| 新型稀土固体超强酸S_2O_8~(2-)/Sb_2O_3/La~(3+)的制备与再生 |
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| 引用本文： | 舒华,郭海福,吴文胜,吴燕妮,闫鹏.新型稀土固体超强酸S_2O_8~(2-)/Sb_2O_3/La~(3+)的制备与再生[J].精细石油化工,2008,25(5). |
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| 作者姓名： | 舒华 郭海福 吴文胜 吴燕妮 闫鹏 |
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| 作者单位： | 广东肇庆学院化学化工学院,广东,肇庆,526061 |
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| 基金项目： | 广东省自然科学基金，广东省科技厅科技计划 |
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| 摘 要： | 以金属醇盐水解法制得前氧体 Sb_2O_3,采用浸渍法制备了稀土固体超强酸 S_2O_8~(-2)/Sb_2O_3/La~(3+)催化剂,以催化合成乙酸苄酯为探针反应考察了催化剂的制备条件。结果表明:以1.5 mol/L 的(NH_4)_2S_2O_8 和ωLa(NO_3)_3]=2.71%的 La(NO_3)_3混合液浸渍锑前氧体,经110℃烘干,于500℃焙烧3 h 所得催化剂活性较好。采用了 TG/DTA 考察了催化剂的失活原因,其最佳再生方法是:用无水乙醇洗涤,500℃焙烧再生。
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| 关 键 词： | 固体超强酸 S_2O_8~(2-)/Sb_2O_3/La~(3+) 再生 失活 三氧化二锑 |
STUDIES ON PREPARATION AND REGENERATION OF THE NOVEL RARE-EARTH SOLID SUPER-ACID S2O82--/Sb2O3/La3+ CATALYST |
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| Shu Hua,Guo Haifu,Wu Wensheng,Wu Yanni,Yan Peng.STUDIES ON PREPARATION AND REGENERATION OF THE NOVEL RARE-EARTH SOLID SUPER-ACID S2O82--/Sb2O3/La3+ CATALYST[J].Speciality Petrochemicals,2008,25(5). |
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| Authors: | Shu Hua Guo Haifu Wu Wensheng Wu Yanni Yan Peng |
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| Abstract: | A rare earth solid superacid S_2O_8~(2-)/Sb_2O_3/La~(3+)was prepared by using Sb_2O_3 as precursor, doped with(NH_4)_2S_2O_8 and La(NO_3)_3.The synthesis of benzyl acetate was used as a probe reaction. The optimal conditions for the preparation of the catalysts were found as follows:1.5 mol/L (NH_4)_2S_2O_8 and 2.71% ga(NO_3)_3 for the impregnation of Sb_2O_3,followed by drying at 110℃ and calcination at 500℃ for 3 h.The catalysts were investigated by TG/DTA for causes of deactivation and regeneration methods.The optimum regeneration method is=washing with alcohol and calcination at 500℃. |
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| Keywords: | solid super acid S_2O_8~(2-)/Sb_2O_3/La~(3+) regeneration deactivation antimonious oxidize |
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