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MgCl_2-SiO_2复合载体Ti系催化剂的制备及其催化乙烯/1-己烯共聚 被引量:11

Preparation and Characterization of TiCl_4/MgCl_2-SiO_2 Di-Support Catalyst System for Copolymerization of Ethylene with 1-Hexene
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摘要 在SiO2载体中引入分子状态的MgCl2后再负载TiCl4,制备了高活性的用于乙烯与1-己烯淤浆共聚的双载体Ziegler-Natta催化剂TiCl4/SiO2-MgCl2。催化剂的最佳制备条件:n(TiCl4)∶n(MgCl2)=10,滴加TiCl4温度为-25℃,n(C2H5OH)∶n(MgCl2)=2.4,m(SiO2)∶m(MgCl2)=1。用激光粒度分析仪、SEM和WAXD等手段对催化剂的粒径分布、颗粒形态和结晶情况进行表征的结果显示,催化剂的粒径在20~45μm之间,较均匀;且颗粒形态呈球形。当催化剂中Ti的质量分数为5.1%时,该催化剂可高效催化乙烯与1-己烯进行淤浆共聚,催化效率达1.59kg/g,乙烯-1-己烯共聚物的数均相对分子质量为3.1×104g/mol,相对分子质量分布为16.3,呈宽分布。 A novel di-support Ziegler-Natta catalyst TiCl4/SiO2-MgCl2 with high activity was prepared and used in copolymerization of ethylene with 1-hexene. The optimum catalyst preparation conditions were: n (TiCl4) : n (MgCl2) 10, adding TiCl4 temperature - 25℃, n ( C2H5OH) : n(MgCl2) 2.4 and m (SiO2 ) : m (MgCl2 ) 1. The particle shape, size distribution and crystalline morphology of the catalyst were determined by means of laser granulometer, SEM and WAXD. The results showed that the catalyst particles were spherical with the 20 -45 um particle diameter. When mass fraction of Ti in the catalyst was 5.1%, the catalyst could effectively catalyze the copolymerization. The catalytic efficiency was 1. 59 kg/g, number-average relative molecular mass of the obtained ethylene-1-hexene copolymer was 3.1 ×10 4 g/mol and its relative molecular mass distribution was 16.3.
出处 《石油化工》 CAS CSCD 北大核心 2010年第7期744-749,共6页 Petrochemical Technology
基金 中国石油风险创新基金项目(07-06D01-04-04-06) 北京市自然科学基金资助项目(2102036)
关键词 双载体Ziegler—Natta催化剂 烯烃聚合 淤浆共聚 乙烯 1-己烯 di-support Ziegler-Natta catalyst olefin polymerization slurry copolymerization ethylene 1-hexene
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参考文献17

