High activity and good hydrogen response silica-supported Ziegler-Natta catalyst for ethylene polymerization
| Autor: | Chen-gang Cao, Yingnan Ning, Li-na Zhao, Hongxia Chen, Mingjian Luo, Guoliang Mao, Tao Jiang |
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| Rok vydání: | 2012 |
| Předmět: |
inorganic chemicals
Ethylene Polymers and Plastics organic chemicals General Chemical Engineering Organic Chemistry Dimethyldichlorosilane Polyethylene Catalysis chemistry.chemical_compound chemistry Polymerization Chemical engineering Fluidized bed Polymer chemistry Copolymer heterocyclic compounds Ziegler–Natta catalyst |
| Zdroj: | Chinese Journal of Polymer Science. 30:561-567 |
| ISSN: | 1439-6203 0256-7679 |
| DOI: | 10.1007/s10118-012-1141-3 |
| Popis: | A silica-supported Ziegler-Natta catalyst with dimethyldichlorosilane (DMDS) as modifier and small silica as support was successfully prepared and characterized. Results from pilot screen showed that the new catalyst exhibited higher catalytic activity, better hydrogen response ability and better copolymerization ability than the commercial M catalyst. Pilot screen in ethylene gas phase fluidized bed polymerization, the catalytic activity of the new catalyst was up to 8000 g PE/g cat, which was twice of that of the commercial M catalyst. The bulk density of polyethylene obtained with the new catalyst was 0.38 g/cm3. The new catalyst is suitable for condensed and super-condensed process in fluidized bed ethylene polymerization. |
| Databáze: | OpenAIRE |
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