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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 318 trusted manufacturers and 316 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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1191 Catalyst and Auxiliary items

Polyethylene glycol 2-ethylhexyl ether

CAS No: 26468-86-0

Formula: (C2H4O)nC8H18O

Categories: Catalyst and Auxiliary > Cleansing

A low-foam, non-ionic surfactant used to improve the brightness of the coating, the cloud point temperature of 1% aqueous solution is 45C, RALUFON EN 16-80 and anionic surfactants such as RALUFON NAPE 14-90 or RALUFON EA 15-90 is used as an auxiliary brightener in combination with acidic zinc plating. Due to the low foam performance of RALUFON EN 16-80, it is suitable for use in air agitation tanks.More

CHLORO(CYCLOPENTADIENYL)[BIS(DIPHENYLPHOSPHINO)METHANE]RUTHENIUM (II)

CAS No: 71397-33-6

Formula: C30H27ClP2Ru 5*

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Chloro(cyclopentadienyl)[bis(diphenylphosphino)Methane]rutheniuM(II) is a useful catalyst for the anti-Markovnikov hydration of terminal alkynes. More

Bis(methylcyclopentadienyl)titanium dichloride

CAS No: 1282-40-2

Formula: C12H14Cl2Ti

Categories: Catalyst and Auxiliary > Polymer

Chromium, bis(η6-benzene)-

CAS No: 1271-54-1

Formula: C12H12Cr

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

dark green to black crystals or crystalline powderMore

3,6,9,12,15,18-Hexaoxaoctacosan-1-ol

CAS No: 5168-89-8

Formula: C22H46O7

Categories: Catalyst and Auxiliary > Emulsifying Agent

detergent: A substance added towater to improve its cleaning properties.Although water is a powerfulsolvent for many compounds, it willnot dissolve grease and natural oils.Detergents are compounds that causesuch nonpolar substances to go intosolution in water. Soap is the originalexample, owing its action tothe presence of ions formed fromlong-chain fatty acids (e.g. theoctadecanoate (stearate) ion,CH
3
(CH
2
)
16
COO
-
). These have twoparts: a nonpolar part (thMore

DICHLOROBIS(2-(DIPHENYLPHOSPHINO)ETHYLA&

CAS No: 506417-41-0

Formula: 2C14H16NP.Cl2Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Tris[2-(diphenylphosphino)ethyl]phosphine

CAS No: 23582-03-8

Formula: C42H42P4

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

white to light yellow crystal powdeMore

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CHLOROCARBONYL GOLD (I)

CAS No: 50960-82-2

Formula: CAuClO

Categories: Catalyst and Auxiliary > Polymer

a yellowish or grayish white powder(s); sensitive to atmospheric oxygen [STR93]More

TRIS(2,2,6,6-TETRAMETHYL-3,5-HEPTANEDIONATO)YTTRIUM(III)

CAS No: 15632-39-0

Formula:

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

HRcure-MPBZ

CAS No: 86428-83-3

Formula:

Categories: Catalyst and Auxiliary > Fluorescent Brightener

Carbonyl(2,2,2-trifluoroacetato-κO)(2,2,2-trifluoroacetato-κO,κO′)bis(triphenylphosphine)ruthenium

CAS No: 38596-61-1

Formula: C41H30F6O5P2Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Dinonyldiphenylamine

CAS No: 36878-20-3

Formula: C30H47N

Categories: Catalyst and Auxiliary > Antioxidants

Di-μ-chlorodichlorobis[(1,2,3,6,7,8-η)-2,7-dimethyl-2,6-octadiene-1,8-diyl]diruthenium

CAS No: 34801-97-3

Formula: C20H32Cl4Ru2

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

BIS(TRICYCLOHEXYLPHOSPHINE)[(PHENYLTHIO)METHYLENE]RUTHENIUM (IV) DICHLORIDE

CAS No: 219770-99-7

Formula: C43H72Cl2P2RuS

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

1,3-Bis(2,6-di-isopropylphenyl)imidazol-2-ylidenegold(I)chloride,95%

CAS No: 852445-83-1

Formula: C27H36AuClN2

Categories: Catalyst and Auxiliary > Polymer

Ir[dF(Me)ppy]2(dtbbpy)PF6

CAS No: 1335047-34-1

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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