ETHYLENE TETRAMERIZATION 1-OCTENE PDF

PDF | Data on the activity, selectivity, and reaction conditions for the selective oligomerization of ethylene to octene-1 mediated by chromium-containing organic. MAO is requisite in forming active species for ethylene tetramerization toward 1- octene. TCE shows significant promotion effect to assist. higher catalytic activity and longer lifetime for ethylene tetramerization in the presence ethylene tetramerization, 1-octene, trinuclear, diphenylphosphinoamine.

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Further, in the P-C-C-P backbone structure ligand represented by Formula 1 above, R and R 6 are not hydrogen but each independently a hydrocarbyl group and substituted hydrocarbyl group.

The catalyst system for tetramerizing ethylene according to claim 7, wherein the chromium or chromium precursor is selected from the group consisting of chromium III acetylacetonate, chromium trichloride tristetrahydrofuran, and chromium III 2- ethylhexanoate. Comparative Catalyst Preparation Example 1: The reaction product was stirred overnight, and then the solvent was removed therefrom in a vacuum to form phosphine.

It was found that the weight of the product, determined through GC, was 9. As a result, a reddish brown oily product having yellow crystals, [Ni 2S,3S -bis di-p-methoxyphenyl phosphorous butane 2 ] ClO 4 2was formed. Preferably, R 1R 2R 3 and R 4 may be each independently selected from the group consisting of phenyl, benzyl, naphthyl, 4-methylphenyl, 4-ethylphenyl, 4-isopropylphenyl, 4-t-butylphenyl, 4-methoxyphenyl, and A- isopropoxyphenyl.

In the P-C-C-P backbone structure ligand represented by Formula 1 above, RRR and R 4 may be each independently selected from the group consisting of phenyl, benzyl, naphthyl, anthracenyl, mesityl, xylyl, methyl, ethyl, ethylenyl, propyl, propenyl, propynyl, butyl, cyclohexyl, 4-methylcyclohexyl, 4-ethylcyclohexyl, 4-isopropylcyclohexyl, tolyl, A- methylphenyl, 4-ethylphenyl, 4-isopropylphenyl, 4-t-butylphenyl, 4-methoxyphenyl, A- isopropoxyphenyl, cumyl, methoxy, ethoxy, phenoxy, tolyloxy, diniethylamino, thiomethyl, trimethylsilyl, and dimethylhydrazyl.

Species Ethylene tetramerization catalyst compositions and tetramerization process of ethylene.

Ethylene tetramerization: a new route to produce 1-octene in exceptionally high selectivities.

Ethykene catalyst etuylene for tetramerizing ethylene according to any one of claims 1 to 6, wherein the transition metal or transition metal precursor includes chromium or a chromium precursor.

Separation of components from a multi-component hydrocarbon stream which includes ethylene. The catalyst system for tetramerizing ethylene according to claim 1, wherein, in the P. A phenyl 2 P l,2-phenyl P phenyl 2 ligand was prepared by reacting diphenylphosphine with 2 equivalents of dibromoalkyl in dimethylfluoromethylene DMF and cesium hydroxide atmospheres, as disclosed in the document “R. Examples of 1octene reactors may include, but are not limited to, a batch reactor, a semibatch reactor, and a continuous reactor.

Subsequently, ethylene was charged in the reactor at a pressure of 30 bar, and was then stirred at a stirring speed of rpm. The catalyst activator may be a single compound or a mixture thereof. Some organic layer samples were passed through anhydrous magnesium sulfate, dried, and then analyzed using GC-FID.

The mixed solution was slowly heated to room temperature and then stirred for 30 minutes. The solution was reacted for 49 hours at room temperature, and 60 mi of distilled water was added thereto, and the solution was extracted three times using 60 mi of DMC to form an organic layer.

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A catalyst system for tetramerizing ethylene, comprising a transition metal or a transition metal precursor, a cocatalyst, and a P-C-C-P backbone structure ligand represented by Formula 1 below:. Mitra et al, J. Highly active and highly selective ethylene oligomerization catalyst, and preparation method of hexene or octene using same.

The method of tetramerizing ethylene according to the present invention may be conducted using a plant equipped with various types of reactors. Tetgamerization backbone structure ligand represented ethlyene Formula 1 above, R 1R 2R 3 and R 4 are each independently selected from the group consisting of phenyl, benzyl, naphthyl, anthracenyl, mesityl, xylyl, methyl, ethyl, ethylenyl, propyl, propenyl, propynyl, butyl, cyclohexyl, A- methylcyclohexyl, 4-ethylcyclohexyl, 4-isopropylcyclohexyl, tolyl, 4-methylphenyl, 4- ethylphenyl, 4-isopropylphenyl, 4-t-butylphenyl, 4-methoxyphenyl, 4-isopropoxyphenyl, cumyl, methoxy, ethoxy, phenoxy, tolyloxy, dimethylamino, thiomethyl, trimethylsilyl, and dimethylhydrazyl.

