磁化率和紫外-可见光谱法研究MoO_2Cl_2-Al(i-Bu)_2OPhCH_3体系合成1,2-聚丁二烯的催化性质 |
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引用本文: | 刘亦凡,梁玉华,黄华,陈滇宝,唐学明.磁化率和紫外-可见光谱法研究MoO_2Cl_2-Al(i-Bu)_2OPhCH_3体系合成1,2-聚丁二烯的催化性质[J].石油化工,1991(8). |
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作者姓名: | 刘亦凡 梁玉华 黄华 陈滇宝 唐学明 |
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作者单位: | 青岛化工学院高分子材料工程系,青岛化工学院高分子材料工程系,青岛化工学院高分子材料工程系,青岛化工学院高分子材料工程系,青岛化工学院高分子材料工程系 青岛 266042,青岛 266042,青岛 266042,青岛 266042,青岛 266042 |
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摘 要: | MoO_2Cl_2-Al(i-Bu)_2OPhCH_3体系的磁化率和紫外-可见光谱测定结果表明,Al-Mo两组份—接触立刻发生化学反应。Al/Mo(mol比)=0.23时,体系磁化率达到极大值,是Mo(V)存在的标志。其光谱吸收带分别是742nm和335nm。Al/Mo>1时,Mo(V)的光谱吸收带渐渐消失。Al/Mo≥2时,体系在室温下就显催化活性。
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Study on Molybdenum Catalytic System MoO_2Cl_2-Al (i-Bu)_2OPhCH_3 tor Synthesis of 1,2-Polybutadiene by Using Magnetic Susceptibility and UV-VIS Spectrum |
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Abstract: | The interactions between the components in the MoO_2Cl_2-Al(i-Bu)_3OPhCH_3 system has been studied by using magnetic susceptibility and UV-VIS spectrum. The results show that in binary system of Mo-Al the reaction of Mo(Ⅵ)→Mo(Ⅴ) takes place, and the characteristic absorption bands of Mo(V)are at 742nm and 355 nm. In binary system of Mo-Al the maximum value of X_g appears at Al/ Mo=0.23. When Al/Mo>1 the characteristic absorption band at 742 nm vanishes gradually. When Al/Mo≥2 the system has the catalytic activity for the polymerization of butadiene at room temperatures. |
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