引用本文:
Dong-ho LEE, Kwang-soo KIM. Propylene Polymerization by TiCl4 Supported on Mg(OEt)2 Activating with Ethanol/CO2 System[J]. 应用化学,
2001, 18(5): 310-315.
Citation: Dong-ho LEE, Kwang-soo KIM. Propylene Polymerization by TiCl4 Supported on Mg(OEt)2 Activating with Ethanol/CO2 System[J]. Chinese Journal of Applied Chemistry, 2001, 18(5): 310-315.
Citation: Dong-ho LEE, Kwang-soo KIM. Propylene Polymerization by TiCl4 Supported on Mg(OEt)2 Activating with Ethanol/CO2 System[J]. Chinese Journal of Applied Chemistry, 2001, 18(5): 310-315.
Propylene Polymerization by TiCl4 Supported on Mg(OEt)2 Activating with Ethanol/CO2 System
摘要:
In the preparation of catalyst for propylene polymerization, the Mg(OEt)2 support was activated with ethanol/CO2 system followed by solidification, and treated with TiCl4 in the presence of ethylbenzoate as an internal donor (ID). The chemical compositions of the activated support and the prepared catalyst were examined in detail. During the dissolution of Mg(OEt)2 support in ethanol medium with CO2 bubbling, the structure of support changed to magnesium hydrocarbyl carbonate, (CH3CH2O)2-x Mg(O(C=O)OCH2CH3)x (x=1,2). The content of carbonated CO2 in the activated support was dependent on the heat treatment in the solidification of support. In the preparation procedure of polymerization catalyst, the activated support was treated with TiCl4 so that the structure of support was converted to MgCl2 with the incorporation of ID. The polymerization behavior of the prepared catalyst was also studied in the presence of phenyltriethoxysilane as an external donor.
English
Propylene Polymerization by TiCl4 Supported on Mg(OEt)2 Activating with Ethanol/CO2 System
Abstract:
In the preparation of catalyst for propylene polymerization, the Mg(OEt)2 support was activated with ethanol/CO2 system followed by solidification, and treated with TiCl4 in the presence of ethylbenzoate as an internal donor (ID). The chemical compositions of the activated support and the prepared catalyst were examined in detail. During the dissolution of Mg(OEt)2 support in ethanol medium with CO2 bubbling, the structure of support changed to magnesium hydrocarbyl carbonate, (CH3CH2O)2-x Mg(O(C=O)OCH2CH3)x (x=1,2). The content of carbonated CO2 in the activated support was dependent on the heat treatment in the solidification of support. In the preparation procedure of polymerization catalyst, the activated support was treated with TiCl4 so that the structure of support was converted to MgCl2 with the incorporation of ID. The polymerization behavior of the prepared catalyst was also studied in the presence of phenyltriethoxysilane as an external donor.
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Key words:
- propylene polymerization
- / TiCl4 supported catalyst
- / Mg(OEt)2
- / activation
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