N2,N2,N6,N6-四乙基-4-醛基吡啶-2,6-二甲酰胺的合成

以2,6-二甲基吡啶为原料,经KMnO4氧化、二乙胺酰胺化、吡啶环自由基亲核取代反应得到N2,N2,N6,N6-四乙基-4-羟甲基吡啶-2,6-二甲酰胺,然后用Sarret试剂氧化得到标题化合物并探讨了氧化反应的最佳条件,产物结构经1HNMR、IR和MS得到表征.该产物是合成新型吡啶类有机配体的重要中间体.     

CO2,H2,N2在MDEA水溶液中的溶解 度

ＣＯ２、Ｈ２、Ｎ２在ＭＤＥＡ水溶液中的溶解度徐国文张成芳钦淑均（华东理工大学无机化工研究所，上海２００２３７）关键词：ＣＯ２Ｈ２Ｎ２溶解度ＭＤＥＡ１前言国外报道的ＣＯ２溶解度数据［１～９］，布点稀疏，无法满足工程计算及动力学研究之需。王挹薇等采...     

Metal binding properties of poly[N,N,N′,N′-tetrakis(2-hydroxypropyl)ethylenediamine methacrylate]

Summary When incorporated into a polymer hydrogel, the metal chelator, N,N,N,N-tetrakis(2-hydroxypropyl)ethylenediamine (THPED), retains its metal binding properties. The resultant poly(THPED methacrylate) homopolymer is a polybase with displacement binding constants for copper (II) and zinc(II) of-3.11 and-6.55, respectively, as compared to values for THPED of-3.83 and-7.44. The chelating capacity of the polymer for various divalent metal ions at pH 5.5 follows the order Cu>Cd>Co>Zn>Mn, while calcium and magnesium do not bind. Metal ion release curves indicate that after 30 hours, Cd(II), Co(II), Zn(II), and Mn(II) are released at a slow, steady rate, while Cu(II) is not released under experimental conditions.     

H2,CO,N2,O2和CH4在碳膜中的扩散

Diffusion of pure H2,CO,N2,O2and CH4 gases through nanoporous carbon membrane is investigated by carrying out non-equilibrium molecular dynamics(NEMD)simulations.The flux,transport diflusivity and acti-vation energy for the pure gases diffusing through carbon membranes with various pore widths were investigated.The simulation results reveal that transport diffusivity increases with temperature and pore width.and its values port diflusivities are comparablc With that of Rao and Sircar(J.Membr.Sci.,1996).indicating the NEMD simula-tion method iS a good toO]for predicting the transport diflusivities for gases in porous materialS.which iS always difficult to be accurately measured by experiments.     

2—氯—N,N—二甲基菸酰胺的合成

２┐氯┐Ｎ，Ｎ┐二甲基菸酰胺的合成刘长令＊邹本勤邹平吾（沈阳化工研究院，沈阳１１００２１）２－氯－Ｎ，Ｎ－二甲基菸酰胺（Ⅰ）是合成超高效磺酰脲类除草剂烟黄隆（ｎｉｃｏｓｕｌｆｕｒｏｎ）的重要中间体，其合成方法如下：ＮＣＯ２ＨＨＯＡｃ，Ｈ２Ｏ２△→ＮＯ...     

Solvent Extraction Studies of Rare Earths from Thiocyanate Medium with N,N,N´,N´-tetra(2-ethylhexyl) diglycolamide

The extraction behavior of rare earth (RE) elements from thiocyanate medium by N,N,N^’,N^’-tetra(2-ethylhexyl) diglycolamide (TEHDGA), a neutral extractant, has been investigated and the optimum conditions for their separations were determined. Isodecyl alcohol was used as phase modifier and a concentration of 5%(v/v) was found sufficient to mitigate third phase formation under our experimental conditions. The extraction mechanism of RE with TEHDGA was established by analyzing distribution data with slope analysis technique and showed the formation of a neutral species, RE(SCN)₃.2TEHDGA, in the organic phase. The extraction of rare earth decreased with increase in temperature indicating exothermic nature and the enthalpy change (ΔH) obtained for Y(III) was ?14.27 kJ/mol. Among various stripping agents studied, oxalic acid was found to be efficient in quantitative stripping of rare earths from TEHDGA. The extraction efficiency for all the rare earths by TEHDGA was also investigated. High separation factor of 6.4 for Er/Y pair at 0.03 M thiocyanate has indicated the feasibility of using TEHDGA as extractant to separate Y from heavy rare earths, in particular Er, from thiocyanate medium.     

