Počet záznamů: 1
RuCl2(p-cymene)(PCy3) immobilized on mesoporous molecular sieves as catalyst for ROMP of norbornene and its derivatives
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SYSNO ASEP 0349038 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název RuCl2(p-cymene)(PCy3) immobilized on mesoporous molecular sieves as catalyst for ROMP of norbornene and its derivatives Tvůrce(i) Balcar, Hynek (UFCH-W) RID, ORCID
Bek, David (UFCH-W)
Sedláček, D. (CZ)
Dědeček, Jiří (UFCH-W) RID, ORCID
Bastl, Zdeněk (UFCH-W) RID, ORCID
Lamač, Martin (UFCH-W) RID, ORCID, SAIZdroj.dok. Journal of Molecular Catalysis A-Chemical. - : Elsevier - ISSN 1381-1169
Roč. 332, 1-2 (2010), s. 19-24Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Ru complex ; heterogeneous catalyst ; ROMP Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP KAN100400701 GA AV ČR - Akademie věd IAA400400805 GA AV ČR - Akademie věd GD203/08/H032 GA ČR - Grantová agentura ČR CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000284674300004 DOI 10.1016/j.molcata.2010.08.012 Anotace New heterogeneous catalysts for ring opening metathesis polymerization (ROMP) have been prepared by immobilization of RuCl2(p-cymene)(PCy3) (Cy = cyclohexyl) on silica and siliceous mesoporous molecular sieves SBA-15 and MCM-41. Activity of these catalysts was investigated in ROMP of norbornene (NBE) and its derivatives (dicyclopentadiene, 5-norbornene-2-yl acetate). High molecular weight polymers (Mw up to 400 000) were prepared in yields up to 80% using catalysts based on mesoporous sieves. In contrast, with catalyst based on conventional silica the yield did not exceed 28% (ROMP of NBE). Filtration test proved that the catalytic activity was bound to the solid phase. Catalysts could be easily separated from the reaction mixture in contrast to the corresponding homogeneous system. Therefore, polymers with reduced amounts of catalyst residues were obtained. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2011
Počet záznamů: 1