A wide range of catalysts, What are the catalysts?
Catalyst There are many types of catalysts. What are the catalysts? Anyone who has studied chemistry knows the chemical term catalyst. Catalyst is a chemical substance often used in chemical experiments. It can change the chemical reaction rate of reactants without changing the chemical equilibrium. .What are the catalysts?
What are the catalysts?
There are many types of catalysts, which can be divided into liquid catalysts and solid catalysts according to their states; they are divided into homogeneous catalysts and heterogeneous catalysts according to the phase state of the reaction system. Homogeneous catalysts include acid, alkali, Soluble transition metal compounds and peroxide catalysts.
Heterogeneous catalysts include solid acid catalysts, organic base catalysts, metal catalysts, metal oxide catalysts, complex catalysts, rare earth catalysts, molecular sieve catalysts, biocatalysts, nanocatalysts, etc.; according to Reaction types are further divided into catalysts such as polymerization, polycondensation, esterification, acetalization, hydrogenation, dehydrogenation, oxidation, reduction, alkylation, and isomerization; they are also divided into main catalysts and cocatalysts according to their effect.
Homogeneous Catalysis
The reaction in which the catalyst and reactants are in the same phase without phase boundaries is called homogeneous catalysis. A catalyst that can play a homogeneous catalytic role is a homogeneous catalyst.
Homogeneous catalysts include liquid acids, base catalysts, solid acid and base catalysts, and soluble transition metal compounds(salts classes and complexes), etc. Homogeneous catalysts function independently as molecules or ions, have uniform active centers, and have high activity and selectivity.
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®More products
ZF-10: High-efficiency and low-odor foaming catalyst, typically used in the preparation of low-odor polyurethane foam products
ZR-50: Low-odor gel catalyst that provides excellent balance and can be used in polyurethane molded high-resilience foam
Z-131: Reactive low-odor gel amine catalyst compound
Z-130: low-odor gel catalyst, balanced gel/foaming
ZR-70: Low odor catalyst for packaging foam and molded foam on vinyl skins. Good balance of foaming and gelling
ZR-40 (pentamethyldipropylenediamine): Particularly effective for cold molded high-resilience foams, low-odor gel and foaming catalyst with good balance
LE-310: Low odor reactive gel catalyst applied to large sponges, new lowVOC amine gel catalyst, amine content exceeds 95%
LE-530: Reactive gel catalyst, used in various polyurethane foam products
DPA: Low-odor gel catalyst, outstanding balance and versatility provide good fluidity
TAP 1-methyl-4-(2-dimethylaminoethyl)piperazine: Excellent trimerization catalyst that can improve fluidity
DMDEE (2,2′-dimorpholindiethyl ether): Strong foaming catalyst, providing stable prepolymer system
DMAEE: low-density full-water rigid foam and low-density semi-rigid foam
BDMAEE bis-(2-dimethylaminoethyl) ether：High-efficiency foaming catalyst
BDMA (N,N-dimethylbenzylamine)：Polyurethane rigid foam catalyst, epoxy accelerator
DMEA (N,N’-dimethylethanolamine): Neutralizes acids in some rigid foam systems,
PMDETA (pentamethyldiethylenetriamine): Particularly effective for HCFC/water foamed hard foam, similar to PC5
