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以乙二醇为溶剂和还原剂,聚乙烯吡咯烷酮(PVP)为保护剂,RuCl_3·nH_2O为前体盐[n(PVP)∶n(Ru~(3+))=10∶1],还原制备了高分子稳定的Ru纳米簇。通过TEM、XRD表征发现,制得的钌粒径在2.5 nm左右;通过控制钌的负载量制备了一系列聚砜/钌纳米簇杂化膜,通过SEM、XPS、TG、透气性能和孔隙率测试对杂化膜的结构及性能进行表征。结果发现,由于Ru和聚砜中的S、O元素存在着配位作用而使得杂化膜热稳定性提高,透气选择性明显提高;杂化前后,膜的孔隙率由21%增大到52%左右,而负载量的变化对膜的孔隙率影响不大。基于以上基础研究,通过干湿法纺丝制得PSF/2%Ru杂化中空纤维膜并经费托测试发现,在190℃时,产物中C_1~C_4质量分数达到6.3%左右,对费托反应起到一定的催化作用。
Using ethylene glycol as solvent and reducing agent, polyvinylpyrrolidone (PVP) as protective agent, RuCl_3.nH_2O as precursor salt [n (PVP): n (Ru ~ (3 +)) = 10: 1] The polymer-stabilized Ru nanoclusters. The TEM and XRD results showed that the particle size of ruthenium was about 2.5 nm. A series of polysulfone / ruthenium nanocomposites were prepared by controlling the loading of ruthenium. SEM, XPS, TG, gas permeability and porosity Test the structure and performance of hybrid membranes were characterized. The results showed that due to the coordination of Ru and S, O elements in polysulfone, the thermal stability of the hybrid membrane increased and the gas permeability increased obviously. The porosity of the membrane increased from 21% to 52 %, While the change of loading has little effect on the porosity of the membrane. Based on the above basic research, the PSF / 2% Ru hybrid hollow fiber membrane was prepared by wet-dry spinning and tested by Fischer-Tropsch. The results showed that the mass fraction of C 1 -C 4 in the product reached about 6.3% at 190 ℃, Play a catalytic role.