Influence of PMHS loading on the silica surface, on catalyst activity and on properties of resulting polymers

作者: Paula Palmeira Greco , Fernanda Chiarello Stedile , João Henrique Zimnoch dos Santos

DOI: 10.1016/S1381-1169(02)00626-X

关键词: Rutherford backscattering spectrometryPolymer chemistryX-ray photoelectron spectroscopyPolymethylhydrosiloxaneMethylaluminoxaneDiffuse reflectance infrared fourier transformChemistryChemical engineeringCatalysisPolyethyleneHeterogeneous catalysis

摘要: … on PMHS-modified silicas (PMHS=polymethylhydrosiloxane). The effect of the amount of the organosilane polymer on the metallocene grafted content was studied in loadings of PMHS …

参考文章(20)
A. V. Kiselev, V. I. Lygin, Infrared spectra of surface compounds Wiley : distributed by Halsted Press. ,(1975)
Tsuneji Sano, Progress and development of catalytic olefin polymerization Technology and Education Publishers. ,(2000)
Walter Kaminsky, Florian Renner, High melting polypropenes by silica‐supported zirconocene catalysts Die Makromolekulare Chemie, Rapid Communications. ,vol. 14, pp. 239- 243 ,(1993) , 10.1002/MARC.1993.030140404
M.L. Ferreira, P.P. Greco, J.H.Z. dos Santos, D.E. Damiani, A theoretical and experimental study about the effect of different organosilanes on immobilization of (nBuCp)2ZrCl2 on pre-treated SiO2 Journal of Molecular Catalysis A-chemical. ,vol. 172, pp. 97- 116 ,(2001) , 10.1016/S1381-1169(01)00129-7
Udo Stehling, Josef Diebold, Robin Kirsten, Werner Roell, Hans Herbert Brintzinger, Stephan Juengling, Rolf Muelhaupt, Franz Langhauser, ansa-Zirconocene Polymerization Catalysts with Anelated Ring Ligands - Effects on Catalytic Activity and Polymer Chain Length Organometallics. ,vol. 13, pp. 964- 970 ,(1994) , 10.1021/OM00015A033
James C. W. Chien, Bor-Ping Wang, Metallocene‐methylaluminoxane catalysts for olefin polymerization. V. Comparison of Cp2ZrCl2 and CpZrCl3 Journal of Polymer Science Part A. ,vol. 28, pp. 15- 38 ,(1990) , 10.1002/POLA.1990.080280102
F. Garbassi, L. Gila, A. Proto, XPS study of metallocene based catalysts for the polymerization of ethylene Journal of Molecular Catalysis A-chemical. ,vol. 101, pp. 199- 209 ,(1995) , 10.1016/1381-1169(95)00065-8
David Fischer, Stephan Jüngling, Rolf Mülhaupt, Donor‐ and acceptor‐modified metallocene‐based homogeneous Ziegler‐Natta catalysts Macromolecular Symposia. ,vol. 66, pp. 191- 202 ,(1993) , 10.1002/MASY.19930660117