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Catalyst and Auxiliary

The catalyst can change the reaction rate in the chemical reaction, and the composition and the quality of the catalyst can be kept constant after the reaction. The catalyst that accelerates the reaction is called the positive catalyst, slows down called Negative Catalyst or slow agent. It said catalyst is a positive catalyst for the general correction. This kind of catalyst in the industry, especially the organic chemical industry used more, and has great significance, Such as sulfuric acid prepared by contacting, ammonia, hydrolysis of the ester and polysaccharide, Oil Hydrogenation, etc. Commonly used catalysts are mainly metal, metal oxide and inorganic acid. If the catalyst is solid, the substance of the reaction is gas, to form a multi-phase catalytic reaction, this catalyst, sometimes called catalyst or contact agent. The catalyst is generally selective, it can only make a reaction or a certain type of reaction to speed up. But some reaction can be used for a variety of catalysts, such as the hydrogenation reaction can often be platinum, palladium, nickel, should be carefully chosen. In the catalytic reaction, the catalyst is often added cocatalyst known to enhance catalytic action of the catalyst. For example, iron is a catalyst in ammonia industry, adding a small amount of potassium and aluminum can enhance the catalytic effect of iron. The composition and weight of the catalyst and cocatalyst cannot change before and after the reaction. All of the above are inorganic catalysts. The enzyme is a protein, is very important organic catalyst.

There are many kinds of catalyst, catalyst and reaction system according to the phase of the classification, there are two types of homogeneous and heterogeneous catalysts. Heterogeneous catalysts most widely used, there are 3 kinds of gas, liquid and solid state, the variety and application of solid catalyst. The solid catalyst, which is made of metal (nickel, platinum, palladium, chromium, cobalt, titanium, vanadium, etc.) or metal oxide (copper oxide, vanadium pentoxide, lead oxide), is dispersed and deposited on the carrier in order to obtain a good dispersion effect and increase the specific surface area. The catalyst requires reliable activity, stability, selectivity, long working life, not easy to poisoning and over-burning, easy to regenerate. In order to improve the catalytic efficiency, the pure metal catalysts are made into alloy catalysts (such as nickel aluminium alloy) and composite catalysts (ZieglerNatta). The composite catalyst is composed of main catalyst and co-catalyst. In the new efficient catalysts also add other components. The production and development of high efficiency catalyst have promoted the development of polymer materials, and produced much polymer function and structure material ,which is new generation of high performance and high added value.

With the extensive application of catalyst and a number of new catalysts, we can make a lot of new chemical reactions to achieve industrialization, in order to provide an increasing number of chemical products; also can make some of the original chemical reaction conditions have been improved, in order to improve the production efficiency and product quality, make full use of resources. The important subject in the field of modern chemistry and chemical research is to select and develop more and better catalyst for the new generation. But the role of a catalyst is not beneficial to humans, such as combustion products of supersonic jet fuel as a catalyst can cause the stratosphere (10 to 50 km altitude) decomposition of ozone in the atmosphere, to the sun's ultraviolet absorption decreased, resulting in some areas of skin cancer patients increased. Is developing a new supersonic jet fuel, its combustion products will not become a catalyst,which will cause the ozone decomposition catalyst in the stratosphere.

Additives are added in the industrial and agricultural production, especially in the chemical production of some of the auxiliary chemicals, its role is to improve the production process, improve product quality and yield, or to give the product a unique application performance.

Additive are large class of important chemical in the production of auxiliary raw materials, they can give a special performance to product, improve use of finished products; and can accelerate the chemical reaction rate, improve product yield; they can save raw materials, improve processing efficiency. Additives are widely used in the chemical industry, especially organic synthesis, synthetic material processing and petroleum refining, pesticide, medicine, dye, paint and other industrial sectors. Additives can be divided into synthesized additives and processing additives. Synthetic additives are used in monomer synthesis and polymerization of a variety of auxiliary agents in resin, fiber, rubber, etc. They include catalysts, initiators, solvents, dispersants, emulsifiers, polymerization inhibitors, regulators, termination agents, etc. Processing aid refers to the auxiliary chemicals used in the manufacture of raw rubber, plastics processing, chemical fiber spinning and spinning process, including plasticizers, heat stabilizers, antioxidants, light stabilizers , flame retardants, blowing agents, lubricants, mold release agents, curing agents, accelerators, softeners, anti-scorching agents, surfactants, oils, fillers, etc. In these additives, many of them are dangerous chemicals, Such as benzoyl peroxide, azobisisobutyronitrile, hydrogen peroxide - ferrous blue, alkyl aluminum chloride, titanium and other initiators, catalysts are inflammable and explosive materials, should be required to "chemical Dangerous Goods Safety Management Regulations", for storage, transportation, operation and use.

