|
| 油脂氢化催化剂的研制 |
| Preparation of catalyst for oils and fats hydrogenation |
| |
| DOI： |
| 中文关键词: 油脂氢化 催化剂 结构模型 |
| 英文关键词:oils and fats hydrogenation catalyst structure model |
| 基金项目: |
|
| Hits: 1168 |
| Download times: 365 |
| 中文摘要: |
| 用H-冷等离子体还原传统油脂氢化催化剂（B4催化剂），得到的产物（HP-B4催化剂）的催化性能远优于B4催化剂。借助XRD、XPS和EDS，对比研究了B4催化剂和HP-B4催化剂性能和结构的关系，揭示了B4催化剂和H-冷等离子体反应的反应机理，提出了HP-B4催化剂的结构模型，此模型揭示了HP-B4催化剂的催化性能大幅提高的内在原因。模拟此模型，用化学方法合成了具有相同结构特征的CIM（化学革新材料）油脂氢化催化剂，CIM性能更好。运用电子云分布理论分析HP-B4 和还原后CIM催化剂中金属的离子性。再借助XRD、XPS和EDS，对比研究了HP-B4催化剂和还原后的CIM催化剂结构和性能的关系，验证了HP-B4、CIM和还原后CIM催化剂的结构模型是合理的。载体和活性组分的强相互作用使得催化剂性能CIM＞HP-B4＞B4，CIM催化剂易实现大规模制备，制备方法简单，效果好，可以移植到其他的催化剂制备领域，具有广阔的应用前景。 |
| 英文摘要: |
| The traditional CuCO3-NiCO3/Kieselguhr oil hydrogenation catalyst (B4 catalyst) was reduced by H-cold plasma, the results showed that the catalytic performance of the reaction product(HP-B4 catalyst) obviously improved. The relationships between the performance and structure of B4 catalyst and HP-B4 catalyst were compared by XRD, XPS and EDS, the reaction mechanism of H-cold plasma and B4 catalyst was revealed, and a structure model of HP-B4 catalyst was put forward. This model explained the inside reason why the catalytic performance of HP-B4 catalyst improved remarkably. To simulate this model, the CIM (chemical innovation material)oils and fats hydrogenation catalyst was prepared by chemical method，which had the same structural features as HP-B4 catalyst, and its performance was better. Using electron cloud distribution theory, the ionic properties of the HP-B4 and reduced CIM catalysts were analyzed. By XRD, XPS and EDS, the relationships between the performance and structure of HP-B4 and reduced CIM catalysts were studied and the structure models of HP-B4, CIM and reduced CIM catalysts were proved to be reasonable. Because of the strong interaction between the active component and the carrier in the catalyst, the cataytic performance of CIM was the best, followed by HP-B4 and B4. CIM catalyst was easy to achieve industrialization, and the preparation method was simple and effective, which could be used in other catalytic fields. It had broad application prospects. |
| 查看全文 View/Add Comment Download reader |
| Close |
|
|
|
