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| Preparation of catalyst for oils and fats hydrogenation |
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| KeyWord:oils and fats hydrogenation catalyst structure model |
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| Abstract: |
| 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. |
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