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furien金蟲 (小有名氣)
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[交流]
【求助】incipient wetness impregnation method是什么方法? 已有2人參與
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| incipient wetness impregnation method是什么方法?我只知道叫初濕含浸法,是催化劑載體空體積和催化劑本身體積相等時進行浸漬法制備催化劑的方法?有沒有人能具體舉個例子?什么叫等體積 |
鐵桿木蟲 (正式寫手)
| Incipient wetness impregnation (IW or IWI) is a commonly used technique for the synthesis of heterogeneous catalysts. Typically, the active metal precursor is dissolved in an aqueous or organic solution. Then the metal-containing solution is added to a catalyst support containing the same pore volume as the volume of solution that was added. Capillary action draws the solution into the pores. The catalyst can then be dried and calcined to drive off the volatile components within the solution, depositing the metal on the catalyst surface.The maximum loading is limited by the solubility of the precursor in the solution. the concentration profile of the impregnated compound depends in the mass transfer conditions within the pores during impregnation and drying. |
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