  • 1姚晖,肖士镜,陆宏兰.Et(Ind)_2ZrCl_2/MAO和(Ind)_2ZrCl_2/MAO对乙烯/α-烯烃共聚合比较研究[J].合成树脂及塑料,1998,15(1):6-9. 被引量:5
  • 2Huang Jiling, Lian Bing, Qian Yanlong, et al. Syntheses of Titanium( IV ) Complexes with Mono-Cp and Schiff Base Ligands and Their Catalytic Activities for Ethylene Polymerization and Ethylene/l-Hexene Copolymerization. Macromolecules, 2002, 35 (13) : 4 871 -4 874.
  • 3Wu Jiqian, Pan Li, Li Yanguo, et al. Synthesis, Structural Characterization, and Olefin Polymerization Behavior of Vanadium ( Ⅲ ) Complexes Bearing Tridentate Schiff Base Ligands. Organometallics, 2009, 28(6) : 1 817 - 1 825.
  • 4Kenichi Kakinuki, Michiya Fujiki, Kotohiro Nomura. Copolymerization of Ethylene with a-Olefins Containing Various Substituents Catalyzed by Half-Titanocenes: Factors Affecting the Monomer Reactivities. Macromolecules, 2009, 42 ( 13 ) : 4 585 - 4 595.
  • 5Nomura Kotohiro, Oya Keima, Komatsu Takashi, et al. Effect of the Cyclopentadienyl Fragment on Monomer Reactivities and Monomer Sequence Distributions in Ethylene/a-Olefin Copolymerization by a Nonbridged ( Cyclopentadienyl ) ( Aryloxy ) Titanium ( Ⅳ ) Complex-MAO Catalyst System. Macromolecules, 2000, 33 ( 9 ) : 3 187 -3 189.
  • 6Ma Lifu, Sheng Yaping, Huang Qigu, et al. A Kind of Novel Nonmetallocene Catalysts for Ethylene Polymerizaiton. J Polym Sci: Part A: Polym Chem, 2008, 46(1): 33 -37.
  • 7Ma Lifu, Wang Hongli, Yi Jianjun, et al. Copolymerization of Ethylene with 1-Hexene Promoted by Novel Multi-Chelated Non- Metallocene Complexes with Imine Bridged Imidazole Ligand. J Polym Sci, Part A: Polym Chem, 2010, 48(2) : 417 -424.
  • 8Jin Suk Chung, Han Seock Cho, Young Gwan Ko, et al. Preparation of the Ziegler-Natta/Metallocene Hybrid Catalysts on SiO2/ MgCl2 Bisupport and Ethylene Polymerization. J Mol Catal A: Chem, 1999, 144(1) : 61 -69.
  • 9王路海,张宁宁,任合刚,张瑞,刘宾元,闫卫东.氯化镁/二氧化硅复合载体型Z-N催化剂的乙烯聚合性能[J].精细石油化工,2009,26(2):52-55. 被引量:6
  • 10中国石油化工股份有限公司北京化工研究院.一种用于乙烯聚合或共聚合的催化剂及其制备方法.中国,CN03119634.9.2003.

二级参考文献34

  • 1赵海英,王喆,李伟,郑国彤,王焕,肖士镜.一种复合载体丙烯聚合催化剂的研究[J].高分子通报,2005(1):77-81. 被引量:7
  • 2张学全,陈辉,黄葆同,杨永然,姜明,王展望,张俊杰.MgCl_2·EB/TiCl_4高效载体催化剂的乙烯/1-丁烯共聚反应研究[J].石油化工,1994,23(5):286-289. 被引量:4
  • 3郭子方,张敬梅,陈伟,周俊领,杨红旭.新型高效淤浆工艺聚乙烯催化剂的制备及其催化性能[J].石油化工,2005,34(9):840-843. 被引量:39
  • 4Hu Youliang, Chein J C W. Superactive and stereospecific catalyst Ⅰ. Structure and productivity[J]. J Polym Sci Part A: Polym Chem, 1988, 26:2003-2018
  • 5Kratovchila J, Shiono T, Soga K. Propene polymerization with the one-phase catalysts SiO2/TiCl4/Al(CH2CH(CH3 )2 )[J]. Macromol Rapid Commun, 1993,14:85-91
  • 6Lu Honglan, Xiao Shijing. Structure and behavior of SiO2/ MgCl2 bisupported Ziegler - Natta catalysts for olefin polymerization[J]. Makromol Chem, 1993,194 : 421-429
  • 7Pasquet V, Spitz R. Preparation of bisupported catalysts for ethylene polymerization [J]. Makromol Chem, 1990, 191: 3087-3092
  • 8Wang Jianguo, Pang Deren, Cheng Xiaotan, et al. Factors affecting the role of SiO2 in MgCl2-supported Ziegler Natta copolymerization catalysts[J]. Die Makromol Chem, 1993, 194: 211-221
  • 9Zohuri G H, Azimfar F, Jamjah R, et al. Polymerization of propylene using the high-activity Ziegler-Natta catalyst system SiO2/MgCl2 ( ethoxide type )/TiCl4/Di-n-butyl phthalate/triethylaluminum/dimethoxy methyl cyclohexyl silane[J]. J Appl Polym Sci, 2003, 89:1177-1181
  • 10Clas S D, Heyding R D, McFadding D C, et al. Crystallinties of copolymers of ethylene and 1-alkene[J]. J Polym Sci, Polym Phys Ed, 1988,26:1271-1286

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