ETHYLENE TETRAMERIZATION 1-OCTENE PDF

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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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Examples ethylenr the reactors may twtramerization, but are not limited to, a batch reactor, a semibatch reactor, and a continuous reactor. Examples of the organic boron compound may include boroxine, NaBH 4triethylborane, triphenylborane, triphenylborane ammonia complex, tributyl borate, triisopropyl borate, tris pentafluorophenyl borane, trityl tetrapentafluorophenyl borate, dimethylphenylammonium tetrapentafluorophenyl borate, diethylphenylammonium tetrapentafluorophenyl borate, methyldiphenylammonium tetrapentafluorophenyl borate, ethyldiphenylammonium tetrapentafluorophenyl borate, and the like.

The present invention provides 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: First, mg 2. A cyclohexyl 2 PCH 2 CH 2 P cyclohexyl 2 ligand was prepared by reacting ttramerization 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.

Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and tetramerizztion object of the present invention is to provide 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 the following Formula 1: Further, it was found that the total weight of the tetramerizatlon mixture, determined through GC, was The Tetramerizwtion backbone structure ligand according to the present invention may be prepared using various methods commonly known to those skilled in the art.

Comparative Catalyst Preparation Example 7: The solution was reacted for 45 hours at room temperature, and 60 ml tetrameriation distilled water was added thereto, and the solution was extracted three times using 60 ml of DMC to form an organic layer. Separation of components from a multi-component hydrocarbon stream which includes ethylene. R 1RR 3 and R 4 may be each independently an aromatic group and 1-odtene substituted aromatic group, each of the R 1R 2R 3 and R 4 may be substituted with a non-electron donor group on at least one atom thereof, which is not adjacent to the atom bonded with the P atom, and each of the R 1R 2R 3 and R 4 may be substituted with a nonpolar group on at least one atom thereof, which is not adjacent to the atom bonded with the P atom.

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Organometallic complexes of scandium and yttrium supported by a bulky salicylaldimine ligand. Tetramerization of ethylene using Cr III acetylacetonate. Catalyst Preparation Tetramerziation 1: 1-octenw 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. Such inactive solvents may include saturated aliphatic hydrocarbons, unsaturated aliphatic hydrocarbons, aromatic hydrocarbons and halogenated hydrocarbons, and preferably may include, but are not limited to, benzene, toluene, xylene, cumene, heptane, cyclohexane, methylcyclohexane, methylcyclopentane, n-hexane, 1 -hexene, and the like.

Some organic layer samples were passed through anhydrous magnesium sulfate, dried, and then tetramerizatiln using GC-FID. Comparative Catalyst Preparation Example 6: The transition metal that is used for the catalyst system of the present invention may be selected from among chromium, molybdenum, tungsten, titanium, tantalum, vanadium, and zirconium, and may preferably be chromium.

Highly active and highly selective ethylene oligomerization catalyst, trtramerization preparation method of hexene or octene using same. Subsequently, ethylene was charged in the reactor at a pressure of 30 bar, and then stirred at a stirring speed of rpm.

EP Kind code of ref document: The reaction product was stirred overnight, and then the solvent was removed therefrom in a vacuum to form phosphine. The catalyst system for tetramerizzation ethylene according to any one of claims 1 to 6, wherein the cocatalyst includes methylaluminoxane MAO or ethylaluminoxane EAO. Soc 84 “.

Disclosed herein is a method of preparing 1-octene at high activity and high selectivity while stably maintaining tetramerizatiom 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.

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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 maintain stable catalytic activity better than the conventional catalyst system comprising the PNP ligand.

The entire reaction product was used in subsequent processes, without removing the phosphine therefrom. Further, in the method of 1-odtene present invention, in addition to 1-octene, a large or small amount of 1-butene, 1- hexene, methylcyclopentane, methylenecyclopentane and propylcyclopentane, and a large amount of higher oligomers and polyethylene can be prepared, depending on P-C-C-P backbone structure ligand and condition for the reaction.

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

Tetramerization of ethylene using Cr IID The mixture reacted strongly, and was then refluxed and heated for 2 hours to obtain a Grignard reagent. L 0 pressure of 30 bar, and then stirred at a stirring speed of rpm. Thus, the nickel complex was ethylsne dissolved, and was thus formed into a red solution, [Ni S,S -chiraphos 2 CN 3 ] “and then the red solution changed into a turbid beige solution. Preparation of phenyl 2 P L2- phenyliPCphenyl?

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Otherwise, the reaction process and product treatment processes were conducted as in Example 1. The results of tetramerization tetramerizztion ethylene in Examples 9 to 12 are given tetramerizatiln Table 2, and the changes in reaction activity and selectivity depending on reaction time are shown in FIGS, l and 2.

Excess ice pieces were added to the mixture, which was then vigorously shaken to prevent agglomeration. 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.

Catalyst composition for ethylene tetramerization and preparation method of ligand thereof. As shown in FIG.