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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
N3-PEG7-Mal N3-PEG7-Mal
Umicore CX33 Umicore CX33 1380314-24-8 C78H64ClN2Pd
KAPTONE KAPTONE 60842-76-4
Molybdenum Disulfide Lithium Base Grease Molybdenum Disulfide Lithium Base Grease
(η5-2,4-Cyclopentadien-1-yl)[(1,2,3-η)-1-phenyl-2-propenyl]-palladium 95% (η5-2,4-Cyclopentadien-1-yl)[(1,2,3-η)-1-phenyl-2-propenyl]-palladium 95% 105333-10-6 C14H14Pd
Sodium (R)-alpha-lipoate Sodium (R)-alpha-lipoate 176110-81-9 C8H15NaO2S2
1H-Imidazole polymer with 2-(chloromethyl)oxirane and morpholine 1H-Imidazole polymer with 2-(chloromethyl)oxirane and morpholine 109882-76-0 C10H18ClN3O2
Methanesulfonato(tricyclohexylphosphine)(2'-aMino-1,1'-biphenyl-2-yl)palladiuM(II) dichloroMethane adduct Methanesulfonato(tricyclohexylphosphine)(2'-aMino-1,1'-biphenyl-2-yl)palladiuM(II) dichloroMethane adduct 1445086-12-3 C31H46NO3PPdS
XantPhos-Pd-G2 XantPhos-Pd-G2 1375325-77-1 C51H42ClNOP2Pd
Alkyne-PEG-N3 Alkyne-PEG-N3
Alkyne-PEG-OH Alkyne-PEG-OH
SH-PEG-COOH SH-PEG-COOH
Allyl(cyclopentadienyl)palladium(II) Allyl(cyclopentadienyl)palladium(II) 1271-03-0 C8H10Pd
MPEG-CH2CH2COOH MPEG-CH2CH2COOH
Polyethylene glycol-G-azido Polyethylene glycol-G-azido
Poly(dimethylsiloxane-co-methylphenylsiloxane) Poly(dimethylsiloxane-co-methylphenylsiloxane) 63148-52-7 C21H24O3Si3X2
Silane-PEG-COOH Silane-PEG-COOH
DSPE PEG Biotin DSPE PEG Biotin 740794-01-8
TRANS-DIAMMINEDINITROPALLADIUM(II) TRANS-DIAMMINEDINITROPALLADIUM(II) 28068-05-5 H4N4O4Pd
CELLULOSE CELLULOSE 9012-19-5 (C6H10O5)n
TAMRA-PEG4-alkyne TAMRA-PEG4-alkyne 1225057-68-0 C36H41N3O8
PTFE ultrafine powder PTFE ultrafine powder
Sintering agent Sintering agent
Methylamino-PEG3-azide Methylamino-PEG3-azide 1355197-57-7 C9H20N4O3
mPEG-SG(mPEG-Succinimidyl Glutarate ester ) mPEG-SG(mPEG-Succinimidyl Glutarate ester )
Fmoc-NH-PEG-SH Fmoc-NH-PEG-SH
Alkyne-PEG-IA Alkyne-PEG-IA
NH-(PEG3-acid)2 NH-(PEG3-acid)2 1814901-04-6 C18H35NO10
TAMRA-Azide-PEG-Biotin TAMRA-Azide-PEG-Biotin 1797415-74-7
Bromo-PEG6-azide Bromo-PEG6-azide 2062663-64-1 C14H29BrN3O6+
mPEG-TCO mPEG-TCO
Methotrexate PEG DSPE Methotrexate PEG DSPE
TCO PEG Biotin TCO PEG Biotin
UV 144 UV 144 63843-89-0 C42H72N2O5
Biotin-PEG6-NH2 Biotin-PEG6-NH2
SH-PEG6-N3 SH-PEG6-N3
IA-PEG4-Biotin IA-PEG4-Biotin
Zinc N-Ethyl-N-phenyldithiocarbamate Zinc N-Ethyl-N-phenyldithiocarbamate 14634-93-6 C18H20N2S4Zn
Polyaniline Polyaniline 25233-30-1 C6H7N
