نتایج جستجو برای: natta catalysts

تعداد نتایج: 33137  

Journal: :polyolefins journal 2014
najmeh hadian shokoofeh hakim mehdi nekoomanesh-haghighi naeimeh bahri-laleh

primary mgcl2.3.3etoh adduct (pct1) was prepared by melt quenching method and then submitted into a programmed thermal dealcoholation project using a fluidized bed reactor. during thermal dealcoholation program, different mgcl2.netoh support samples with n= 3.0, 2.7, 2.4, and 2.1 were selected and named as pct2 to pct5, respectively. structural analysis of the support samples showed a significa...

Journal: Polyolefins Journal 2014

Primary MgCl2.3.3EtOH adduct (PCT1) was prepared by melt quenching method and then submitted into a programmed thermal dealcoholation project using a fluidized bed reactor. During thermal dealcoholation program, different MgCl2.nEtOH support samples with n= 3.0, 2.7, 2.4, and 2.1 were selected and named as PCT2 to PCT5, respectively. Structural analysis of the support samples showed a significa...

Journal: :Macromolecular Reaction Engineering 2021

Chemically recycled monomer feed streams from postconsumer plastic packaging waste are expected to contain impurities that act as catalyst poisons. This work investigates the impact of such on a commercial fourth-generation Ziegler–Natta system. A stream in two different procedures by adding representative poisons (pyridine and n-butanol) various quantities reactor setup is simulated. Measuring...

Journal: Polyolefins Journal 2016

Supported catalysts synthesized via the interaction of Mg(OEt)2 with TiCl4 in the presence or absence of an internal stereoregulating donor (di-n-butyl phthalate), with different solvents (chlorobenzene, n-undecane, n-heptane) at different titanation temperatures have been studied by a set of physicochemical methods. Data on the chemical composition, X-ray structure and pore structure of these ...

Journal: :polyolefins journal 0
valentina nikolaevna panchenko boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation ludmila viktorovna vorontsova boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation vladimir aleksandrovich zakharov boreskov institute of catalysis sb ras, prospekt akad. lavrentieva 5, 630090, novosibirsk, russian federation

the interaction of the external donor (propyltrimethoxysilane - ptms) with titanium-magnesium catalysts (tmcs) containing dibutylphthalate (dbp) as internal donor, which were prepared in different ways, was studied by chemical analysis and infrared diffuse reflectance spectroscopy (drifts). the chemical composition of the catalysts after their interaction with heptane solutions of ptms, ptms/al...

Journal: :Kobunshi 1983

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید