N.N''-二苄基乙二胺二乙酸盐的合成研究

以氯化苄，乙二胺为原料，在碱性条件下缩合得中间产物－N．N'-二苄基乙二胺，加入冰乙酸成盐得产物N．N'-二苄基乙二胺二乙酸盐。并进行了扩大试验。     

直接胺化缩合制备葡萄糖胺为化合物

在催化剂存在条件下，通过对葡萄糖与一乙醇胺或乙二胺的直接胺化缩合反应的研究，制备了N－葡萄糖基－乙醇胺和N，N′－双葡萄糖基－乙二胺，考察了反应温度，时间及催化剂用量对该类反应产物产率的影响。     

N,N-双十二烷基乙二胺的合成及摩擦学性能

以溴代十二烷和乙二胺为原料,通过亲核取代反应制备了N,N-双十二烷基乙二胺（C26H56N2）,通过实验考察了合成条件变化对N,N-双十二烷基乙二胺合成的影响。结果表明：在n(溴代十二烷)∶n(乙二胺)=2.4∶1、回流温度下反应8 h得到目标产物,收率为45.5%;利用FTIR、1H NMR、元素分析等手段对其结构进行了表征。探索了N,N-双十二烷基乙二胺作为润滑油添加剂的新应用。采用四球摩擦磨损试验考察了其在聚乙二醇400中的摩擦学性能。结果显示,当N,N-双十二烷基乙二胺添加量为2%时,聚乙二醇400的PB值可由696 N提高至862 N。     

N-乙基-N',N'-二甲基-N-苯基乙二胺的合成研究

介绍了N－乙基－N‘,N‘-二甲基－N－苯基乙二胺的合成方法,确定了以N－乙基－N－氯乙基苯胺和二甲胺水溶液为原料合成N－乙基－N‘,N‘-二甲基－N－苯基乙二胺的工艺条件,得到收率97％、纯度98％以上的产品。     

N,N-二烷基乙二胺

N,N-二烷基乙二胺可用于医药、表面活性剂和涂料领域,制备方法有胺氰甲基化法、胺用氮杂环丙烷处理法和乙二胺法等。在我国,淮安华东化工研究所和北京朝福化工实验厂生产N,N-二乙基乙二胺,丹东市精细化学品厂和溧阳市蒋店化工厂生产N,N-二甲基乙二胺。     

2—丙烯酰胺基十六烷磺酸的合成与表征

以丙烯腈，１－十六烯与发烟硫酸反应，合成了２－丙烯酰胺基十六烷基磺酸单体，借助ＩＲ，Ｈ－ＮＭＲ和元素分析确定了产物的结构。     

N,N''-二(3,4-二甲氧基苄基)-1,2-乙二胺的合成研究

N，N′-二(3，4-二甲氧基苄基)-l，2-乙二胺是合成抗癌增效剂SDB-乙二胺等药物的重要中间体。通过研究确证了其真实结构，改进了提纯方法，提高了后续反应的收率。     

一种多功能表面活性剂的合成

以长链烷基替代EDTA分子中的一个乙酸基，使其改性为既具表面活性又有络合金属离子能力的多功能表面活性剂。合成分两步，先以乙二胺、溴代烷为原料，合成了中间体N－长链烷基乙二胺(R-en)，然后R－en和氯乙酸反应生成了N－长链烷基乙二胺三乙酸钠盐（RNa3edta)。用正交实验法探讨了R－en的合成条件为：n(乙二胺）：n（溴代烷）＝（2.5-3.0)：1．0，反应温度为60℃，反应时间为8－10h，其收率均达98％。终产品合成条件为n(R-en):n（氯乙酸）＝1．05：2，反应时间为10h，反应温度为80℃，收率达86％。并通过红外光谱、核磁共振氢谱对终产品结构进行了初步确认。     

N-十六烷基乙二胺三乙酸钠的合成及性能

用无水乙二胺、1-溴-十六烷和氯乙酸为原料,合成N-十六烷基乙二胺三乙酸钠,以提高阴离子表面活性剂在硬水中的稳定性。性能研究表明:它在硬水中的稳定性达到4级,cmc为2 13mmol·dm-3,γcmc=34.7mN·m-1。对产物的润湿力、分散力、乳化力等其他性能也进行了研究。     

