ETHYLENE TETRAMERIZATION 1-OCTENE PDF

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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Example 1, to form a mixture, and then the mixture was stirred at room temperature for 5 minutes and then added to the reactor. This organic boron compound may tftramerization used in the form in which it is mixed with the organic aluminum compound. 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.

The solution was reacted for 48 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.

Comparative Catalyst Preparation Example 3: The oily product was extracted twice using m of ether, and was then dried using Na 2 SO 4 to form an ether extract.

Chromium-Based Catalyst for Ethylene Tetramerization to 1-Octene

Further, the aluminoxane used as the cocatalyst of the catalyst system according to the present invention may be selected from among alkylaluminoxane, such as methylaluminoxane MAO and ethylaluminoxane EAOand modified alkylaluminoxane, such as modified methylaluminoxane MMAO. 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. The coordination complex of the transition metal compound and the P-C-C-P backbone structure ligand can dissolve at room temperature or higher, but can be transformed to adhere to polymer chains such that it is insoluble.

Oligomerisation in the presence of both a tetramerisation catalyst and a further oligomerisation catalyst. As shown in FIG.

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The reaction product was stirred overnight, and then the solvent was removed therefrom in a vacuum to form phosphine. Preparation of phenyl 2 P L2- phenyliPCphenyl?

Finally, the colorless glossy solid was recrystallized using 60 mi of anhydrous. Tetramerization of ethylene using Cr III acetylacetonate.

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

The oily product was extracted twice using mi of ether, and was then dried by Na 2 SO 4 to form an ether extract. In relation to this, U. While the catalytic components are mixed, olefin exhibits a protective effect, thus improving the performance of a catalyst. Ethylene tetramerization catalyst systems and method for preparing 1-octene using the same. Kind code of ref document: This solid product was completely washed with ethanol and was then finally washed with ether to form a nickel complex.

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Typical examples of such a multi P-C-C-P backbone structure ligand may include l,2,4,5-tetra- P 4-ethylphenyl 2 cyclohexane, l,2,4,5-tetra- P 4- ethylphenyl 2 benzene, l,2,3,4-tetra- P 4-ethylphenyl 2 cyclopentane, and the like.

It was found that the weight of the product, determined through GC, was Method for producing ethylene tetramerization catalyst system and 1-octene using the same. The transition metal that is used for the catalyst system of the tetarmerization invention may be selected from among chromium, molybdenum, tungsten, titanium, tantalum, vanadium, and zirconium, and may preferably be chromium. Soc 84 “.

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

Catalyst composition for ethylene tetramerization and preparation method of ligand thereof. The entire reaction product was used in subsequent processes, without removing the phosphine therefrom. The catalyst system for tetramerizing ethylene according to claim 3, wherein, in the P- C-C-P backbone structure ligand represented by Formula 1 above, R 1R 2R 3 and R 4 are each independently 1-octee from the group consisting of phenyl, benzyl, naphthyl, 4- methylphenyl, 4-ethylphenyl, 4-isopropylphenyl, 4-t-butylphenyl, 4-methoxyphenyl, and 4- isopropoxyphenyl.

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a tetramerizatuon 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 the following Formula 1: The mixture reacted strongly, and was then refluxed and heated for 2 1-octne to obtain a Tetramfrization reagent.

The 4-methoxyphenyllithium thus formed was decomposed by dropping The formed phenyl lithium was decomposed by dropping 33 g of distilled and refined t-butyl chloride thereinto for 45 minutes. Bosnich et al, J. Further, the P-C-C-P backbone structure ligand or the transition metal compound may be fixed by bonding it with silica, etnylene gel, polysiloxane, alumina, or the like.

C-C-P backbone structure ligand represented by 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.

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. 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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It was found that the weight of the product, determined through GC, was 4. US USB2 en Mitra et al, J. It was 0 found that the weight of the product, determined through GC, was 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.

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. This Grignard reagent was dropped into Tetramerization of ethylene using Cr IID acetylacetonate j. Here, most commonly-known transition metal catalysts are chromium-based catalysts. The transition metal compound for catalyzing the tetramerization of ethylene according to the present invention may be an inorganic salt, an organic salt, a metal- 1-octrne complex, or a metallo-organic complex, and may preferably be chromium or a chromium precursor.

The reaction mixture was further stirred for 24 hours, and was then filtered to remove triethylammonium salts therefrom. A phenyl 2 PCH methyl CH 2 P phenyl 2 was prepared by reacting diphenylphosphine with 2 1-octee of dibromoalkyl in dimethylfluoromethylene DMF and cesium hydroxide atmospheres, as disclosed in the document “R.

Based on the finding, the present invention was completed. The solution was reacted for 72 hours at room temperature, and 60 ml of distilled water was added thereto, and the solution was extracted tetramerizationn times using 60 ml of DMC to form an organic layer. In order to prepare 1-octene at high selectivity, a catalyst system comprising the ligand of the present invention may be manufactured through a process of combining tetrzmerization metal compounds and cocatalysts in an arbitrary order.

Meanwhile, 70 g of recrystallized tri 4-methoxyphenyl phosphorus and mi of dried tetrahydrofuran THF were put into a 1 Tetramerizatiion three-neck flask equipped with a mi funnel for dropping, a condenser for reflux cooling and a nitrogen injector to form a solution.

L 5 order to analyze the liquid using GC-FID, nonane, serving as an internal standard substance, was added thereto.

In this case, the yield of 1-octene means the weight ratio of 1-octene to total reaction products. The mixture was heated for 20 minutes until it reached room temperature, and was then left in a 1o-ctene state at room temperature overnight.