| 二芳基乙烷的合成研究 |
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| 引用本文： | 唐清华,王春华,郭振良. 二芳基乙烷的合成研究[J]. 高师理科学刊, 2004, 24(3): 46-50 |
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| 作者姓名： | 唐清华 王春华 郭振良 |
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| 作者单位： | 烟台师范学院,化学与材料科学学院,山东,烟台,264025 |
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| 基金项目： | 山东省教育厅资助课题 (JOOC5 4) |
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| 摘 要： | 采用共沉淀法制备了复合型固体超强酸SO42 - /TiO2 -Fe2 O3,并将其用于二芳基乙烷的合成 .制备该催化剂的最佳条件为 :钛铁摩尔比为 1∶2 ,浸泡其用的硫酸浓度为 0 .5mol/L ,焙烧温度为 5 5 0℃ ;其催化活性和稳定性都优于单氧化物固体超强酸 .该催化剂催化合成二芳基乙烷的最佳条件为 :苯乙烯与二甲苯之比为 1∶7.5 ,催化剂用量为 1 %(总投料质量百分比 ) ,反应时间为 3h ,反应温度为回流温度 ,产率可达 92 .1 %.
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| 关 键 词： | 固体超强酸 SO42-/TiO2-Fe2O3 二芳基乙烷 催化合成 |
| 文章编号： | 1007-9831(2004)03-0046-05 |
| 修稿时间： | 2004-06-25 |
The synthesis of PXE catalyzed by the composite solid superacide SO42-/TiO2-Fe2O3 |
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| TANG Qing-hua,WANG Chun-hua,GUO Zheng-liang. The synthesis of PXE catalyzed by the composite solid superacide SO42-/TiO2-Fe2O3[J]. Journal of Science of Teachers＇College and University, 2004, 24(3): 46-50 |
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| Authors: | TANG Qing-hua WANG Chun-hua GUO Zheng-liang |
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| Abstract: | The composite solid superacide SO 4 2- /TiO 2- Fe 2O 3 was choosed for the first time to catalyze the synthesis of PXE. The optimum conditions for preparing the catalyst were as follows: molar ratio of Ti to Fe 1∶2,soaking with 0.5 mol/L sulphuric acid and baking at 550 ℃ for 3 h. The optimum conditions for using this catalyst to synthesize PXE were using 1% of catalyst with the molar ratio of xylol to styrene being 7.5∶1 and the reaction temperature being 140 ℃ and reaction time being 3 h; The yield of PXE under such conditions was about 92.1%. |
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| Keywords: | composite solid superacid SO 4 2- /TiO 2-Fe 2O 3 PXE catalysis |
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