| 谢志凯,陈秀莹,胡文斌,舒绪刚,周新华,陈伟文.功能化金属有机骨架负载铂高效催化硅氢加成反应[J].分子催化,2018,32(6):520-529 |
| 功能化金属有机骨架负载铂高效催化硅氢加成反应 |
| Functionalized Metal-Organic Framework Supported Platinum Highly Efficient Catalytic Hydrosilylation |
| 投稿时间：2018-07-30 修订日期：2018-09-20 |
| DOI： |
| 中文关键词: 金属有机骨架 后修饰 多相铂催化剂 硅氢加成 工艺优化 |
| 英文关键词:metal organic framework post-modification heterogeneous platinum catalyst hydrosilylation process optimization |
| 基金项目:国家自然科学基金（No.21476272）. |
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| 摘要点击次数: 1914 |
| 全文下载次数: 1751 |
| 中文摘要: |
| 采用后修饰法合成MIL-101-791，并通过简单的浸渍法制备了Pt/MIL-101-791催化材料.利用傅里叶红外光谱仪（FT-IR）、氮气吸附脱附（BET）、热重分析（TGA）、X射线衍射仪（XRD）、透射电子显微镜（TEM）和X射线光电子能谱仪（XPS）等对催化材料进行表征.采用硅氢加成反应作为Pt/MIL-101-791催化性能的探针.结果表明：Pt成功的分散在MIL-101-791上，并体现出了高效的催化活性和良好的稳定性，循环使用5次后仍能保持较高的催化活性，转化率能保持在85%以上.通过优化该反应的生产条件，得出最佳催化工艺：3%催化剂用量占总底物用量的0.24%，n（APEG）/n（MDHM）=1.1/1，催化时间为3 h，催化温度为90℃下，MDHM的转化率高达94%，生成的产品色泽纯净，且在植物表面具备良好的铺展性能. |
| 英文摘要: |
| The grafting method was used to synthesize MIL-101-791, and the Pt/MIL-101-791 catalytic material was prepared by a simple impregnation method. Fourier transform infrared spectroscopy (FT-IR), nitrogen adsorption desorption (BET), thermogravimetric analysis (TGA), X-ray diffractometry (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS) were used to characterize the catalytic material. A hydrosilylation reaction was used as a probe for the catalytic performance of Pt/MIL-101-791. The results show that Pt is successfully dispersed on MIL-101-791, which shows high catalytic activity and good stability. After 5 cycles of recycling, it still maintains high catalytic activity, and the conversion can be maintained above 85%. By optimizing the production conditions of the reaction, the optimal catalytic process was obtained:3% catalyst accounted for 0.24% of the total substrate amount, n(APEG)/n(MDHM)=1.1/1, and the catalytic time was 3 h. The catalytic temperature is 90℃, the conversion of MDHM is about 94%, the product color is pure, and it has good spreading performance on the plant surface. |
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