| 冷一欣,高再玲,苏继光.硅胶负载磷钼杂多酸催化氧化糠醛制顺丁烯二酸酐[J].分子催化,2012,(3):246-251 |
| 硅胶负载磷钼杂多酸催化氧化糠醛制顺丁烯二酸酐 |
| Synthesis of maleic anhydride by oxidizing furfural, Catalyzed by Phosphorusmolybdenumic Acid Supported on Silica Gel |
| 投稿时间：2012-02-14 修订日期：2012-04-27 |
| DOI： |
| 中文关键词: 磷钼杂多酸 催化剂 硅胶 糠醛 顺丁烯二酸酐 |
| 英文关键词:phosphorusmolybdenumic acid catalyst silica gel furfural maleic anhydride |
| 基金项目: |
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| 摘要点击次数: 1685 |
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| 中文摘要: |
| 采用浸渍法制备负载型磷钼杂多酸催化剂，将来自再生资源的糠醛催化氧化生成顺丁烯二酸酐。分析了催化剂的比表面积、分散性、结构特征、稳定性以及再生温度等性质。通过固定床微反应器考察杂多酸催化剂的催化性能；研究了焙烧温度、负载量对催化剂性能的影响，以及反应温度对顺丁烯二酸酐收率的影响。结果表明：通过浸渍制备的杂多酸催化剂具有杂多酸催化剂的Keggin结构，具有较好的稳定性和酸性；活性组分能较好的分布于载体SiO2上；催化剂的再生温度和活化温度均为400 ℃；在钼磷原子比为0.85，负载量为48.6%时催化性能较好，催化剂的表面酸量为0.646mmol/g；反应温度控制在365 ℃附近时，顺丁烯二酸酐收率可达到57.2%，选择性为62.7%。 |
| 英文摘要: |
| The present work introduces the catalyst Phosphorusmolybdenumic Acid, prepared by impregnation method, and used in synthesize maleic anhydride by oxidizing the renewable resource furfural. The study analyzed physical and chemical properties, such as the catalyst surface area, dispersion and structural characteristics. The Phosphorusmolybdenumic Acid catalytic performance was studied through a fixed bed micro-reactor; the study also included the calination temperature, catalyst loading impact, and the yield of maleic anhydride on reaction temperature impact. The result shows that the prepared catalyst had the Keggin structure of heteropoly acid, and well separated on the carrier SiO2; when activation temperature at 400 ℃, PMA content at 48.6%, the catalyst was at the best performance; at the reaction temperature of 365 ℃, a 57.2% yield of maleic acid was obtained. |
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