| 固体超强酸Nd-SO42-/ZrO2/13x的制备与表征 |
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| 引用本文： | 赵先锐,刘天模,张学富. 固体超强酸Nd-SO42-/ZrO2/13x的制备与表征[J]. 工业催化, 2008, 16(2): 73-76 |
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| 作者姓名： | 赵先锐 刘天模 张学富 |
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| 作者单位： | (1.台州学院物理与电子工程学院, 浙江 临海 317000； 2.重庆大学材料科学与工程学院，;重庆 400044； 3.浙江东发环保工程有限公司,浙江 杭州 311203) |
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| 摘 要： | 合成了稀土Nd促进型Nd-SO42-/ZrO2固体超强酸，并将其负载于分子筛13x上，制备出Nd-SO42-/ZrO2/13x复合型固体超强酸催化剂。掺杂Nd提高了样品的催化活性，催化合成醋酸甘油酯反应的酯化率可达97.7%；负载分子筛13x,提高了样品的重复使用性能，重复使用5次后酯化率不低于92%。用IR及XPS对其结构进行了表征，结果显示,掺杂稀土Nd后IR谱图中S—O键超强酸位振动吸收峰显著增多，XPS谱图中Zr(Ⅳ)3d峰的化学位移进一步增大。结果表明,样品具有较高酸性，因而也说明具有较高催化活性和使用稳定性。
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| 关 键 词： | 催化剂工程 固体超强酸催化剂 Nd 制备 分子筛13x
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| 文章编号： | 1008-1143(2008)02-0073-04 |
| 修稿时间： | 2007-04-28 |
Preparation andcharacterization of Nd-SO2-4/ZrO2/13x solid superacid |
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| ZHAO Xianrui. Preparation andcharacterization of Nd-SO2-4/ZrO2/13x solid superacid[J]. Industrial Catalysis, 2008, 16(2): 73-76 |
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| Authors: | ZHAO Xianrui |
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| Affiliation: | 1. College of Physics and Electronics Engineering, Taizhou University, Linhai, 317000，Zhejiang,China；2. College of Material Science and Engineering, Chongqing University, Chongqing 400044，China；3. Zhejiang Dongfa Environment Protection Engineering Ld. Co., Hangzhou 311203，Zhejiang,China; |
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| Abstract: | A new complex solid superacid Nd-SO42-/ZrO2 was synthesized and loaded on 13X zeolite to give a new type of complex solid superacid Nd-SO42-/ZrO2/13x catalyst. The acidity of SO42-/ZrO2 sample was increased by Nd doping and stability of Nd-SO42-/ZrO2 catalyst was improved by loading it on 13x zeolite. The esterification ratio reached 97.7% over the Nd-SO42-/ZrO2/13x catalyst and decreased only 4.9% after 5 times of use.The catalysts were characterized by IR and XPS. The results of IR investigation showed that the numbers of S—O bond vibration peaks were increased remarkable after doping of Nd. The binding energy of Zr3d shifted to higher in XPS patterns.All of the results exhibited that Nd-SO42-/ZrO2/13x catalyst has stronger acidity, higher activity, and better durability. |
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| Keywords: | solid superacid catalyst Nd preparation 13x zeolite catalyst engineering |
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