𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Morphology control of a MgCl2-supported Ziegler-Natta catalyst by the recrystallization method

✍ Scribed by Jin Suk Chung; In Kyu Song; Wha Young Lee; Hong Man Park

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
640 KB
Volume
196
Category
Article
ISSN
1022-1352

No coin nor oath required. For personal study only.

✦ Synopsis

MgCl, supports were prepared by the recrystallization method with variation of agitation speed and MgCl, concentration of the MgC1,-methanol-decane mixture. It was found that the particle size of MgCl, and MgCl,/TiCl, could be controlled by changing the MgCl, concentration in a methanol droplet or by changing the size of the methanol droplets. The particle size of the supports and catalysts increased with decreasing speed of agitation and with increasing MgC1, content. All the prepared supports and catalysts showed a good spherical morphology.

📜 SIMILAR VOLUMES

Polymerization of ethylene and ethylene/
Polymerization of ethylene and ethylene/1-hexene over Ziegler–Natta/metallocene hybrid catalysts supported on MgCl2 prepared by a recrystallization method
✍ Han Seock Cho; Jin Suk Chung; Jae Hyuck Han; Young Gwan Ko; Wha Young Lee 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 216 KB 👁 2 views

MgCl 2 for use as a catalyst support was prepared by dissolution in methanol and recrystallization in n-decane, followed by vacuum-drying at 2,000 rpm. The prepared support was modified by treatment with alkylaluminum compounds. The activity profile of ethylene over the supported catalysts persisted

Morphological study of spherical MgCl2.n
Morphological study of spherical MgCl2.nEtOH supported TiCl4 Ziegler-Natta catalyst for polymerization of ethylene
✍ R. Jamjah; G. H. Zohuri; J. Vaezi; S. Ahmadjo; M. Nekomanesh; M. Pouryari 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 602 KB

## Abstract Spherical MgCl~2~·nEtOH was prepared by adducting ethanol to MgCl~2~ using melt quenching method. Effect of molar ratio of [EtOH]/[MgCl~2~] = 2.8–3.05 on the morphology and particle size of the MgCl~2~·nEtOH were studied. The best adduct of spherical morphology was obtained when 2.9 mol

Liquid Pool Copolymerization of Propylen
Liquid Pool Copolymerization of Propylene/1-Butene with a MgCl2-Supported Ziegler-Natta Catalyst
✍ Fabricio M. Silva; Príamo A. Melo; Márcio Nele; Enrique L. Lima; José Carlos Pin 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 318 KB

## Abstract **Summary:** Liquid pool propylene/1‐butene copolymerizations were carried out in a batch reactor with a high activity Ziegler‐Natta catalyst system. Experimental runs were performed to evaluate the effect of the 1‐butene content on the crystallinity and melt temperature of the polymer

A Preparation Method for Well-Defined Cr
A Preparation Method for Well-Defined Crystallites of Mgcl2-Supported Ziegler-Natta Catalysts and their Observation by AFM and SEM
✍ Adelaida Andoni; John C. Chadwick; Hans J. W. Niemantsverdriet; Peter C. Thüne 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 430 KB

## Abstract A method for the preparation of well‐defined crystallites of MgCl~2~‐supported Ziegler‐Natta catalysts on Si wafers has been developed. This has been achieved by the spin‐coating of a MgCl~2~ solution onto a flat Si wafer, followed by controlled crystal growth to give well‐defined MgCl~