| 丁二烯催化环化三聚中多金属的协同效应 |
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| 引用本文： | 孙琪,廖世健.丁二烯催化环化三聚中多金属的协同效应[J].高等学校化学学报,1997,18(6):951-954. |
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| 作者姓名： | 孙琪 廖世健 |
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| 作者单位： | 辽宁师范大学化学系!大连，116029，中国科学院大连化学物理研究所!大连，116023，中国科学院大连化学物理研究所!大连，116023，中国科学院大连化学物理研究所!大连，116023，南开大学元素有机化学研究所!天津，300071 |
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| 基金项目： | 国家自然科学基金，中国科学院上海有机化学研究所金属有机开放实验室资助 |
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| 摘 要： | 研究了第二过渡金属化合物对ＴｉＣｌ４／ＡｌｅＴ１．４６ｃＬ１．５４催化丁二烯环化三聚的多金属协同效应。结果表明，极少量的第二过渡金属化合物，如Ｃｒ，（ａｃａｃ）３，Ｍｎ（ａｃａｃ）３，ＮｉＣｌ２，ＺｒＣｌ４等加入ＴｉＣｌ４／ＡｌＥｔ１．４６Ｃｌ１．５４体系后不同程度地提高了丁二烯环化三聚的选择性，并改变了体系的最大速率和催化剂效率。
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| 关 键 词： | 钛系 多金属催化剂 丁二烯 环化三聚 协同效应 |
Synergic Effect of Multimetallic Catalysts in the Cyclotrimerization of Butadiene |
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| SUN Qit, LIAO Shi-Jian, XU Yun, YU Dao-Rong, CHEN Shou-Shan.Synergic Effect of Multimetallic Catalysts in the Cyclotrimerization of Butadiene[J].Chemical Research In Chinese Universities,1997,18(6):951-954. |
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| Authors: | SUN Qit LIAO Shi-Jian XU Yun YU Dao-Rong CHEN Shou-Shan |
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| Abstract: | The synergic effect of multimeta1lic catalysts by the addition of the second transi-tion metal compound to the TiCl4/AlEt1.46Cl1.54 system has been investigated in the cy-clotrimerization of butadiene. The experimental results indicate that with the addition of a very small amount of the second metal compound, Cr(acac)3, Mn(acac)3, NiCl2, ZrCl4 etc.to the Ti-Al system, the selectivity of cyclotrimerization of butadiene was improved(except Ni (OAc)2), the maximum turnover frequency (TOFmax.) and turnover (TO ) were changed.The second metal compound should be added to Ti-Al system before Ti active species formed, otherwise no synergic effect will be observed- The second metal compound/AlEt1.46Cl1.54 systems alone can catalyze the dimerization(Cr, Mn, Fe, Zr sa1ts) or polymerization (Ni, Co salts) of butadiene. |
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| Keywords: | Multimetallic catalyst of Ti system Synergic effect Cyclotrimerization trans trans cis-1 5 9-Cyclododecatriene |
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