乙烯聚合铝改性铬系催化剂研究进展
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摘要
综述国内外乙烯聚合铝改性铬系催化剂的研究现状、制备方法、性能以及对乙烯聚合性能的影响。铝改性铬系催化剂主要体现为采用氧化铝和磷酸铝作为载体,或使用烷基铝作为改性剂。改性后铬系催化剂的聚合活性和氢调敏感性明显提高,由其生成聚合物的相对分子质量分布变宽,耐环境应力开裂性能改善,加工性能优异。
The research status,preparation methods,properties of aluminum modified chromium catalyst for ethylene polymerization at home and abroad were reviewed. Aluminum modified chromium catalyst was mainly used in two aspects: one was that using alumina or aluminum phosphate as the carrier,the other was that taking alkyl aluminum as the catalyst modifier. After modification,the polymerization activity and hydrogen sensitivity of chromium catalysts was improved significantly. The polymer obtained over the catalyst had broader molecular weight distribution,better environmental stress cracking resistance and excellent processing properties.
The research status,preparation methods,properties of aluminum modified chromium catalyst for ethylene polymerization at home and abroad were reviewed. Aluminum modified chromium catalyst was mainly used in two aspects: one was that using alumina or aluminum phosphate as the carrier,the other was that taking alkyl aluminum as the catalyst modifier. After modification,the polymerization activity and hydrogen sensitivity of chromium catalysts was improved significantly. The polymer obtained over the catalyst had broader molecular weight distribution,better environmental stress cracking resistance and excellent processing properties.
引文
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[29]崔楠楠,王洪涛,周俊领,等.一种负载型铬系催化剂及其制备方法和应用:中国,CN103772540A[P].2014-05-07.
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[31]Liu Bing,Jie Suyun,Bu Zhiyang,et al.A MOF-supported chromium catalyst for ethylene polymerization through postsynthetic modification[J].Journal of Molecular Catalysis A:Chemical,2014,387:63-68.
[32]李留忠,达建文,隋国红.一种烯烃聚合用的负载型含铬催化剂及其制备方法:中国,CN1275577[P].2000-12-06.
[33]Varkeya Saji P,Lobo Raul F,Theopold Klaus H.Zeolite MCM-22 supported heterogeneous chromium catalyst for ethylene polymerization[J].Catalysis Letters,2003,88(3/4):227-229.
[34]吴俞翔,张海坤,董奇,等.S-2铬系催化剂催化乙烯与1-己烯共聚合[J].合成树脂及塑料,2010,27(2):1-4.Wu Yuxiang,Zhang Haikun,Dong Qi,et al.Ethylene and1-hexene copolymerization using S-2 Cr-based catalyst[J].China Synthetic Resin and Plastics,2010,27(2):1-4.
[2]任红,严婕,刘胜春.气相法铬系聚乙烯催化剂QCP-01的评价[J].塑料工业,1999,27(5):36-38.Ren Hong,Yan Jie,Liu Shengchun.Evaluation of chromium based PE catalyst QCP-01 by gas phase process[J].China Plastics Industry,1999,27(5):36-38.
[3]Eric Schwerdtfeger,Richard Buck,Max Mcdaniel.Reduction of Cr(Ⅵ)polymerization catalysts by non-olefinic hydrocarbons[J].Applied Catalysis A:General,2012,423-424:91-99.
[4]Weckhuysen B M,Schoonheydt R A.Olefin polymerization over supported chromium oxide catalysts[J].Catalysis Today,1999,51(2):215-221.
[5]Robert Meyers.Handbook of petrochemicals production processes[M].New York:Mc Graw-Hill Professional,2005.
[6]Mohamed I Zaki,Nasr E Fouad,Geoffrey C Bond,et al.Temperature-programmed reduction of calcined chromia-coated alumina and silica catalysts:probing chromium(Ⅵ)-oxygen species[J].Thermochimica Acta,1996,285(1):167-179.
[7]Bert M Weckhuysen,Israel E Wachs,Robert A Schoonheydt.Surface chemistry and spectroscopy of chromium in inorganic oxides[J].Chemical Reviews,1996,96(8):3327-3350.
[8]Antonio Iannibello,Sergio Marengo,Paolo Tittarelli,et al.Spectroscopic study of the structure of chromium(Ⅵ),molybdenum(Ⅵ)and tungsten(Ⅵ)oxospecies anchored on aluminium oxide[J].Journal of the Chemical Society,Faraday Transactions,1984,80(8):2209-2223.
[9]Bodart Philippe,Lonfils Nicodeme.Multimodal polyethylene obtained with multilayered chromium catalyst:US,20040029727[P].2004-02-12.
[10]张志传,李德宏,苏光,等.一种烯烃聚合催化剂及制备方法和应用:中国,CN101343336B[P].2011-02-16.
[11]Schmidt Stephen R,Chapman David M,Koranne Manoj M,et al.Catalyst on silica clad alumina support:US,8673806[P].2014-03-18.