APA-1042 APA-1042 647030-43-1 C41H38Cl2Zr
4-ArmPEG-(3COOH-1NH2) 4-ArmPEG-(3COOH-1NH2)
Acetylthio-PEG-NH2 Acetylthio-PEG-NH2
Biotin-PEG-FA Biotin-PEG-FA
CLS-PEG-CHO CLS-PEG-CHO
FITC-PEG-SC FITC-PEG-SC
NH2-PEG-Galactose NH2-PEG-Galactose
MAL-PEG-Palmitic acid MAL-PEG-Palmitic acid
Ph-PEG-Ph Ph-PEG-Ph
PLGA(5K)-PEG-COOH PLGA(5K)-PEG-COOH
PLGA(8K)-PEG-COOH PLGA(8K)-PEG-COOH
SH-PEG-SG SH-PEG-SG
VE-PEG-NH2 VE-PEG-NH2
Monostearin-PEG-COOH Monostearin-PEG-COOH
Brominated SBS Brominated SBS 1195978-93-8
polyphenyl ether polyphenyl ether 31533-76-3 C30H22O4
Palladium alumina catalyst Palladium alumina catalyst
Mercapto silica gel metal adsorbent palladium removal reagent raw material palladium removal adsorbent Mercapto silica gel metal adsorbent palladium removal reagent raw material palladium removal adsorbent
plasticized bisphenol A plasticized bisphenol A
DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4 DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4 167693-36-9 C20H28N4O16Rh2
N,N-Diethylpropargylamine N,N-Diethylpropargylamine 4079-68-9 C7H13N
Diphenylmethylidene(cyclopentadienyl)(9-fluorenyl)zirconium dichloride Diphenylmethylidene(cyclopentadienyl)(9-fluorenyl)zirconium dichloride 132510-07-7 C31H22.Cl2Zr
Carbomer 956 Carbomer 956
1,2-DISTEAROYL-PHOSPHATIDYLETHANOLAMINE-METHYL-POLYETHYLENEGLYCOL CONJUGATE 1,2-DISTEAROYL-PHOSPHATIDYLETHANOLAMINE-METHYL-POLYETHYLENEGLYCOL CONJUGATE
SA-PEG-FITC SA-PEG-FITC
ROYCO 64 ADVANCED SYNTHETIC MULTI-PURPOSE AIRCRAFT GREASE ROYCO 64 ADVANCED SYNTHETIC MULTI-PURPOSE AIRCRAFT GREASE
Silane-PEG6-Biotin Silane-PEG6-Biotin
SH-(CH2)11-PEG3-COOH SH-(CH2)11-PEG3-COOH
SH-PEG7-SH SH-PEG7-SH
OH-PEG-SS OH-PEG-SS
Alkene-PEG-PLA(3K) Alkene-PEG-PLA(3K)
PLGA(10K)-PEG-Mal PLGA(10K)-PEG-Mal
Benzyl-PEG-OH Benzyl-PEG-OH
PLL-PEG-OH PLL-PEG-OH
PLGA(2K)-PEG-SC PLGA(2K)-PEG-SC
Phosphoric acid-PEG-COOH Phosphoric acid-PEG-COOH
ASP-PEG-ASP ASP-PEG-ASP
8-ArmPEG-(6Arm-Mal,2Arm-Biotin) 8-ArmPEG-(6Arm-Mal,2Arm-Biotin)
Cy3.5-PEG-Mal Cy3.5-PEG-Mal
mPEG-DMPE(ammonium salt) mPEG-DMPE(ammonium salt)
[1,3-bis[2,6-bis(1-ethylpropyl)phenyl]-4,5-dichloro-imidazol-2-ylidene]-dichloro-(3-chloropyridin-1-ium-1-yl)palladium [1,3-bis[2,6-bis(1-ethylpropyl)phenyl]-4,5-dichloro-imidazol-2-ylidene]-dichloro-(3-chloropyridin-1-ium-1-yl)palladium 1435347-24-2 C40H54Cl5N3Pd
PLA-PEG-MAL PLA-PEG-MAL
dimethyl (p-methoxybenzylidene)malonate dimethyl (p-methoxybenzylidene)malonate 7443-25-6 C13H14O5