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Structure Chemical Name CAS MF
mPEG-PFP mPEG-PFP
Palmitic acid-PEG-SC Palmitic acid-PEG-SC
Phthalimide-PEG-OH Phthalimide-PEG-OH
PLGA(5K)-PEG-Mal PLGA(5K)-PEG-Mal
PLGA(8K)-PEG-NH2 PLGA(8K)-PEG-NH2
Palladate(2-), di-μ-chlorotetrakis[P-cyclohexyl-P-(1,1-dimethylethyl)phosphinito-P]di-, hydrogen (1:2) Palladate(2-), di-μ-chlorotetrakis[P-cyclohexyl-P-(1,1-dimethylethyl)phosphinito-P]di-, hydrogen (1:2) 1051923-90-0 C40H85Cl2O4P4Pd2-
Methoxy polyethylene glycol polycaprolactone Methoxy polyethylene glycol polycaprolactone
N-(2-Hydroxypropyl)benzenesulphonamide N-(2-Hydroxypropyl)benzenesulphonamide 35325-02-1 C9H13NO3S
MA(PEG)4 MA(PEG)4
SM(PEG)4 SM(PEG)4
46 base oil 46 base oil
NHS-PEG-Silane Silane-PEG-NHS NHS-PEG-Silane Silane-PEG-NHS
PDCL PDCL
No. 68 cosmetic white oil No. 68 cosmetic white oil
Recovery of palladium materials from brine Recovery of palladium materials from brine
COOH-PEG-SH COOH-PEG-SH
(1,3-BIS-(2,4,6-TRIMETHYLPHENYL)-2-IMIDAZOLIDINYLIDENE)DICHLORO(O-ISOPROPOXYPHENYLMETHYLENE)RUTHENIUM (1,3-BIS-(2,4,6-TRIMETHYLPHENYL)-2-IMIDAZOLIDINYLIDENE)DICHLORO(O-ISOPROPOXYPHENYLMETHYLENE)RUTHENIUM 301224-40-8 C31H37Cl2N2ORu
DIHYDROGEN DICHLOROBIS(DI-T-BUTYLPHOSPHINITO-KP)PALLADATE(2-) DIHYDROGEN DICHLOROBIS(DI-T-BUTYLPHOSPHINITO-KP)PALLADATE(2-) 391683-95-7 C16H38Cl2O2P2Pd
NA NA
mPEG45-NH-Mal mPEG45-NH-Mal
DOWEX(R) 50 WX8 DOWEX(R) 50 WX8 11119-67-8 N/A
Flocculant Flocculant
RuPhos Pd G3 RuPhos Pd G3 1445085-77-7 C43H57NO5PPdS-
NCO-PEG-NCO NCO-PEG-NCO
SC-PEG-OH SC-PEG-OH
Alkyne-PEG-EP Alkyne-PEG-EP
L-Aspartic acid, homopolymer, potassium salt
L-Aspartic acid, homopolymer, potassium salt 64723-18-8 C4H5K2NO4
Fmoc-NH-(PEG)4-OH Fmoc-NH-(PEG)4-OH
mPEG-LA(mPEG-Lipoic acid) mPEG-LA(mPEG-Lipoic acid)
Iodo acetyl-PEG-Iodo acetyl Iodo acetyl-PEG-Iodo acetyl
SH-PEG-Biotin SH-PEG-Biotin
DSPE-PEG-OH DSPE-PEG-OH 892144-24-0 (C2H4O)nC42H82NO10P
Antioxidant HP136,2(3H)-Benzofuranone,5,7-bis(1,1-dimethylethyl)-3-(3,4-dimethylphenyl) Antioxidant HP136,2(3H)-Benzofuranone,5,7-bis(1,1-dimethylethyl)-3-(3,4-dimethylphenyl) 164391-52-0 C24H30O2
Amino-PEG8-Amine Amino-PEG8-Amine 82209-36-7 C18H40N2O8
TAMRA-Azide-PEG-Desthiobiotin TAMRA-Azide-PEG-Desthiobiotin
Poly(butylene terephthalate) Poly(butylene terephthalate) 26062-94-2 C12H16O6