四聚季铵盐表面活性剂的合成及性能评价

采用乙二胺,环氧氯丙烷,N,N—二甲基十二烷基叔胺,N,N—二甲基十四烷基叔胺,N,N—二甲基十六烷基叔胺等试剂作为原料,合成了四聚季铵盐型表面活性剂。研究了三种合成产物的表面活性和其在石英片上的润湿性。实验结果表明三种合成的表面活性剂都有具有较低的临界胶束浓度(CMC值),且使用十四烷基叔胺作为合成原料的产物,具有最好性能。     

Formulating characteristics of high and low 2-phenyl linear alkylbenzene sulfonates in liquid detergents

Detergent range linear alkylbenzene (LAB) currently is manufactured by two different processes, using either aluminum chloride or hydrogen fluoride as the alkylation catalyst. The alkylates from the two processes are not exactly the same. Furthermore, the properties of the linear alkylbenzene sulfonate (LAS) surfactants made by sulfonation of the LABs also differ. Because LAS is used in most types of detergent products, it is important to known how the properties of each type of LAS differ. This paper compares the formulating characteristics (such as viscosity, solubility and foaming) of high and low 2-phenyl LAS in some typical household cleaning product formulations. It is concluded that the two types of LAS should not be used interchangeably without first checking carefully all the physical properties required in a product. Presented at the AOCS meeting in Honolulu, Hawaii in May 1986.     

Methyl Ester Sulfonate: A High-Performance Surfactant Capable of Reducing Builders Dosage in Detergents

The detergency performance of α-sulfo fatty-methyl ester sulfonate (α-MES) under different water hardness conditions was compared against the dominant workhorse in Home Care products, linear alkylbenzene sulfonate (LAS). Results demonstrate that α-MES has a higher soil removal index and its detergency performance is not drastically affected by water hardness, compared to that of LAS. The addition of α-MES to LAS also shows an improved cleaning performance and better water hardness resistance, due to the structural characteristics of α-MES, which allow the molecules to be relatively insensitive toward polyvalent ions such as Ca²⁺ and Mg²⁺. The washing performance of α-MES, α-MES/LAS, and LAS with different builders at various dosages was studied, and the results indicated that the dosage of builders in the detergent product could be reduced up to 33% with the application of α-MES, while the detergency is not sacrificed.     

木质素两性表面活性剂的合成及表面物化性能

以十二烷基二甲基叔胺、环氧氯丙烷为原料,合成了中间体(2,3-环氧丙基)十二烷基二甲基氯化铵(DMAC),再与磺化木质素(SL)酚羟基反应,合成了木质素两性表面活性剂LAS。通过正交实验确定了最佳合成条件:以丙酮为溶剂,n(SL)∶n(DMAC)=1∶1.1,反应时间3h,pH=12,反应温度55℃,产物中氮质量分数达2.25%。通过元素分析、傅立叶变换红外光谱、UV,确证了目的产物结构。测定产物的临界胶束质量浓度CMC为3g/L,γCMC为21.11mN/m,HLB值为10。表明所合成的木质素两性表面活性剂具有较高的表面活性。     

新型杀菌洗洁精的复配研究

采用杀菌剂二氯异氰脲酸钠与表面活性剂十二烷基苯磺酸钠、脂肪醇聚氧乙烯醚硫酸盐、脂肪酰二乙醇胺及助剂进行复配,得到了新型杀菌洗洁精.采用悬液定量杀灭实验,研究了洗洁精的杀菌作用,结果表明,有效氯150 mg/L的溶液对悬液中大肠杆菌和金黄色葡萄球菌作用10 min杀灭对数值均≥5.00.对洗洁精有效氯质量浓度、去污能力、泡沫性等各项指标进行检测,结果均符合标准.     

粉末活性炭应急处理模拟突发LAS污染源水试验研究

论文考察了粉末活性炭预吸附对模拟突发阴离子表面活性剂(LAS)污染源水的应急处理效果,利用烧杯实验研究了粉末活性炭的炭种、投加量、吸附时间、混凝剂种类以及投加量对粉末活性炭预吸附消除LAS的影响。进行了为期约一个月,处理规模为4m3/h的中试试验,考察了常规处理对含LAS源水的处理效果,优化了活性炭投加点,并且探寻了粉末活性炭预吸附对模拟突发LAS污染源水的处理能力。烧杯实验结果表明木质活性炭对LAS的去除效果优于煤质活性炭,优化的投加量为30mg/L,吸附时间30min以上。活性炭吸附后投加混凝剂(PAC)20mg/L可达最佳效果。中试结果表明常规处理对含LAS源水处理效果差,滤后去除率低于5%。活性炭投加点宜设在常规处理前端,接触时间45min。采用粉末活性炭预吸附应急处理突发LAS污染源水,在LAS超标6倍以下,滤前出水可达标。粉末活性炭预吸附应急技术可行性高,处理费用仅0.0255元/m3,为可能突发的水源LAS污染事故应急处理提供了技术支持。     