Polyester Polyester 113669-95-7 C4H10O2·
Micron ruthenium powder Micron ruthenium powder
OC Catalyst OC Catalyst
Silicone gel for palladium removal Silicone gel for palladium removal
Petroleum resins Petroleum resins 68131-77-1
Palladium(1+), [2'-(amino-κN)[1,1'-biphenyl]-2-yl-κC][2'-(diethylphosphino-κP)-N2,N2,N6,N6-tetramethyl[1,1'-biphenyl]-2,6-diamine-κN2]-, methanesulfonate (1:1) Palladium(1+), [2'-(amino-κN)[1,1'-biphenyl]-2-yl-κC][2'-(diethylphosphino-κP)-N2,N2,N6,N6-tetramethyl[1,1'-biphenyl]-2,6-diamine-κN2]-, methanesulfonate (1:1) 2195390-10-2 C33H42N3O3PPdS
1H-Isoindole-1,3(2H)-dione, 2-(2,6-dioxo-3-piperidinyl)-4-[[2-[2-(2-propyn-1-yloxy)ethoxy]ethyl]amino]- 1H-Isoindole-1,3(2H)-dione, 2-(2,6-dioxo-3-piperidinyl)-4-[[2-[2-(2-propyn-1-yloxy)ethoxy]ethyl]amino]- 2138439-56-0 C20H21N3O6
Palladium, [μ-[1,1'-(1,4-butanediyl)bis[1,1-bis(1,1-dimethylethyl)phosphine-κP]]]dichlorobis(η3-2-propen-1-yl)di- Palladium, [μ-[1,1'-(1,4-butanediyl)bis[1,1-bis(1,1-dimethylethyl)phosphine-κP]]]dichlorobis(η3-2-propen-1-yl)di- 2756973-33-6 C26H50Cl2P2Pd2
[mPEG-DSPE] 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxypoly(ethylene glycol)] [mPEG-DSPE] 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxypoly(ethylene glycol)]
PTFE dispersion JF-4DCA PTFE dispersion JF-4DCA
Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate Bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate 52829-07-9 C28H52N2O4
(3aS,4S,6aR)-Hexahydro-2-oxo-N-(15-oxo-3,6,9,12-tetraoxa-16-azanonadec-18-yn-1-yl)-1H-thieno[3,4-d]imidazole-4-pentanamide (3aS,4S,6aR)-Hexahydro-2-oxo-N-(15-oxo-3,6,9,12-tetraoxa-16-azanonadec-18-yn-1-yl)-1H-thieno[3,4-d]imidazole-4-pentanamide 1006592-45-5 C24H40N4O7S
Tris[μ-[(1,2-η:4,5-η)-(1E,4E)-1,5-bis(4-methoxyphenyl)-1,4-pentadien-3-one]]di-palladium Tris[μ-[(1,2-η:4,5-η)-(1E,4E)-1,5-bis(4-methoxyphenyl)-1,4-pentadien-3-one]]di-palladium 52552-56-4 C57H60O9Pd2
α-Allyl-ω-succiniMidyl poly(ethylene glycol) α-Allyl-ω-succiniMidyl poly(ethylene glycol)
α-ForMyl-ω-hydroxyl poly(ethylene glycol) α-ForMyl-ω-hydroxyl poly(ethylene glycol)
XPhos Pd G3 XPhos Pd G3 1445085-55-1 C46H62NO3PPdS
 	Silyl Acrylate Self-polishing Resin Silyl Acrylate Self-polishing Resin
O-(3-Carboxypropyl)-O'-[2-(3-MercaptopropionylaMino)ethyl]-polyethylene glycol Mw 5000 O-(3-Carboxypropyl)-O'-[2-(3-MercaptopropionylaMino)ethyl]-polyethylene glycol Mw 5000 1220112-75-3
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