عنوان
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Catalytic polymerization of ethylene by non-metallocene Zirconium(IV) calix[4] pyrrole complexes
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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Catalytic polymerization,f ethylene , non-metallocene Zirconium(IV), calix[4] pyrrole complexes
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چکیده
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Some zirconium compounds containing chelating diamido dipyrrole or tetra-amido tetra-pyrrole ligands were synthesized and used as polymerization catalyst with high polymerization activity of ethylene at 40 C and 1 bar, in presence of MAO or BðC6F5Þ3 as co-catalyst. The maximum catalytic activity reached 1100 Kg/mol bar h for ethylene polymerization by Zr2(octa-phenyl calix[4]pyrrolidine)Cl4. These results reveal that half-zirconocene like complexes including four terminal chlorine and one calix[4]pyrrolidine in middle with both p and r-interaction have the highest ethylene polymerization turnover
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پژوهشگران
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سعید رعیتی (نفر دوم)، سجاد محبی (نفر اول)
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