表面活性剂辅助制备锂离子电池三元正极材料

采用氢氧化物共沉淀法,设计了表面活性剂十二烷基苯磺酸钠（LAS）辅助工艺,在pH=11条件下制备了LiNi1/3Co1/3Mn1/3O2的前驱体,经过空气气氛炉900 ℃下煅烧15 h后,对所得样品进行XRD、SEM表征、电性能测试,探讨了LAS添加量对产物的影响。结果表明,LAS不仅不会影响材料的层状结构,还改善了材料颗粒分布,使颗粒分布均匀,粒径均一。在2.5~4.6 V电压区间、0.1 C的倍率条件下,首次放电比容量高达181.9 mA·h/g,经过30次循环后,放电比容量为168.2 mA·h/g,容量保持率达到92.46%。     

Biodegradability of linear alkylbenzene sulfonates subjected to wet air oxidation

Shake flask experiments were conducted to determine the biodegradability of aqueous linear alkylbenzene sulfonate (LAS) and LAS (1600 mg dm^?3) subjected to wet air oxidation (WAO), to assess the suitability of WAO as a pre‐treatment for biological degradation. The effects of WAO temperature (180–240 °C) and the concentration of the orthophosphoric acid catalyst (0–1.0 mol dm^?3) were investigated. Results showed that a higher WAO temperature increased the biodegradability of the WAO effluent. This was due to a greater removal of both recalcitrant sulfonated organics and organic concentration (TOC and COD). Conversely, greater orthophosphoric acid concentrations decreased the biodegradability of the WAO effluents. This was because the higher acid concentration increased the ionic strength and changed the WAO intermediate and product distribution, inhibiting microbial action. Nevertheless, the effluents from both variations of WAO were still more biodegradable than LAS at equivalent concentrations. However, since higher WAO temperatures can substantially increase capital costs, future work should focus on developing a WAO catalyst that both desulfonates and mildly oxidises LAS at moderate temperatures (200 °C). © 2002 Society of Chemical Industry     

Effect of water hardness ions on the solution properties of an anionic surfactant

The solution characteristics of the system linear alkylbenzene sulfonate (LAS)/Ca⁺⁺/builder were studied using a dynamic surface tension technique. The results showed that the rate of CA⁺⁺/LAS interaction is slower than the CA⁺⁺ binding rate of zeolite A. Consequently, zeolite A is effective in preventing precipitation of LAS by calcium ions. The data obtained from the study of Ca⁺⁺ binding detergent builders on solubilization of Ca(LAS)₂ showed that zeolite A was effective but the rate of solubilization was much slower than that for STPP. Incorporation of a small amount of phosphate with zeolite A in a detergent significantly increases the rate of solubilizing of Ca(LAS)₂.     

聚合物对烷基苯磺酸钠与钙离子相互作用的影响

用浊度法研究了聚合物对烷基苯磺酸钠与钙离子的相互作用的影响,不同聚合物,如聚乙烯亚胺（ＰＥＩ）、聚乙烯吡咯烷酮（ＰＶＰ）和聚乙二醇（ＰＥＧ）在同一ｐＨ条件下的研究结果表明,ＰＥＩ比后两能更好地抑制ＬＡＳ钙盐的形成。同时一聚合物在不同ｐＨ条件下的研究发现,ＰＥＩ只有在一个适当的ｐＨ范围内,即自身具有适当的电荷密度,才能很好地发挥其上述作用。在体系中存在一定量的ＡＥＯ３条件下,也观察到了ＰＥＩ在抑制     

用离子对高效液相色谱法测定直链烷基苯磺酸的碳数分布和平均相对分子质量

用离子对高效液相色谱法研究了直链烷基苯的碳数分布 ,从而建立了一个快速、准确直接测定烷基苯磺酸平均相对分子质量的新方法。所测得的烷基苯磺酸的平均相对分子质量与气相色谱法相比 ,相对偏差不大于 0 .1 %。一次测定的时间仅需半小时。