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THE SWELLING BEHAVIOR OF (W/O)/W LIQUID SURFACTANT MEMBRANE(Ⅰ)MODELING OF THE PERMEATION-SWELLING PROCESS 下载免费PDF全文
Water transfer through the organic phase of kerosene containing surfactant Span 80,L113B and certain carrier wasstudied theoretically and experimentally in(W/O)/W liquid surfactant membranes.The process of swelling owing to os-motic pressure can be pictured as solubilization of water in membrane phase caused by surfactant and certain carriers andthen diffusion of it through the membrane between the two aqueous phases due to the gradient of chemical potential.Amathematical model for estimating the permeation-swelling rate has been developed.This mathematical model does notcontain any adjustable parameters and the predicted values agree well with the experimental data of Fujinawa et al.,Xinsheng Ma and Yajun Shi and the authors.Using an apparatus developed for measuring the solubility of water in membrane phase,data for solubilization ofwater in oil caused by some surfactants and carrier were measured. 相似文献
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各位理事、各位代表:大家好!经过多方精心筹备,全国化工高等教育学会三届四次理事会暨换届工作会议今天在南京师范大学隆重召开了。在此,我谨代表学会理事会向应邀光临本次大会的清华大学原副校长余寿文教授表示热烈的欢迎和衷心感谢!向出席本次会议的南京师范大学领导、全体理事和代表表示热烈欢迎!同时,向为筹备本次会议而付出辛勤劳动的南京师范大学化学与环境科学学院的全体领导和老师表示衷心的感谢!全国化工高等教育学会三届理事会自1999年10月在西安交通大学产生至今,已整整过了六个年头。在此期间,我国政治、经济、文化、教育均发生… 相似文献
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离子液体催化丁醇与盐酸反应制备丁基氯 总被引:1,自引:0,他引:1
The catalytic performance of some quaternary ammonium salts for the liquid phase reaction of butanol and hydrochloric acid at different conditions was studied experimentally and compared with the traditional catalyst (ZnCl2). The organic ammonium catalysts investigated include ionic liquids N-butyl-N-methyl imidazolium fluoborate ([BMIM][BF4]) and N-butyl-N-methylimidazolium chloride ([BMIM]Cl) as well as hydrochloric salts of N-methylimidazol ([HMIM]Cl), pyridine ([HPy]Cl) and triethylamine ([HEt3N]Cl). It is shown that the intrinsic catalytic performance of all organic ammonium salts except [HEt3N]Cl is slightly superior to ZnCl2, while the selectivity of butyl chloride is nearly at the same level around 96%. The conversion of butanol increases slightly with temperature and the catalyst amount added while the variation of selectivity is not obvious. Based on the recycle experiments, the ionic liquids as catalyst for the reaction of butanol and hydrochloric acid can be used more than 5 times, which suggests great potential of using ionic liquids as novel catalyst for such reactions. 相似文献
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磷酸酯类离子液体在燃油深度脱硫中的应用 总被引:16,自引:6,他引:10
研究了3种磷酸酯类离子液体,即1,3-二甲基咪唑磷酸二甲酯盐([MM im]DM P)、1-乙基-3-甲基咪唑磷酸二乙酯盐([EM im]DEP)和1-丁基-3-甲基咪唑磷酸二丁酯盐([BM im]DBP)的制备过程,考察了这3种磷酸酯类离子液体对模型油中3-甲基噻吩、苯并噻吩和二苯并噻吩的脱除效果及磷酸酯类离子液体的电化学再生方法。实验结果表明,这3种磷酸酯类离子液体的脱硫能力强弱顺序为:[EM im]DEP>[BM im]DBP[MM im]DM P;且对二苯并噻吩的脱除效果最好,对苯并噻吩的脱除效果次之,对3-甲基噻吩的脱除效果较差。以[EM im]DEP为萃取剂,油剂质量比为1∶1时,经5次萃取后,二苯并噻吩的脱除率可达到99.5%。利用电解法对[EM im]DEP进行了再生,在5~10V电压下电解10h,[EM im]DEP的脱硫率可以达到新鲜[EM im]DEP的90%以上。 相似文献
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一个液体混合物表面张力的新方程 总被引:1,自引:0,他引:1
<正> 液体混合物的表面张力是相间传热和传质的重要因素,无论从工程或物理化学角度来讲,都有必要建立关联和预测液体混合物表面张力的方程式。从文献中已见到一些这 相似文献
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马来酰亚胺类杀菌剂的制备与性能评价 总被引:2,自引:0,他引:2
报道了2种马来酰亚胺类化合物Ⅳ-苯基马来酰亚胺和Ⅳ-苄基马来酰亚胺的制备过程及其对石化污水中的三种主要菌类即异养菌、铁细菌和硫酸盐还原菌的静态杀菌性能,并将其与目前常用的异噻唑啉酮和“1227”(十二烷基二甲基苄基氯化铵)进行了比较。结果表明,Ⅳ-苄基马来酰亚胺是一种高效杀菌剂。其性能优于异噻唑啉酮,与“1227”相比,其1h的杀菌效果稍弱,但其持久杀菌效果远好于“1227”。N-苯基马来酰亚胺对异养菌和铁细菌有一定的杀菌效果。但对硫酸盐还原菌无效。 相似文献
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通过络合沉淀法制备纳米二次结构的球形氢氧化镍粉体。X射线衍射光谱法(XRD)和扫描电子显微镜法(SEM)分析表明产物为纳米氢氧化镍薄片构成的粒径为8~20μm之间的球形β型氢氧化镍。实验发现,样品的结构和密度主要受pH值和氨水浓度的支配,11.0≤pH≤11.7时,氨水浓度对样品密度起着决定性作用。通过调节合适的pH条件,可以控制氢氧化镍薄片的厚度和堆积密度从而使样品的振实密度在1.90~2.10 g/cm3之间可控。恒流充放电测试表明,样品在2 000 mA/g高电流密度下具有良好的快速充放电性能,其放电比容量在高压段高达219~277 mAh/g。 相似文献