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University,Shanghai 200072,China摘 要:Fe3O4 magnetic nanoparticles were synthesized by the hydrothermal method,and the influences of the surfactant sodium bis... the surfactant during the synthesis process. The amount of the surfactant has an effect on the size,the dispersal,and the magnetic properties of the particles. Besides,the mechanisms of the influences......
of PdNPs on MWCNTs was investigated.When MWCNTs were modified with a cationic surfactant(hexadecyl trimethyl ammonium bromide,CTAB),the amount of the Pd-NPs(Pd-NP/CTAB-MWCNT)generated by such an in situ deposition method gets a notable increase,and the size of the as-synthesized Pd-NPs becomes smaller,compared with those in the absence of any surfactant(Pd-NP/MWCNT)or in the presence of an anionic......
Influence of Charge Density and Chain Length on the Interaction between Organic Anion and Montmorillonite郑俊萍,LI Jian,HAO Hui,YAO KangdeTianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University摘 要:Anionic surfactant sodium dodecyl sulfate (SDS), cationic surfactant cetyl trimethyl......
: A Agglomeration mechanism of surfactant of ultra-fine Al(OH)3 in drying process LIU Gui-hua1, ZHANG Yu-min2, LI Xiao-bin1 (1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China) Abstract: The influence of surfactant on the particle size......
献标志码:A 文章编号:1672-7207(2014)03-0895-07 Influence of surfactant on permeability of heap leaching of copper ore WU Aixiang, AI Chunming, WANG Yiming, HU... permeability and leaching rate of high mud-content ore, the mechanism of the surfactant accelerated seepage based on both physical chemistry and mechanics of fluids in porous media was introduced. Four......
molecular sieves with highly ordered structure were hydrothermally synthesized using cationic surfactant of cetyltrimethylammonium bromide as template agent, sodium silicate as silicon source... the synthesized molecular sieves. The effects of mole ratio of Si to Al and surfactant concentration on the formation and pore structure of AlMCM-41 were studied. The results show that single cylindrical pore......
. 关键词:铝酸钠溶液;表面活性剂;强化;晶种分解 中图分类号:TF 821 文献标识码: A Effect of nonionic surfactant on seeded precipitation of sodium aluminate solution PENG Zhi-hong, LIU Yan-ting, ZHOU Qiu-sheng, LIU Gui-hua, LI Xiao-bin (School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China) Abstract: The effects of a nonionic surfactant......
硫酸介质中Gemini表面活性剂对A3钢的吸附缓蚀性能 胡悦1,陈浩1,裘灵光1,毛东琳1 (1.安徽大学,化学化工学院,合肥,230601) 摘要:通过失重法和极化曲线法研究了阳离子季铵盐型Gemini表面活性剂Ⅱ-14-3及其添加卤离子的复配体系对A3钢在硫酸溶液中的缓蚀性能及其机理.结果表明,表面活性剂分子Ⅱ-14-3对A3钢在0.5 mol/L的硫酸中具有很好的缓蚀性能;在缓蚀剂浓度很低时,通过加入一定量的卤离子,可以得到较高的缓蚀性能,从而降低其应用成本;在硫酸介质中,Gemini表面活性剂在金属表面的吸附符合Langmuir吸附机理. 关键词:Gemini表面活性剂; 协同......
载量有下降的趋势,至HDTMAB加入量大于3倍阳离子交换容量时趋于平衡.SDS进入结构层内总体提高蒙脱石的有机碳含量,明显地增加产物的层间高度,并且改善其热稳定性. 关键词:阴阳离子表面活性剂; 柱撑蒙脱石; 十六烷基三甲基溴化铵; 十二烷基磺酸钠; anion-cationic surfactant; hexadecyltrimethylammonium bromide......
稳定苯乙烯/丙烯酸丁酯细乳液的制备 李建宗1,谭必恩2,张洪涛1,胡芳1 (1.湖北大学化学与材料学院,;2.华南理工大学材料学院,) 摘要:以十二烷基硫酸钠(SDS)作乳化剂,不同链长的脂肪烃或脂肪醇作共乳化剂,分别用搅拌和超声乳化方法制备一系列苯乙烯(St)/丙烯酸 丁酯(BA)细乳液.测定细乳液稳定性的结果表明,SDS/十六烷(HDE)的乳化效果最佳,HDE先 与单体混合结合超声波制备的细乳液最稳定.乳化剂,共乳化剂的种类和浓度,乳化温度, 超声时间等对细乳液的稳定性均有影响. 关键词:细乳液; 稳定性; 均质化; 制备; [全文内容正在添加中] ......