| Ce和La改性固体超强酸S2O82-/ZrO2-SiO2催化剂合成及其酯化性能研究 |
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| 引用本文： | 曾飞虎,陈崇城,陈晓玲,王志文.Ce和La改性固体超强酸S2O82-/ZrO2-SiO2催化剂合成及其酯化性能研究[J].工业催化,1992,28(10):42-47. |
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| 作者姓名： | 曾飞虎 陈崇城 陈晓玲 王志文 |
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| 作者单位： | 黎明职业大学,福建 泉州 362000 |
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| 基金项目： | 福建省教育厅A类科技研究项目计划JA12411 |
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| 摘 要： | 以Zr(NO3)4·5H2O和Na2SiO3·9H2O为原料,利用共沉淀法制备前驱体,浸渍添加稀土Ce和La,一定温度焙烧后制得掺杂稀土S2O82-/ZrO2-SiO2固体超强酸。通过XRD、FT-IR和SEM对催化剂进行表征,以硬脂酸的酯化合成反应为探针,考察制备条件对催化剂性能的影响以及催化剂的重复使用率。结果表明,相对于未改性的S2O82-/ZrO2-SiO2催化剂,添加了Ce或La的固体超强酸酯化催化活性及重复使用性能均有提高。
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| 关 键 词： | 催化化学 固体超强酸 稀土改性 酯化反应 硬脂酸正丁酯 |
Synthesis of S2O82-/ZrO2-SiO2 superacid catalyst modified by La or Ce and its activity in esterification |
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| Zeng Feihu,Chen Congcheng,Chen Xiaoling,Wang Zhiwen.Synthesis of S2O82-/ZrO2-SiO2 superacid catalyst modified by La or Ce and its activity in esterification[J].Industrial Catalysis,1992,28(10):42-47. |
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| Authors: | Zeng Feihu Chen Congcheng Chen Xiaoling Wang Zhiwen |
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| Affiliation: | Liming Vocational University,Quanzhou 362000,Fujian,China |
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| Abstract: | Sulfated zirconia-silica impregnated with Ce or La were prepared by a co-precipitation method from Zr(NO3)4·5H2O and Na2SiO3·9H2O material.Catalysts structural properties were characterized by X-ray diffraction(XRD),FT-IR,TG and SEM.The catalytic activity was valued in the esterification of butyl stearate.Influence of various preparation parameters on catalytic performance and catalyst reusability were studied.The results showed that the activities and stabilities of the S2O82-/ZrO2-SiO2 catalysts modified by rare earths were improved,and the reuse capacity was also enhanced. |
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| Keywords: | catalytic chemistry solid superacid rare earth modification esterification reaction butyl stearate |
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