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Spherical Magnesium-Supported Catalyst Particles

7 Catalysts Prepared with Grignard Reagent/TiCl with and without Silica [Pg.94]

Catalysts based on ethylmagnesium chloride in THF and TiCl were prepared in the presence and absence of silica [64]. The silica was a Davison (W. R. Grace) Commercial Grade 952 silica with an average particle size of 45 pm and was dried at 200°C. The silica was used as a template to control the particle size distribution of the catalyst precursor. [Pg.94]

Catalyst Prepared with Silica This catalyst was prepared in two steps. In the first step, ethylmagnesium chloride in THF (2.1 M) was added drop-wise to the silica, which was slurried in hexane and stirred rapidly while xmder reflux conditions. Next, the solvents were removed by distillation to provide a white free-flowing powder. In the second step, the white powder was slurried in heptane containing TiCl and the slurry was refluxed for 2 hr and then allowed to cool to room temperattue. The silica-supported catalyst was isolated by filtration, washed with excess hexane and dried again to obtain a free-flowing powder. [Pg.94]

Catalyst Prepared without Silica This catalyst was prepared by adding [Pg.94]


See other pages where Spherical Magnesium-Supported Catalyst Particles is mentioned: [Pg.93]    [Pg.93]    [Pg.204]    [Pg.69]    [Pg.1031]    [Pg.1031]    [Pg.3250]    [Pg.153]    [Pg.7430]    [Pg.662]    [Pg.54]    [Pg.505]    [Pg.399]   


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Catalyst particles

Magnesium catalyst

Magnesium particles

Magnesium supports

Particle sphericity

Spherical particles

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