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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Hereinafter, the present invention will be described in more detail with reference to the following Examples, which are set forth to illustrate, but are not to be ethylenw as etylene limit of the present invention. When ethylene is tetramerized using the chromium-based catalyst system including a P- C-C-P backbone structure ligand according to the present invention, it is advantageous in that highly pure 1-octene can be prepared because the chromium-based catalyst system has high catalytic activity and high 1-octene selectivity, and in that the activity of the chromium-based catalyst system is maintained stable, and thus the decrease in reaction rate with reaction time can be prevented.

Thereafter, simultaneously, LiP 4-OMe-Ph 2 was formed in the solution, heat was generated in the solution, and the solution became dark reddish yellow. Kind code of ref document: Examples of the reactors may include, but are not limited to, a batch reactor, a semibatch reactor, and a continuous reactor.

Chromium-Based Catalyst for Ethylene Tetramerization to 1-Octene

Tetramerization of ethylene using Cr 2-ethylhexanoate ‘ h. The solution was reacted for 72 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 an organic layer. It was found that the ethyylene of the product, determined through GC, was 2.

The method of tetramerizing ethylene according to the present invention may be conducted using a plant equipped with various types of reactors. The P-C-C-P backbone structure ligand according to the present invention may be prepared using various methods commonly known to those skilled in the art. In order to analyze the liquid using GC-FDD, nonane, serving as an internal standard substance, was added thereto.

The present invention provides a catalyst system for tetramerizing ethylene, comprising a transition metal or a transition tetramerizaton precursor, a cocatalyst, and a P-C-C-P backbone structure ligand represented by Formula 1 below: RU Kind code of ref document: The results of tetramerization of ethylene in Comparative Examples 14 to 17 are given in Table 2, and the changes in reaction activity ethypene selectivity depending on reaction time are shown in FIGS.

  HIDROLIK PRESLER PDF

This solid product was completely washed with ethanol and was then finally washed with ether to form a nickel complex. First, mg 2. Bosnich et al, J. The catalyst system for tetramerizing ethylene according to claim 1, wherein the catalyst system comprises a multi P-C-C-P backbone structure ligand in which two or more of the P-C-C-P backbone structure ligands are bonded with 1-octsne other.

Typical examples of such a tetramerizatipn 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. Subsequently, ethylene was charged in the reactor at a pressure of 30 bar, and was then stirred at a stirring speed of rpm.

That is, it can be seen that the catalyst system comprising the P-C-C-P backbone structure ligand according to the present invention can tetra,erization stable catalytic activity better than the conventional catalyst system comprising the PNP ligand.

Chromium-Based Catalyst for Ethylene Tetramerization to 1-Octene

EP EPB1 en 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 catalytic components constituting the catalyst system of the present invention may be simultaneously or sequentially combined with each other in the presence of a solvent or in tetramerizayion absence of a solvent. CN CNB en 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 1-ocfene with the reaction of time.

The results of tetramerization of ethylene in Examples 9 to 12 are given in Table 2, and the changes in reaction activity and selectivity depending on reaction time are shown in FIGS, l and 2.

EP Kind code of ref document: Comparative Catalyst Preparation Example 5: In order to analyze the liquid ethykene GC-FED, nonane, serving as an internal standard substance, was added thereto.

The slurry solution was cooled to form it into a solid, and then the solid was washed with 25 mi of water twice and then rapidly tstramerization using ethanol, cooled using ice, to form a beige solid containing impurities. A phenyl 2 PCH 2 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.

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

When 1-octene is prepared using the catalyst system of the present invention in the presence of an inactive solvent, arbitrary inactive solvents that do not react with each catalytic component and a cocatalyst may be used as the inactive solvent.

  HERBERT FEIGL THE MENTAL AND THE PHYSICAL PDF

Preparation of phenyl 2 P L2- phenyliPCphenyl? L 0 pressure of 30 bar, and then stirred at a stirring speed of rpm. Tetramerization of ethylene using Cr IID acetylacetonate j. 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.

The catalyst activator may be a single compound or a mixture thereof.

It was found that the weight of the product, determined through GC, was 4. Finally, the colorless glossy solid was recrystallized using 60 mi of anhydrous. The cocatalyst that is used in the present invention may be a compound used to activate a catalyst when it is mixed with ethylens P-C-C-P backbone structure ligand and the transition metal compound. Comparative Catalyst Preparation Example 3: The reaction product was stirred overnight, and then the solvent was removed therefrom in a vacuum to form phosphine.

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 an organic layer.

Thus, the nickel complex was slowly dissolved, and was thus formed into a red solution, [Ni S,S -chiraphos 2 Ethykene 3 ] “and then the red solution changed into a turbid beige solution. Example 1, to form a mixture, and then the mixture was stirred at room temperature 1-octeen 5 minutes and ethjlene added to the reactor.

Comparative Etyylene Preparation Example 2: 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.

Catalyst Preparation Example 2: Excess ice pieces were added to the mixture, which was then vigorously shaken to prevent agglomeration.

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

L 5 order to analyze the liquid using GC-FID, nonane, serving as an internal standard substance, was added thereto. The catalyst system for tetramerizing ethylene according to claim 1, wherein, in the P. US USB2 en