| 双酸位SO42-/ZrO2-SiO2固载离子液体催化剂的构筑及性能 | |
| Construction and Properties of SO42-/ZrO2-SiO2 Immobilized Ionic Liquid Catalysts with Double-Acid Active Sites | |
| 摘要: 采用一步共缩合-水热法合成酸性载体SO42-/ZrO2-SiO2，化学法接枝酸性离子液体磺酸功能化咪唑硫酸氢盐（[Ps-im]HSO4），构筑拥有Brönsted与Lewis双酸位的离子液体固载型催化剂SO42-/ZrO2-SiO2-IL。采用X射线衍射、傅里叶红外、N2吸附-脱附、X射线光电子能谱、热重以及透射电镜对催化剂的结构进行表征，结果表明：锆原子和酸性结构SO42-被成功引入纯硅材料，所合成的载体具有一定酸性；离子液体成功固载于酸性介孔材料SO42-/ZrO2-SiO2，且固载后的催化剂保持其介孔结构。以大豆油和甲醇的酯交换反应为探针，考察了SO42-/ZrO2-SiO2-IL催化剂的催化性能。在反应温度为150℃、反应时间为4 h、催化剂量5%（w/w）、醇油物质的量之比为24：1的反应条件下，生物柴油的收率超过92%，且回收利用5次后，生物柴油的收率仍达86%。 | |
| 关键词: 双酸位|生物柴油|酸性介孔材料|离子液体|固载 | |
| 基金项目: 国家自然科学基金（No.21306063）资助项目。 | |
| Abstract: The immobilized catalyst SO42-/ZrO2-SiO2-IL with double-acid active sites, namely Brönsted and Lewis acid sites, was synthesized by immobilization of acid ionic liquid sulfonic acid functionalized imidazolium hydrogen sulfate([Ps-im]HSO4) onto the surface of the acidic mesoporous material SO42-/ZrO2-SiO2 which was prepared by a one-step co-condensation technique combined with hydrothermal treatment. The structure of the catalyst was characterized by XRD, FT-IR, N2 absorption-desorption measurement, XPS, thermogravimetric analysis and TEM. The results showed that zirconium and acid structure (SO42-) were incorporated into the framework of pure silicon, bringing a certain acidity; and it also demonstrated that the ionic liquid was successfully immobilized onto the acidic mesoporous materials SO42-/ZrO2-SiO2 and the structure of the catalyst remained intact. The activity of SO42-/ZrO2-SiO2-IL was investigated by the transesterification of soybean oil with methanol for biodiesel production as the probe reaction. The yield of biodiesel was more than 92% when the reaction was carried out under the following condition:reaction temperature, 150℃; reaction time, 4 h; amount of catalyst, 5%(w/w); methanol to soybean oil, 24:1. And the catalyst still yielded about 86% after five cycles. | |
| Keywords: double-acid active sites|biodiesel|acidic mesoporous material|ionic liquid|immobilize | |
| 投稿时间：2016-08-09 修订日期：2016-11-01 | |
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| 倪邦庆,刘慧,范明明,张萍波.双酸位SO42-/ZrO2-SiO2固载离子液体催化剂的构筑及性能[J].无机化学学报,2017,33(1):97-105. | |
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