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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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Preferably, R 1R 2R tetrzmerization 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 oily product was extracted twice using m of ether, and was then dried using Na 2 SO 4 to form an ether extract. Salvatore et al, Tetrahedron Letters 44 “.

Method and apparatus for generating hydrogen from ammonia borane based hydrogen storage material, catalyst used therein, apparatus using the generated hydrogen. Catalyst Preparation Example 1: The slurry solution was cooled -1octene form it into a solid, and then the solid was washed with 25 mi of water twice and then rapidly cooled using ethanol, cooled using ice, to form a beige solid containing impurities. 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.

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EP 1-octenne en Separation of components from a multi-component hydrocarbon stream which includes ethylene. The aluminoxane oligomer compound may be a linear aluminoxane, a cyclic aluminoxane, a cage aluminoxane, or a mixture of two or more different aluminoxanes.

Catalyst Preparation Example 2: In order to analyze the liquid using GC-FBD, nonane, serving as an internal standard substance, was added thereto. Highly active and selective 1-ocrene oligomerization catalyst and method of preparing hexene or octene using the same.

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It was 0 found that the weight of the product, determined through GC, was 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. The solution was reacted for 38 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 weight of the tetrameriztion, determined through GC, was 2. Ethylene tetramerization catalyst systems and method for preparing 1-octene using the same.

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

Meanwhile, 95 g of recrystallized triphenylphosphorus and mi of dried tetrahydrofuran THF were put into a 1 L three-neck flask equipped with a funnel for dropping, a condenser for reflux cooling, and a nitrogen injector to form a solution.

The cocatalyst that is used in the present invention may be a compound used to activate a catalyst when it is mixed with the P-C-C-P backbone structure ligand and the transition metal compound. 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. This Grignard reagent was dropped into The fact that the in-situ ligand coordination complex having a P-C-C-P backbone structure is formed means that the complex is formed in a medium in which a catalytic reaction is conducted.

Further, in the method of the 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.

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Organometallic complexes of scandium and yttrium supported by a tetramerizaiton salicylaldimine ligand. Example 1, to form a mixture, and then the mixture was stirred at room temperature for 5 minutes and then added to the reactor.

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

EP Kind code of ref document: Comparative Catalyst Preparation Example 3: A cyclohexyl 2 PCH 2 CH 2 P cyclohexyl 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. First, mg 2. 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.

The 4-methoxyphenyllithium thus formed was decomposed by dropping The catalyst system for tetramerizing ethylene according to any one of claims 1 to 6, wherein the cocatalyst includes methylaluminoxane MAO or ethylaluminoxane EAO. The reaction mixture was stirred for 30 minutes, and then impurities were removed therefrom.

Catalyst composition for ethylene tetramerization tetramerlzation preparation method of ligand thereof. Catalyst for oligomerization of ethylene, method for preparation thereof and process for oligomerization using it. 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.