formula: C48H44FeP2

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Fatty acids, tall-oil, Bu esters

CAS No: 67762-63-4

Formula:

Categories: Catalyst and Auxiliary > Plastic Rubber Chemicals

LiquidMore

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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