Ethylene oligomerization catalyst composition and use thereof

• Main Authors: LI YULONG, SUN SHUKUN, WANG YALI, WANG GUIZHI, YU XIANGMIN, XING LIHUA, WANG SIHAN, HUANG FULING, LI JIANZHONG, WANG GANG, CHEN QIAN, ZHANG YAN, QU JIABO, WANG XIUHUI, ZHANG BAOJUN, ZHANG DESHUN, HAN XUEMEI
• Format: Patent
• Language: Chinese; English
• Published: 10.06.2009
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a catalyst composition for performing ethylene oligomerization and application thereof. The catalyst composition comprises a chromium compound a, P and N-containing ligand b, an activator c, an accelerant d and P-containing ligand e, wherein the mol ratio of the a to the b to the c to the d to the e is 1:0.5-10:50-3,000:0.5-10:0.5-10. The catalyst is used for performing ethylene oligomerization to prepare 1-octene, wherein the five compositions of the a, the b, the c, the d and the e are mixed for 10 minutes in the presence of nitrogen and added into a reaction kettle, or are directly added into the reaction kettle; and ethylene is introduced into the reaction kettle to perform oligomerization reaction, wherein the reaction temperature is between 30 and 200 DEG C,the reaction pressure is between 0.5 and 20.0 MPa, and the reaction time is between 0.1 and 2 hours. The catalyst composition has the characteristics of high activity of the catalyst, high selectivity of the 1-octene, and so