| 功能化氧化石墨烯催化CO2的化学固定 |
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| 引用本文： | 卢金凯,张梦,李斌,董丽辉,范闽光.功能化氧化石墨烯催化CO2的化学固定[J].华南师范大学学报(自然科学版),2021,53(3):35-42. |
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| 作者姓名： | 卢金凯 张梦 李斌 董丽辉 范闽光 |
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| 作者单位： | 广西大学化学化工学院//广西石化资源加工及过程强化技术重点实验室，南宁 530004 |
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| 基金项目： | 国家自然科学基金项目21968002广西石化资源加工及过程强化技术重点实验室项目2019k006 |
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| 摘 要： | 通过一锅法将氨基官能化的咪唑离子液体嫁接在氧化石墨烯(GO)和硅铝酸盐中孔分子筛(SBA-15)上，用来催化合成环状碳酸酯. 通过傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、热重分析(TGA)和元素分析(EA)对催化剂的结构、热稳定性以及氨基官能化咪唑离子液体的嫁接量进行了研究. 在环加成反应过程中，GO-NH2的活性高于SBA-15-NH2. 最佳条件: 催化剂用量0.15 g、反应温度130 ℃、CO2压力1.5 MPa和反应时间5 h，碳酸丙烯酯的产率达到96.46%. 此外，催化剂具有可回收性并可以连续5次重复使用.
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| 关 键 词： | 环状碳酸酯 氧化石墨烯 离子液体 非均相催化 环氧化物 SBA-15 |
| 收稿时间： | 2021-03-15 |
Chemical Fixation of CO2 Catalyzed by Functionalized Graphene Oxide |
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| Institution: | School of Chemistry and Chemical Engineering, Guangxi University//Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, Nanning 530004, China |
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| Abstract: | The amino-functionalized imidazole ionic liquid (IL) was supported on graphene oxide (GO) and Santa Barbara Amorphous mesoporous molecular sieves (SBA-15) through the facile and simplified one-pot grafting approach to catalyze the synthesis of cyclic carbonates. The structure and thermal stability of the catalyst and the loading of the amino-functionalized imidazole IL were studied in detail with Fourier transforn infrared spectroscopy(FT-IR), scanning electron microscope(SEM), thermogravimetric analysis(TGA) and elemental analysis(EA). During the cycloaddition reaction, GO-NH2 exhibited higher activity than SBA-15-NH2. The optimum condition was 0.15 g catalyst, 130 ℃, 1.5 MPa CO2 pressure and 5 h of reaction time, and the yield of propylene carbonate reached 96.46%. Furthermore, the supported catalyst exhibited promising recyclability and reusability for five consecutive reuses. |
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