| Cr/MCM-41催化剂上的乙烯聚合行为 |
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| 引用本文： | 何静,李峰,孙鹏,段雪.Cr/MCM-41催化剂上的乙烯聚合行为[J].催化学报,1998(6). |
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| 作者姓名： | 何静 李峰 孙鹏 段雪 |
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| 作者单位： | 北京化工大学应用化学系 |
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| 摘 要： | 以纯硅ＭＣＭ４１为载体，负载Ｐｈｉｌｉｐｓ烯烃聚合催化剂活性组分Ｃｒ．ＸＲＤ及ＴＥＭ表征结果表明，所得到的Ｃｒ／ＭＣＭ４１催化剂具有良好的晶体结构和较理想的长程有序一维孔道．ＦＴＩＲ和Ｒａｍａｎ光谱表征结果表明，Ｃｒ／ＭＣＭ４１上不仅可发生乙烯聚合过程，而且形成的聚乙烯以结晶和无定形两种形态存在．乙烯聚合活性不仅与反应参数有关，而且与Ｃｒ的负载量密切相关．用于乙烯聚合后，Ｃｒ／ＭＣＭ４１催化剂仍保持其特征的晶体结构和一维孔道结构．
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| 关 键 词： | 铬，MCM-41，催化剂表征，乙烯，聚合，聚乙烯 |
POLYMERIZATION BEHAVIOR OF ETHYLENE ON Cr/MCM 41 |
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| He Jing,Li Feng,Sun Peng,Duan Xue.POLYMERIZATION BEHAVIOR OF ETHYLENE ON Cr/MCM 41[J].Chinese Journal of Catalysis,1998(6). |
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| Authors: | He Jing Li Feng Sun Peng Duan Xue |
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| Abstract: | Chromium, the active species in the catalyst for Phillips polymerization, was supported on siliceous MCM 41. The obtained Cr/MCM 41, characterized by XRD, N 2 adsorption and TEM, possesses good crystallinity and long range ordered channels. The polymerization of ethylene did happen on Cr/MCM 41 to produce both crystalline and amorphous polyethylene. The activity is not only associated with polymerization conditions such as initial pressure of ethylene, temperature etc, but also related closely to Cr loading. The used Cr/MCM 41 still possesses one dimensional channels and long range ordered structure. |
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| Keywords: | Chromium MCM 41 Catalyst characterization Ethylene Polymerization Polyethylene |
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