DLPE PEG NHS DLPE PEG NHS
Stearic acid PEG NHS Stearic acid PEG NHS
Cy3 PEG NHS Cy3 PEG NHS
Progestrone PEG DSPE Progestrone PEG DSPE
Retinoic acid PEG amine Retinoic acid PEG amine
N3-PEG7-OH N3-PEG7-OH 1274892-60-2 C14H29N3O7
FMOC-NH-PEG4-NH2 FMOC-NH-PEG4-NH2
mpeg-nhs mpeg-nhs
Azido-PEG12-Amine Azido-PEG12-Amine
Antioxidant 1790 Antioxidant 1790 40601-76-1 C42H57N3O6
NH2-PEG3-OH NH2-PEG3-OH 6338-55-2 C6H15NO3
HOOCCH2CH2O-PEG10-CH2CH2COOH HOOCCH2CH2O-PEG10-CH2CH2COOH 2097010-30-3 C26H50O15
Glycerol triglycidyl ether Glycerol triglycidyl ether 13236-02-7 C12H20O6
4,4'-Oxybis(benzenesulfonyl hydrazide) 4,4'-Oxybis(benzenesulfonyl hydrazide) 80-51-3 C12H14N4O5S2
HZ-PEG-OH HZ-PEG-OH
8-arm-PEG-DSPE 8-arm-PEG-DSPE
mPEG-Rhodamine mPEG-Rhodamine
mPEG8-11-Mercaptoundecanamide mPEG8-11-Mercaptoundecanamide
ChlorinatedPolyvinylChloride ChlorinatedPolyvinylChloride 68648-82-8
Rubber Rubber
Amino-PEG23-amine Amino-PEG23-amine 2673284-93-8 C48H100N2O23
Chlortolyoxypropionsrepolyglykolester Chlortolyoxypropionsrepolyglykolester 144768-02-5
Ms-PEG10-Ms Ms-PEG10-Ms 109789-42-6 C20H42O14S2
Ethylene-chlorotrifluoroethylene resin Ethylene-chlorotrifluoroethylene resin
Vulcanization accelerator Vulcanization accelerator
Rhodium catalyst Rhodium catalyst
Neutral silicone sealant Neutral silicone sealant
Ruthenium aluminium oxide catalyst Ruthenium aluminium oxide catalyst
MPS308RO membranescale inhibitor MPS308RO membranescale inhibitor
Cyclohexanol, 4,4-(1-methylethylidene)bis-, polymer with (chloromethyl)oxirane Cyclohexanol, 4,4-(1-methylethylidene)bis-, polymer with (chloromethyl)oxirane 30583-72-3 C18H33ClO3
FA-PEG-DBCO FA-PEG-DBCO
PD 130327 PD 130327 151638-53-8
JL-1500A8 JL-1500A8
V8 Curing Agent V8 Curing Agent
Compound light stabilizer UV-791 Compound light stabilizer UV-791
alpha-t-Butyloxycarbonylamino-omega-mercapto poly(ethylene glycol) (PEG-MW 10.000 Dalton) alpha-t-Butyloxycarbonylamino-omega-mercapto poly(ethylene glycol) (PEG-MW 10.000 Dalton) C11H23NO4S
ST-500 alkylphenol formaldehyde resin tackifier ST-500 alkylphenol formaldehyde resin tackifier
SPS Blooming Inhibitor SPS Blooming Inhibitor
Eco-friendly peptizer P-11 Eco-friendly peptizer P-11
Airtightness additive SQM-1 Airtightness additive SQM-1
Ethylene oxychlorination catalyst Ethylene oxychlorination catalyst