[12]李留忠,严婕,达建文,等.铬系聚乙烯催化剂:中国,CN103159875A[P].2013-06-19.
[13]M·P·麦克丹尼尔,E·A·贝纳姆,S·J·西科拉,等.铬基聚合催化剂,其制备方法以及用其制备的聚合物:中国,CN1957003B[P].2011-07-06.
[14]Mcdaniel Max P,Smith Paul D,Norwood Donald D.Olefin polymers prepared by polymerization with treated alumina supported chromium:US,5401820[P].1995-03-28.
[15]Des Lauriers P J,Mc Daniel M P,Rohlfing D C,et al.A comparative study of multimodal vs.bimodal polyethylene pipe resins for PE-100 applications[J].Polymer Engineering&Science,2005,45(9):1203-1213.
[16]Mc Daniel M P,Jensen J D,Jayaratne K,et al.Tailor-made polymers via immobilization of alpha-olefin polymerization catalysts[M].Weinheim:Wiley-Vch Verlag Gmb H&Co.,2008.
[17]Mc Daniel M P,Benham E A,Martin S J,et al.Compositions that can produce polymers:US,6300271[P].2001-10-09.
[18]Ballard D G H Pi,Sigma Transition.Metal carbon compounds as catalysts for the polymerization of vinyl monomers and olefins[J].Advances in Catalysis,1973,23(1):263-325.
[19]Smith P D,Mc Daniel M P.Ethylene polymerization catalysts from supported organotransition metal complexes:Ⅰ.Pentadienyl derivatives of Ti,V,and Cr[J].Journal of Polymer Science Part A:Polymer Chemistry,1989,27(8):2695-2710.
[20]Mcdaniel Max P,Collins Kathy S,Benham Elizabeth A,et al.Polymers having low levels of long chain branching and methods of making the same:US,7112643[P].2006-09-26.
[21]Mcdaniel Max P,Collins Kathy S,Benham Elizabeth A,et al.Method of preparing active chromium/alumina catalysts via treatment with sulfate and polymer produced using chromium/alumina catalysts:JP,2011006714[P].2011-01-13.
[22]Mc Danie M P I,Johnson M M.A comparison of Cr/Si O2and Cr/Al PO4polymerization catalysts 2.Chain transfer[J].Macromolecules,1987,20(4):773-778.
[23]Mcdaniel Max P,Benham Elizabeth A,Wolfe Al R,et al.Olefin polymers,method of making,and use thereof:US,6867278[P].2005-03-15.
[24]Liu Shaoyou,Chao Zisheng.Synthesis of mesoporous chromium aluminophosphate(Cr Al PO)via solid state reaction at low temperature[J].Journal of Wuhan University of Technology-Mater Sci Ed,2012,27(2):337-345.
[25]Mcdaniel Max P,Benham Elizabeth A,Wolfe Al R,et al.烯烃聚合物、制造方法和其应用:中国,CN1745109[P].2006-03-08.
[26]Debras Guy.Titanated chromium/silica-aluminophosphate catalyst:US,6225253[P].2001-05-01.
[27]Paul J Des Lauriers,Chung Tso,Youlu Yu,et al.Long-chain branching in PE from Cr/aluminophosphate catalysts[J].Applied Catalysis A:General,2010,388(1/2):102-112.
[28]Xia Wei,Liu Boping,Fang Yuwei,et al.Unique polymerization kinetics obtained from simultaneous interaction of Phillips Cr(Ⅵ)Ox/Si O2catalyst with Al-alkyl cocatalyst and ethylene monomer[J].Journal of Molecular Catalysis A:Chemical,2006,256:301-308.
[29]崔楠楠,王洪涛,周俊领,等.一种负载型铬系催化剂及其制备方法和应用:中国,CN103772540A[P].2014-05-07.
[30]任合刚,王斯晗,张大伟,等.一种负载型钛铝改性的铬系催化剂及其制备:中国,CN104277157A[P].2015-01-14.
[31]Liu Bing,Jie Suyun,Bu Zhiyang,et al.A MOF-supported chromium catalyst for ethylene polymerization through postsynthetic modification[J].Journal of Molecular Catalysis A:Chemical,2014,387:63-68.
[32]李留忠,达建文,隋国红.一种烯烃聚合用的负载型含铬催化剂及其制备方法:中国,CN1275577[P].2000-12-06.
[33]Varkeya Saji P,Lobo Raul F,Theopold Klaus H.Zeolite MCM-22 supported heterogeneous chromium catalyst for ethylene polymerization[J].Catalysis Letters,2003,88(3/4):227-229.
[34]吴俞翔,张海坤,董奇,等.S-2铬系催化剂催化乙烯与1-己烯共聚合[J].合成树脂及塑料,2010,27(2):1-4.Wu Yuxiang,Zhang Haikun,Dong Qi,et al.Ethylene and1-hexene copolymerization using S-2 Cr-based catalyst[J].China Synthetic Resin and Plastics,2010,27(2):1-4.