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将水溶性铑-膦配合物Rhci(CO)(TPPTS)_2(TPPTS:P-(m-C_6H_4SO_3Na)_3)负载于扩孔硅胶上,制成负载水相催化剂(SAPC),在高压反应釜中研究其催化1-己烯氢甲酰化的性能。结果表明,催化剂的水含量对其活性影响很大,在一较窄的水含量范围内(25—35wt%),催化剂活性急剧增大,且存在一极大值,表现出水膜催化剂的特性。反应温度、总压和CO/H_2分压、Rh/P比的影响,与使用烃溶性能。三苯膦络合催化剂时有类似规律,溶剂的影响不明显,实验证明,SAPC具有良好催化活性,SiO_2上负载的铑配合物不会被原料和产物洗提而造成流失,有利于催化剂的稳定和重复使用。
The water-soluble Rhodium (CO) (TPPTS) _2 (TPPTS: P- (m-C_6H_4SO_3Na) _3) was loaded on the expanded silica gel to prepare a supported aqueous phase catalyst (SAPC) Its catalytic performance of 1-hexene hydroformylation. The results showed that the water content of the catalyst had a great influence on its activity. In a narrow range of water content (25-35 wt%), the activity of the catalyst increased sharply and had a maximum value, indicating the characteristics of the water film catalyst. Reaction temperature, total pressure and CO / H 2 partial pressure, Rh / P ratio, and the use of hydrocarbon solubility. Triphenylphosphine complex catalyst has a similar rule, the impact of the solvent is not obvious, the experimental results show that, SAPC has good catalytic activity, the rhodium complex supported on SiO 2 will not be lost due to the extraction of raw materials and products, is conducive to the stability of the catalyst And reuse.