cis-Dimethyl(N,N,N',N'-tetramethylethylenediamine)palladium(II), 99% cis-Dimethyl(N,N,N',N'-tetramethylethylenediamine)palladium(II), 99% 113822-11-0 C8H22N2Pd
2-(3,4-epoxycyclohexyl)ethylmethyldiethosysilane 2-(3,4-epoxycyclohexyl)ethylmethyldiethosysilane 14857-35-3 C13H26O3Si
2-[2-[2-[2-[2-[2-(BENZYLOXY)ETHOXY]ETHOXY]ETHOXY]ETHOXY]ETHOXY]ETHANOL 2-[2-[2-[2-[2-[2-(BENZYLOXY)ETHOXY]ETHOXY]ETHOXY]ETHOXY]ETHOXY]ETHANOL 24342-68-5 C19H32O7
9,10-Dihydro-10-(2,3-dicarboxypropyl)-9-oxa-10-phosphaphenanthrene 10-oxide 9,10-Dihydro-10-(2,3-dicarboxypropyl)-9-oxa-10-phosphaphenanthrene 10-oxide 63562-33-4 C17H15O6P
FMoc-NH-PEG12-CH2CH2COOH FMoc-NH-PEG12-CH2CH2COOH 756526-01-9 C42H65NO16
BENZYL ISONONYL PHTHALATE BENZYL ISONONYL PHTHALATE 126198-74-1 C24H30O4
DI-MICRO-CHLOROBIS[2-[(DIMETHYLAMINO)METHYL]PHENYL-C,N]DIPALLADIUM DI-MICRO-CHLOROBIS[2-[(DIMETHYLAMINO)METHYL]PHENYL-C,N]DIPALLADIUM 18987-59-2 C18H24Cl2N2Pd2+2
BIS(2-BUTOXYETHYL) ADIPATE BIS(2-BUTOXYETHYL) ADIPATE 141-18-4 C18H34O6
TYLOXAPOL TYLOXAPOL 25301-02-4 C17H28O3
MOLECULAR SIEVES MOLECULAR SIEVES 1327-44-2 AlKO6Si2
POLYETHYLENE GLYCOL MONOLAURATE N(=:)10 POLYETHYLENE GLYCOL MONOLAURATE N(=:)10 31943-11-0 HO(CH2CH2O)nOC(CH2)10CH3
PVB PVB 63148-65-2 C16H28O5
Calcium bis[monoethyl(3,5-di-tert-butyl-4-hydroxylbenzyl)phosphonate] Calcium bis[monoethyl(3,5-di-tert-butyl-4-hydroxylbenzyl)phosphonate] 65140-91-2 C17H31CaO4P
Fluorescent Brightener 185 Fluorescent Brightener 185 2866-43-5 C18H10N2O2S
CHLOROPARAFFIN C10-C13, 51,5% CL CHLOROPARAFFIN C10-C13, 51,5% CL 106232-86-4 C24H44Cl6
BIS(2-ETHYLHEXYL)PHTHALATE (RING-D4) BIS(2-ETHYLHEXYL)PHTHALATE (RING-D4) 93951-87-2 C24H38O4
Rosin Rosin 85026-55-7 C15H20O6
Poly(diallyldimethylammonium chloride) Poly(diallyldimethylammonium chloride) 26062-79-3 C24H54Cl3N3X2
1,1,3-TRIS(2-METHYL-4-HYDROXY-5-TERT-BUTYLPHENYL)BUTANE 1,1,3-TRIS(2-METHYL-4-HYDROXY-5-TERT-BUTYLPHENYL)BUTANE 1843-03-4 C37H52O3
DIETHYLENE GLYCOL MONOLAURATE DIETHYLENE GLYCOL MONOLAURATE 141-20-8 C16H32O4
O,O'-Dioctadecylpentaerythritol bis(phosphite) O,O'-Dioctadecylpentaerythritol bis(phosphite) 3806-34-6 C41H82O6P2
Desulfurizer Desulfurizer 2ZnCO3-3ZN(OH)2-2H2O
POLY(ETHYLENE GLYCOL) METHYL ETHER METHACRYLATE POLY(ETHYLENE GLYCOL) METHYL ETHER METHACRYLATE 26915-72-0 C13H24O6
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