Investigation of a liquid-liquid extraction system based on non-ionic surfactant-salt-H2O and mechanism of drug extraction

Based on the investigation of a non-ionic surfactant-salt-H₂O liquid-liquid extraction system, general rules concerning salt selection are concluded and the mechanism of phase separation is explained. The extraction behavior of chlorpromazine hydrochloride (CPZ) and procaine hydrochloride (PCN) in such a system is studied. Research shows that the extraction efficiency of CPZ can amount to 96% by twice extraction, which means that quantitative extraction is realized, while that of PCN is 77%. This system produces distribution coefficients (K_D) of 12.3 and 2.6, respectively, for CPZ and PCN. Extraction mechanism is deduced according to ultraviolet absorbance; and molecular fluorescence spectra change of the drugs in the system studied.     

聚丙烯胺肟螯合纤维的合成及其对铜（Ⅱ）离子的吸附

利用预辐照接枝法合成了聚丙烯胺肟螯合纤维，研究了影响接枝率，胺肟基团含量及离子吸附的因素，该纤维对铜的离子的吸附容量达０．６７ｍｍｏｌ／ｇ干纤维。     

农作物秸秆解聚研究

农作物秸秆是重要的生物质资源。本文从我国建立资源节约和环境友好社会目标的角度,论述了农作物秸秆高效利用的重要性和研究农作物秸秆解聚对开发农作物秸秆高效利用的新工艺的重要意义。介绍了农作物秸秆解聚的典型工艺及解聚产物组成分析和利用研究的进展,预测了农作物秸秆解聚研究的发展方向。     

希土Eu(Ⅲ)与2-丙酰-茚满二酮-1,3的二元、三元配合物的合成、表征及发光性能研究

合成2-丙酰-茚满二酮-1,3及其Eu(Ⅲ)的二元、三元固态配合物,经化学分析、元素分析确定了配合物的化学组成,通过红外光谱、紫外光谱进行表征,用配合物的荧光光谱和配体低温磷光光谱分析了配合物的荧光强度和能有效发光的原因.     

聚丙烯/POE共混组成对材料断裂行为的影响

采用基本断裂功(EWF)方法对聚丙烯(PP)/聚烯烃弹性体(POE)共混物的注射双边缺口拉伸试样的断裂行为进行了研究,比较了不同POE含量对共混物各断裂参数的影响.结果表明,PP和用量为5phr POE的共混物都可完全满足EWF方法的要求,共混物的断裂韧性-比基本断裂功we,较PP有显著提高;POE用量为10phr以上的共混物则出现明显的成颈现象而限制了EWF方法的应用;PP和各种POE用量的共混物都得到了其屈服所需要的比基本断裂功we,y和比塑性功β′wp,y.     

ZnO对Ag/SiO2催化剂银的分散作用及对吲哚合成稳定性的影响

将ZnO助剂加到由苯胺和乙二醇一步合成吲哚的Ag/SiO2催化剂中,发现ZnO助剂能大大提高催化剂的稳定性.XRD和TEM表征首次得到:ZnO是结构型助剂,它能使银很好地分散在SiO2表面上,并可有效地抑制反应过程中银粒子的烧结.     

Water/Oil Biphasic Hydroformylation of Higher Olefins over a TPPTS-Rh/SiO2 Catalyst

A novel TPPTS-Rh/SiO2 catalyst, prepared by directly modifying a heterogeneous highsurface-area Rh/SiO2 catalyst with water-soluble TPPTS ligands, could decrease the resistance of mass transfer in water/oil biphasic media for the hydroformylation of higher olefins. The catalytic performance for hydroformylation on this biphasic TPPTS-Rh/SiO2 catalyst system was higher than those of the traditional biphasic HRhCO(TPPTS)3 systems, owing to the chemical bonds between the highly dispersed Rh metal particles and the TPPTS ligands. The catalyst system is applicable for hydroformylation of higher olefins such as 1-dodecene.