Tetramerization of ethylene using CrChftefrahvdrofuranK R. Olefin trimerisation using a catalyst comprising a source of chromium, molybdenum or tungsten and a ligand containing at least one phosphorous, arsenic or antimony atom bound to at least one hetero hydrocarbyl group.

Chromium-Based Catalyst for Ethylene Tetramerization to 1-Octene

Aluminoxane may be combined with a transition metal compound, particularly a chromium compound, such that the combination ratio of aluminum to metal is about 1: The catalyst system for tetramerizing ethylene according to claim 1, wherein the P-C- C-P backbone structure ligand is selected from the group consisting of phenyl 2 P.

RU Kind code of ref document: Tetramerization of ethylene using Cr IID acetylacetonate j. It was found that the weight of the product, determined through GC, etuylene 2.

The entire reaction product was used in subsequent processes, without removing the twtramerization therefrom. The present invention relates to a catalyst system for tetramerizing ethylene and a method of preparing 1-octene by tetramerizing ethylene using the catalyst system. Recently, research on methods 11-octene producing 1-octene by selectively tetramerizing ethylene through transition metal catalysis has been conducted.

It was found that the weight of the product, determined through GC, was 6.

In order to analyze the liquid using GC-FBD, nonane, serving as an internal standard substance, was added etyylene. The ether extract was filtered in a solution of 50 ml of ethanol and 15 g of nickel perchlorate hexahydrate in a nitrogen atmosphere.

Method for producing a high activity and high selectivity ethylene oligomerization catalyst and hexene or octene using the same. Accordingly, in the tetramerization of ethylene, it can be seen that the catalyst system comprising the P-C-C-P backbone structure ligand according to the present invention 1-ocetne the same catalytic activity and selectivity as the conventional catalyst system, and that it can stably maintain catalytic activity better than the conventional catalyst system.

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In relation to this, U. The solution was reacted for 45 hours at room temperature, and 60 ml of distilled water was added thereto, and the solution was extracted three times using 60 ml of DMC to form 1-octee organic layer.

It was found that the weight of the product, determined through GC, was 1. Highly active and selective ethylene oligomerization catalyst and method of preparing hexene or octene using the same.

The plant may include a reactor, an olefin reactor and a catalyst system inlet port provided in the reactor, a line for discharging oligomerized products from the reactor, and at least one separator for separating the oligomerized products. The solution was reacted for 72 hours at room temperature, and 60 mi of distilled water was added thereto, and the solution was extracted three times using 60 mi of DMC to form an organic layer.

Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining reaction activity by tetramerizing ethylene using a chromium-based catalyst system comprising a transition metal or a transition metal precursor, a cocatalyst, and a P-C-C-P backbone structure ligand represented by R1 R2 P- R5 CHCH R6 -P R3 R4.

As a result, only a colorless glossy solid remained.

Ethylene tetramerization: a new route to produce 1-octene in exceptionally high selectivities.

Comparative Catalyst Preparation Example 4: Further, the P-C-C-P tteramerization structure ligand or the transition metal compound may be fixed by bonding it with silica, silica gel, polysiloxane, alumina, or the like. Catalyst for oligomerization of ethylene, tetrsmerization for preparation thereof and process for oligomerization using it. Examples 9 to 12 and Comparative Examples 14 to 17 were conducted to compare the 1-octene production yields of the P-C-C-P backbone structure ligand of the present invention with those of the conventional hetero atom structure PNP ligand depending on reaction times.

Further, the conventional PNP backbone structure ligand having heteroatoms is also problematic in that, in the preparation of 1-octene, reaction activity cannot be maintained constant, and the reaction rate is also rapidly decreased with the reaction of time.

The oily product was extracted twice using mi of ether, and was then dried by Na 2 SO 4 to form an tetraamerization extract. This method of preparing 2R,3R -dibutanediol di-p-toluenesulfonate was conducted as disclosed in the thesis “R.

Specifically, R 5 and R 6 may be each independently selected from the group consisting of alkyl, substituted alkyl, tetramwrization, substituted aryl, aryloxy, substituted aryloxy, alkoxycarbonyl, carbonyloxy, alkoxy, aminocarbonyl, carbonylamino, dialkylamino, silyl, derivatives thereof, and aryl substituted with these arbitrary substituents. Bosnich et al, J.