Results 81 to 90 of about 856 (180)

Uma revisão sobre polimerização de olefinas usando catalisadores Ziegler-Natta heterogêneos A survey on olefins polymerization using heterogeneous Ziegler-Natta catalysts

open access: yesPolímeros, 2011
A produção em larga escala de materiais poliméricos de elevado interesse industrial, provenientes da polimerização estereoespecífica de olefinas, tornou-se possível depois do advento dos catalisadores Ziegler-Natta.
Fabricio Machado, José Carlos Pinto
doaj  

Alkaline-earth-promoted Pd–Ag/Al2O3 for selective acetylene hydrogenation: green-oil mitigation, ethylene selectivity, and implications for hydrogen spillover

open access: yesScientific Reports
Removing trace acetylene from ethylene streams is critical to protect Ziegler–Natta polymerization. Eggshell Pd–Ag/θ-Al2O3 spheres (0.03 wt% Pd, 0.13 wt% Ag) were promoted with 1 wt% alkaline-earth additives to suppress green oil and improve ethylene ...
Farnaz Rahbar Shamskar   +2 more
doaj   +1 more source

Coordination copolymerization monitoring of ethylene and alfa-olefins by in-line Raman spectroscopy. [PDF]

open access: yesRSC Adv, 2022
Comparán-Padilla VE   +6 more
europepmc   +1 more source

Organische Trägermaterialien für Ziegler-Natta-Katalysatoren

open access: yes, 2017
Ziel dieser Arbeit war die Entwicklung eines auf einem organischen Trägermaterial basierenden Ziegler-Natta-Katalysatorsystems, welches die erforderliche Fragmentierbarkeit in möglichst kleine Fragmente aufweist. Hierfür sah das Konzept dieser Arbeit eine direkte Bildung der aktiven Zentren auf fein dispergierten, Hydroxy-funktionalisierten Polystyrol ...
openaire   +3 more sources

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