N,N,N-三(2-甲基苯并咪唑)胺的新合成方法

以乙二醇为溶剂，由氨三乙酸与邻苯二胺反应，制得N，N，N-(2-甲基苯并咪唑)胺。此合成方法产率高，操作容易控制，污染小。     

阳极产生的Sn^2＋引发聚合（N,N,N—三甲基—N—2—甲基丙烯酰氧乙基）氯化 …

研究了使用新的合成技术和引发剂Ｓｎ＾２＋进行ＤＭＡＥＭ－ＭＣ阳离子聚合过程，Ｓｎ＾２＋由牺牲阳极产生。在只有Ｓｎ材作电极的间歇反应器中配制聚合物，获得了电解法制备聚合物转化率和平均分子质量的影响因素。一方面，这些结果表明搅拌速度、初始ｐＨ值、电流密度和电极构成对转化率和聚合物分子质量都有重要影响；另一方面，温度和单体浓度在电化聚合过程中的影响虽是次要的，然而这两种因素在传统化学方法中影响最大。理想     

N,N,N′,N′-四苯基联苯胺的合成新方法

以联苯胺和二苯胺为原料，经两步反应合成了N，N，N′，N′－四苯基联苯胺（TPB)。与已报道的方法相比较，该方法具有产率高、操作简单、原料价格低廉等优点。     

N,N,N',N'-四(2-羟基丙基)己二酰胺的合成研究

使用己二酸二甲酯和二异丙醇胺为主要原料合成了N,N,N',N'-四(2-羟基丙基)己二酰胺固化剂。优化了催化剂种类、用量、原料配比、反应温度、反应时间对产品收率的影响。结果表明:在物料质量3%的氢氧化钾作为催化剂的条件下,n(己二酸二甲酯)∶n(二异丙醇胺)=1∶2.1,减压状态下150℃反应8 h,产品最终收率和纯度分别为55.2%和98%,最终产品借助液相色谱和红外光谱进行了表征,并对比了与HAA的涂膜性能。     

4—2—N,N—二甲胺基）乙氧基二苯甲酮的合成

4-(2-N,N-二甲胺基)乙氧基二苯甲酮是抗肿瘤新药托瑞米芬的中间体。它主要由苯甲酰氯和苯酚制备苯甲酸苯酯,然后重排、醚化所得。本文系统地介绍了该产品的合成方法,并提出合成改进方向及其优越性。     

N,N—双（2—羟丙基）苯胺的合成

以苯胺及环氧丙烷为原料合成了Ｎ，Ｎ－双（２－羟丙基）苯胺，讨论了合成工艺条件对产物性能指标的影响，简单介绍了其用作聚氨酯扩链剂的使用效果。     

Non-Dispersive Solvent Extraction of Neodymium using N,N,N’,N’-Tetraoctyl Diglycolamide (TODGA)

Hollow fiber contactor was used to study non-dispersive extraction (NDSX) of Nd³⁺ ions from aqueous solutions. N,N,N′,N′-tetraoctyl diglycolamide (TODGA) diluted with n-dodecane was used as the organic phase with di-n-hexyl octanamide (DHOA) as the phase modifier. The role of cations (H⁺/Na⁺) on the transport of Nd³⁺ ions has been investigated for this system. It was observed that H⁺ ion has a significant role to play in the Nd³⁺/TODGA complexation reaction. A mathematical model has also been developed to simulate the NDSX process in a hollow fiber contactor. A comparison has also been made between extraction profiles from the NDSX process and the hollow fiber supported liquid membrane (HFSLM) process. It was observed that NDSX gave comparatively faster rates of extraction in the presence of H⁺ ions but slower in the absence of H⁺ ions.