METHOD FOR OBTAINING A CATALYST SOLUTION FOR THE SELECTIVE PRODUCTION OF 1-HEXENE Russian patent published in 2021 - IPC B01J31/14 B01J31/18 B01J23/26 B01J37/04 C07C2/32 

FIELD: biochemistry.

SUBSTANCE: invention relates to methods for producing a homogeneous catalyst for use in the production of linear alpha-olefin. The method includes: obtaining a solution of the first precatalyst by mixing a chromium source and a ligand in the first solvent, with the solution of the first precatalyst stored in the first container; obtaining a solution of the second precatalyst by mixing an organoaluminum compound and a modifier in the second solvent, while the solution of the second precatalyst is stored in a second container; and the simultaneous supply of the solution of the first precatalyst and the solution of the second precatalyst directly into the reaction container, the reaction container containing the third solvent, with the solution of the first precatalyst and the solution of the second precatalyst being separately and directly fed into the reaction container; and mixing of the solution of the first precatalyst and the solution of the second precatalyst being carried out using the feed rate of the hydrocarbon solvent. Another method involves: obtaining a solution of the first precatalyst by mixing a chromium source and a ligand in the first solvent, with the solution of the first precatalyst stored in the first container; obtaining a solution of the second precatalyst by mixing an organoaluminum compound and a modifier in the second solvent, with the solution of the second precatalyst being stored in a second container; and the simultaneous supply of the solution of the first precatalyst and the solution of the second precatalyst directly to the hydrocarbon solvent supplied upstream relative to the reaction tank, where mixing of the solution of the first precatalyst and the solution of the second precatalyst is carried out using the feed rate of the hydrocarbon solvent. The modifier is selected from ammonium or phosphonium salts of the type[H₄E]X, [H₃ER]X, [H₂ER₂]X, [HER₃]X, or [ER₄]X, or HX, or RX, wherein E = N or P, X = Cl, Br or I, а R = alkyl, cycloalkyl, acyl, aryl, alkenyl, alkynyl, or corresponding bridged di -, tri -, or semi-links, or ammonium or phosphonium salts based on cyclic amines, or a combination containing at least one of the above. The ligand has a general structure R₁R₂P-N(R₃)-P(R₄)-N(R₅)-H, wherein R₁, R₂, R₃, R₄ and R₅ are independently selected from halogen, amino, trimethylsilyl, C₁-C₁₀-alkyl, substituted by C₁-C₁₀-alkyl, aryl and the substituted aryl.

EFFECT: present invention eliminates the need for preliminary mixing of solutions in a separate mixer, which results in beneficial effects.

15 cl, 2 dwg