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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

Trost Ligand

CAS No: 138517-61-0

Formula: C44H40N2O2P2

Categories: Catalyst and Auxiliary > Polymer

Poly(N-isopropylacrylamide)

CAS No: 25189-55-3

Formula: (C6H11NO)x

Categories: Catalyst and Auxiliary > Polymer

mp 96°C phase transitions at 32°C to insoluble phaseMore

BIS(TRIPHENYLPHOSPHINE)COPPER (I) NITRATE

CAS No: 106678-35-7

Formula: C36H30CuNO3P2

Categories: Catalyst and Auxiliary > Polymer

619 Catalyst and Auxiliary Suppliers

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(1S,1′S)-1,1′-(1,2-Ethanediyl)bis[1-(2-methoxyphenyl)-1-phenylphosphine]

CAS No: 97858-62-3

Formula: C28H28O2P2

Categories: Catalyst and Auxiliary > Polymer

Rhodium DIPAMP catalysts have shown high activity and enantioselectivity in the asymmetric hydrogenation of enamides, enol acetates and olefins. More

Poly(2-ethyl-2-oxazoline)

CAS No: 25805-17-8

Formula: (C5H9NO)x

Categories: Catalyst and Auxiliary > Film Forming

This Poly(2-ethyl-2-oxazoline) polymer is amorphous and water soluble with good temperature stability. Jordan and coworkers showed biocompatibility, no accumulation in tissue, and rapid clearance from the bloodstream1. End-group modified poly(2-ethyl-2-oxazoline)s have been conjugated to peptides2, and were shown as versatile alternatives to poly(ethylene glycol) (PEG) for both protein and small drug conjugation3.Potential substitute for poly(vinyl alcohol) and poly(vinyl pyrrolidone). Adhesion More

Silver tosylate

CAS No: 16836-95-6

Formula: C7H8O3S.Ag

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

BIS(TERT-BUTYLIMINO)BIS(DIMETHYLAMINO)&

CAS No: 406462-43-9

Formula: C12H30N4W

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

Polyethylene Glycol Diamine

CAS No: 24991-53-5

Formula: (C2H4O)nC4H12N2O

Categories: Catalyst and Auxiliary > Polyethylene Glycol Derivatives

White to slightly yellowish powderMore

Acrylamide-acrylic acid copolymer

CAS No: 9003-06-9

Formula: (C3H5NO.C3H4O2)x

Categories: Catalyst and Auxiliary > Polymer

Used as retention aid in the papermaking process. It has obvious effect on titanium dioxide. The highest retention rate is 0.05%~0.2%.More

Ethylene-glycidyl methacrylate copolymer

CAS No: 26061-90-5

Formula: (C7H10O3.C2H4)x

Categories: Catalyst and Auxiliary > Polymer

Cross-linkable coatings and adhesion promoter.More

11-Aminoundecanoic acid homopolymer, SRU

CAS No: 25035-04-5

Formula: (C11H21NO)n

Categories: Catalyst and Auxiliary > Viscosity Controlling

PHYSICAL DESCRIPTION: White crystalline solid or powder. (NTP, 1992)More

4,6-Diphenyl-1,3,5-triazin-2(1H)-one

CAS No: 1917-44-8

Formula: C15H11N3O

Categories: Catalyst and Auxiliary > UV Absorbers

Diacetato[(S)-(-)-5,5'-bis(diphenylphosphino)-4,4'-bi-1,3-benzodioxole]ruthenium(II)

CAS No: 373650-12-5

Formula: C38H28O4P2.C4H6O4Ru

Categories: Catalyst and Auxiliary > Precious Metal Catalysts

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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