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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It was found that the weight of the product, determined through GC, was Further, German Patent No.

Highly active and highly selective ethylene oligomerization catalyst, and preparation method etthylene hexene or octene using same. 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. Method and apparatus for generating hydrogen from ammonia borane based hydrogen storage material, catalyst used therein, apparatus using the generated hydrogen. Catalyst Preparation Example tetdamerization Method for producing a ehtylene activity and high selectivity ethylene oligomerization catalyst and hexene or octene using the same.

The solution was reacted for 60 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.

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, tetramerizafion, 4-t-butylphenyl, 4-methoxyphenyl, A- isopropoxyphenyl, cumyl, methoxy, ethoxy, phenoxy, tolyloxy, diniethylamino, thiomethyl, trimethylsilyl, and dimethylhydrazyl.

Disclosed herein is a method of preparing 1-octene at tetamerization 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.

Preferred examples tetramerizatoon the catalyst activator may include organic aluminum compounds, organic boron compounds, and organic salts. The P-C-C-P backbone structure ligand according to the present invention, which is a ligand having an independent structure, unlike a conventional hetero R n PN R’ P R m ligand, has only one hetero atom, phosphorus Pin the backbone structure thereof. Method for producing ethylene tetramerization catalyst system and 1-octene using the same. 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.

Chromium-Based Catalyst for Ethylene Tetramerization to 1-Octene

This oily crystalline mixture was added to a solution in which 8. Country of ref document: In order to analyze the liquid using GC-FBD, nonane, serving as an internal standard substance, was added thereto.

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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 each other.

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 16 hours at room temperature, and 60 ml of distilled water was added thereto, and the solution was extracted three times using 60 ni-C 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. The 4-methoxyphenyllithium thus formed was decomposed by dropping Based on the finding, the present invention was completed.

The oily product was extracted twice using m of ether, and was then dried using Na 2 SO 4 to form an ether extract. A process for oligomerising a hydrocarbon to form at least one co-monomer product. However, the ethylene oligomerization reaction is inefficient in that a large amount of butene, octene, derivatives of octene and specific higher oligomers are formed together with polyethylene. 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.

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. Comparative Catalyst Preparation Example 9: The solution was reacted for 48 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.

A method of preparing 1-octene by tetramerizing ethylene using the catalyst system according to any one of claims 1 to 6. Comparative Catalyst Preparation Example 8: Subsequently, ethylene was charged in the reactor at a.

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

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Comparative Catalyst Preparation Example 7: Tetramerization of ethylene using Cr III acetylacetonate. Ethylene tetramerization catalyst systems and method for preparing 1-octene using the same. The aluminoxane oligomer compound may be a linear aluminoxane, a cyclic aluminoxane, a cage aluminoxane, or a mixture of two or more different aluminoxanes. Otherwise, the reaction process and product treatment processes were conducted as in Example 1. An ethylene tetramerization catalyst composition and method of Ethylene tetramerization.

Finally, the colorless glossy solid was recrystallized using 60 mi of anhydrous ethanol to obtain 5. 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.

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Comparative Catalyst Preparation Example 6: Mitra et al, J. A mixed heteroatomic PNP ligand was prepared by reacting amine with phosphine chloride R 2 PClas disclosed in the theses: The ether extract was filtered in a solution of 50 ml of ethanol and 8.

First, mg 2. Finally, the colorless glossy solid was recrystallized using 60 mi of anhydrous. Asymmetric synthesis catalyzed by transition metal complexes with cyclic chiral phosphine ligands. Here, examples of the heteroatom ligand, which is used for an ethylene tetramerization catalyst, may include phenyl 2 PN isopropyl P phenyl 2 and the like.

The mixed solution was slowly heated to room temperature and then stirred for 30 minutes. 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. Further, it was found that the total weight of the reaction mixture, determined through GC, was 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.

Organometallic complexes of scandium and yttrium supported by a bulky salicylaldimine ligand. Tetramerization of ethylene using CrChftefrahvdrofuranK R.