Chromium compound, catalyst system including the same, and method for trimerizing ethylene using the catalyst system

Patent metadata

Field	Value
Publication number	US-2020039897-A1
Application number	US-201916548185-A
Country	US
Kind code	A1
Filing date	Aug 22, 2019
Priority date	Mar 5, 2014
Publication date	Feb 6, 2020
Grant date	—

Abstract

Disclosed herein are a chromium compound represented by Formula 1a or 1c and a catalyst system including the same, exhibiting superior catalytic activity in an olefin trimerization reaction:
[{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 } 2 Cr(OH)]  [Formula 1a]

[{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 } 2 Cr(OH)] 4 .2H 2 O.  [Formula 1c]

First claim

1 . A chromium compound represented by Formula 1a:
{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 } 2 Cr(OH)  [Formula 1a]

2 . A chromium compound represented by Formula 1c:
[{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 } 2 Cr(OH)] 4 .2H 2 O.  [Formula 1c]

3 . The chromium compound of claim 2 prepared by the reaction of CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 Na and CrCl 3 in the two phases composed of water and hydrocarbon solvents.

4 . The chromium compound of claim 2 having IR spectrum of FIG. 1 .

5 . A method of preparing the chromium compound represented by Formula 1c, comprising reacting a trivalent chromium salt compound represented by Formula 6 with a carboxylate alkali metal salt represented by Formula 7 in the two phases composed of water and hydrocarbon solvents:
[{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 } 2 Cr(OH)] 4 .2H 2 O  [Formula 1c]
Cr(X 1 ) 3   [Formula 6]

wherein X 1 is halogen atom, a nitrate ion (NO 3 ), or a perchlorate ion (ClO 4 )
{CH 3 (CH 2 ) 3 CH(CH 2 CH 3 )CO 2 }M  [Formula 7]

wherein M is sodium (Na), potassium (K) or lithium (Li).

6 . The method of preparing the chromium compound of claim 5 , wherein X 1 in Formula 6 is Cl and M in Formula 7 is Na.

7 . The method of preparing the chromium compound of claim 5 , wherein the hydrocarbon solvent is C 4 to C 20 aliphatic hydrocarbon solvent, a C 6 to C 20 aromatic hydrocarbon solvent or a mixture thereof.

Assignees

• Univ Ajou Ind Academic Coop Found

Inventors

• Lee Bun Yeoul
• Jeon Jong Yeob
• Park Dong Sik

Classifications

• B01J31/2265

  Carbenes or carbynes, i.e.(image) · CPC title

• C07F11/00

  Compounds containing elements of Groups 6 or 16 of the Periodic Table · CPC title

• B01J31/12

  containing organo-metallic compounds or metal hydrides · CPC title

• B01J2231/12

  Olefin polymerisation or copolymerisation · CPC title

• B01J31/181

  Cyclic ligands, including e.g. non-condensed polycyclic ligands, comprising at least one complexing nitrogen atom as ring member, e.g. pyridine · CPC title