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Effect of textural characteristics of supported metallocenes on ethylene polymerization

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Abstract

Catalyst particle size is an important parameter in the polymer industry. A series of supports with different textural properties (silicas prepared by different routes), surface sites (alumino-silicate, silica-zirconia, magnesia-silica supports, and methylaluminoxane-modified silica) and crystallinity (amorphous, lamellar, and crystalline materials) were investigated in the sequential grafting reaction of two metallocene catalysts, Cp2ZrCl2 and (n-BuCp)2ZrCl2, in a 1:3 ratio. The catalyst systems were analyzed by Rutherford backscattering spectrometry, atomic force microscopy, small angle X-ray scattering, extended X-ray absorption fine structure spectroscopy, and nitrogen adsorption. All of the systems were shown to actively polymerize ethylene when methylaluminoxane was used as the cocatalyst. Experimental results are discussed in terms of the relationships between the radius of gyration of secondary particles and catalyst activity. A radius of gyration in the range of 8–9 nm was shown to be associated with higher catalyst activity.

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References

  1. Merkus HG (2009) Particle size measurements: fundamentals. Practice, Quality, Springer

    Google Scholar 

  2. Rodella CB, Kellermann G, Francisco MSP, Jordão MH, Zanchet D (2008) Ind Eng Chem Res 47:8612

    Article  CAS  Google Scholar 

  3. Yanwei Z, Yubao Z (2002) J Colloid Interface Sci 247:100

    Article  PubMed  Google Scholar 

  4. Bertin V, Bosch P, Del Angel G, Gomez R, Barbier J, Marecot P (1995) J Chim Phys et Phys Chim Biolog 92:120

    CAS  Google Scholar 

  5. Yu CF, Koh S, Leisch JE, Toney MF, Strasser P (2009) Faraday Disc 140:283

    Article  Google Scholar 

  6. Paredes JI, Martínez-Alonso A, Tascón JMD (2003) Micropor Mesopor Mater 65:93

    Article  CAS  Google Scholar 

  7. Occelli ML, Gould SAC (2004) Fluid catalytic cracking VI: preparation and characterization of catalysts, vol 149. Elsevier, Amsterdam, p 71

  8. Lee KH, Catani R, Miglio R, Wolf EE (1997) Catal Deact 111:463

    CAS  Google Scholar 

  9. Andoni A, Chadwick JC, Niemantsverdriet HJW, Thüne PC (2008) J Catal 257:81

    Article  CAS  Google Scholar 

  10. Chum PS, Swogger KW (2008) Prog Polym Sci 33:797

    Article  CAS  Google Scholar 

  11. Severn JR, Chadwick JC, Duchateau R, Friederichs N (2005) Chem Rev 103:4073

    Article  Google Scholar 

  12. Silveira F, Pires GP, Petry CF, Pozebon D, Stedile FC, Dos Santos JHZ, Rigacci A (2007) J Mol Catal A Chem 265:167

    Article  CAS  Google Scholar 

  13. Silveira F, Alves MCM, Stedile FC, Pergher SB, Rigacci A, Dos Santos JHZ (2009) J Mol Catal A Chem 298:40

    Article  CAS  Google Scholar 

  14. Silveira F, Petry CF, Pozebon D, Pergher SB, Detoni C, Stedile FC, Dos Santos JHZ (2007) Appl Catal A Gen 333:96

    Article  CAS  Google Scholar 

  15. Kim JM, Kwak LH, Jun S, Ryoo R (1995) J Phys Chem 99:16742

    Article  CAS  Google Scholar 

  16. Pergher SBC, Corma A, Fornés V (2003) Quim Nov 26:795

    CAS  Google Scholar 

  17. Corma A, Fornés V, Pergher SB, Maessen TLM, Buglass JG (1998) Nature 396:353

    Article  CAS  ADS  Google Scholar 

  18. Fonseca MG, Oliveira AS, Airoldi C (2001) J Colloid Interface Sci 240:533

    Article  CAS  PubMed  Google Scholar 

  19. Stedile FC, Dos Santos JHZ (1999) Phys Stat Sol 173:123

    Article  CAS  ADS  Google Scholar 

  20. Ressler T (1998) J Synch Rad 5:118

    Article  CAS  Google Scholar 

  21. Rehr JJ, Albers RC (2000) Rev Mod Phys 72:621

    Article  CAS  ADS  Google Scholar 

  22. Brinker CJ (2006) In: Bergna HE, Roberts WO (eds) Colloidal silica: fundamentals and applications. CRC press, Boca Raton, p 615

    Google Scholar 

  23. Zeleňák V, Badaničová M, Halamová D, Čejka J, Zukal A, Murafa N, Goerigk G (2008) Chem Eng J 144:336

    Article  Google Scholar 

  24. Harrison D, Couter IM, Wang S, Nistala S, Kuntz BA, Pingeon M, Tian J, Collins S (1998) J Mol Catal A Chem 128:65

    Article  CAS  Google Scholar 

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Acknowledgements

This work was partially financed by CNPq. The authors thank LNLS for measurements on the SAXS (Project SAXSS1-5296) and EXAFS beamlines (Project D04B XAFS1#5839). Mr. William Bretas Linares from SAMA is especially thanked for providing chrysotile samples.

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Authors and Affiliations

  1. Braskem S.A., III Pólo Petroquímico, Via Oeste, Lote 05, Triunfo, 95853-000, Brazil

    Fernando Silveira

  2. Instituto de Química, UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, 91509-900, Brazil

    Rodrigo Brambilla, Nadya Pesce da Silveira, Maria do Carmo Martins Alves, Fernanda C. Stedile & João Henrique Zimnoch dos Santos

  3. Departamento de Química, Universidade Regional Integrada do Alto Uruguai e das Missões (URI), Campus Erechim, CP 743, Erechim, 99700-000, Brazil

    Sibele B. C. Pergher

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  1. Fernando Silveira
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  2. Rodrigo Brambilla
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  3. Nadya Pesce da Silveira
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  4. Maria do Carmo Martins Alves
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  5. Fernanda C. Stedile
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  6. Sibele B. C. Pergher
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  7. João Henrique Zimnoch dos Santos
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Correspondence to João Henrique Zimnoch dos Santos.

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Silveira, F., Brambilla, R., da Silveira, N.P. et al. Effect of textural characteristics of supported metallocenes on ethylene polymerization. J Mater Sci 45, 1760–1768 (2010). https://doi.org/10.1007/s10853-009-4153-9

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  • DOI: https://doi.org/10.1007/s10853-009-4153-9

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