88results about How to "High oligomerization reactivity" patented technology

The invention provides an ethylene oligomerization catalyst, which comprises Zr(OBu)Cl3, SiClx-1R4-x(OBu), BuOH and SiClxR4-x in a mole ratio of 1:(0.5-5.0):(0-5.0):(0-20), wherein Bu is butyl; R is alkyl of C1 to C4 or aryl of C6 to C8; and x is an integer from 1 to 4. The catalyst has high reaction activity in an ethylene oligomerization reaction, a plurality of long chain hydrocarbons of C12 to C20 exist in an oligomerization product and the yield of alpha-olefin is high.

The invention discloses a method for oligomerization of ethylene. The ethylene is subjected to oligomerization in a reaction system containing a primary catalyst, an aluminum-containing cocatalyst, water and an organic solvent, wherein the primary catalyst is a complex of 2-acetyl-1,10-phenanthroline (2,6-diisopropylanil)FeCl2, the formula (I) of the complex is as shown in the specification, the organic solvent is the alpha-olefin of Cn (n is more than 4 and less than or equal to 10), and in the chemical formula, R1-R5 are independently selected from hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitryl. The method disclosed by the invention has the advantages that the technical prejudice can be overcome, the process for oligomerization of ethylene can be optimized, the ethylene has high oligomerization activity, the oligomerization of ethylene can be initiated rapidly and operated stably and is hypo-toxic and environment-friendly, the catalytic effect and the production cost can be comprehensively considered and well balanced and the oligomerization cost of ethylene can be reduced greatly. In addition, the method disclosed by the invention is highly practical and has a broad industrial prospect.

The invention discloses a load-type olefin oligomerization catalyst, which comprises a complex loaded on a medium-pore aluminum silica material and having an expression shown as formula (I). The catalyst comprises 0.1 to 5.0 mass percent of nickel; in the formula (I), R is selected from hydrogen, C1 to C12 alkyl, C1 to C6 alkoxy or nitryl, X is halogen or acetate moiety, and n is 1 or 2; themedium-pore aluminum silica material has a pseudo-boehmite phase structure, and comprises the anhydrous chemical composition based on the mass of oxide of (0-0.3)Na2O.(40-90)Al2O3.(10-60)SiO2, the specific surface area of the medium-pore aluminum silica material is between 200 and 400m<2> / g, the pore volume is between 0.5 and 2.0 ml / g, the average aperture is between 8 and 20nm and the most probable aperture is between 5 and 15nm. The catalyst is used for olefin oligomerization and has higher reaction activity; and oligomerization products have wider distribution range without generating polymers.

The invention discloses an oligomerization method of ethylene. The ethylene carries out oligomerization reactions in a reaction system composed of a main catalyst, an aluminum-containing co-catalyst, water and an organic solvent; wherein the main catalyst is chlorinated 2-n-butyryl-1,10-phenanthroline amine-Fe (II) represented by the formula (I), the organic solvent is alpha-alkene with n carbons (4<n<=10), and in the formula (I), and the R1, R2, R3, R4, and R5 individually represent a hydrogen atom, an alkyl group with a carbon number of 1 to 6, a halogen atom, an alkyloxy group with a carbon number of 1 to 6, or a nitro group. The provided oligomerization method overcomes the technical bias, and optimizes the oligomerization technology. In the provided method, the oligomerization activity is high, thus the ethylene oligomerization reactions can be triggered rapidly, the operation of the technology is stable, the method is environment-friendly, the toxicity is greatly reduced, the catalytic effect and cost are well balanced, the provided method is very practical and greatly reduces the ethylene oligomerization cost, the catalytic effect and production cost are taken into account as a whole, and the industrialization prospect of the oligomerization method is wide.

The invention discloses a catalyst composition for an ethylene oligomerization reaction process. The catalyst composition contains a main catalyst represented by a formula I shown in the description, i.e., a chlorinated 2,6-di(2-benzimidazoyl)pyridine chromium (III) complex, an aluminiferous cocatalyst, water and an organic solvent. According to the catalyst composition, the catalyst composition disclosed by the invention is applied to the ethylene oligomerization reaction process and has very high oligomerization reaction activity and high alpha-olefin selectivity, and the oligomerization reaction is high in initiating speed, stable in operation and good in repeatability; even if the Al / Cr ratio is low, the catalyst composition has very good oligomerization reaction activity; and thus, the technical prejudice of those skilled in the art are overcome, an unexpected technical effect is achieved, and the catalysis effect and the cost are better balanced, so that the cost of ethylene oligomerization reaction is reduced greatly, the practicability is high, and the industrialization prospect is broad.

The invention discloses a catalyst composition for an ethylene oligomerization reaction technology and an application of the catalyst composition. The composition comprises a main catalyst, namely a chlorination substituted-2-benzoyl-1,10-phenanthroline poly-2,6-diethylaniline ferrum (II) complex shown as formula (I) as shown in the specification, an aluminiferous promoter and tert-butyl hydroperoxide. When the catalyst composition is used for the ethylene oligomerization reaction technology, the catalyst composition has very high oligomerization reactivity and high alpha-olefin selectivity; an oligomerization reaction is initiated rapidly, runs steadily, and is good in repeatability; even at a low aluminum / ferrum ratio, the catalyst composition has very good oligomerization reactivity; technical prejudice of those skilled in the art is overcome; unexpected technical effects are obtained; a catalytical effect and cost are balanced better; the cost of the ethylene oligomerization reaction is greatly lowered; and the catalyst composition has strong practicability and wide industrialization prospects.