电子供体影响Cr（Ⅵ）光还原速度的ESR／全息法研究

分别用电子自旋共振（ＥＳＲ）法和全息法研究了六价铬离子Ｃｒ（Ⅵ）在不同电子供体－二甲基亚砜（ＤＭＳＯ）和Ｎ，Ｎ＇－二甲基甲酰胺（ＤＭＦ）－作用下向三价铬离子Ｃｒ（Ⅲ）的光转换速度。两种方法得到相同的结论：ＤＭＳＯ和ＤＭＦ都不同程度地加速了Ｃｒ（Ⅵ）光致还原速度，ＤＭＳＯ的效果更加显。     

酚醛树脂—重氮树脂或重氮盐的感光性复合物

在水溶液中制备了酚醛树脂与重氮盐（ＰＲ－ＤＳ）和重氮树脂（ＰＲ－ＤＲ）的复合物。与重氮盐或重氮树脂同时加入硫酸成功的抑制了重氮基与酚醛树脂的偶联反应。复合物ＰＲ－ＤＲ在有机溶剂中的溶解度大于ＰＲ－ＤＲ，其在ＤＭＦ中的溶解度可达到４．４６％。两种复合物都具有很高的光敏性。在紫外光照下，ＰＲ－ＤＲ的离子键将转化为共价键从而不溶于ＤＭＦ，因而可用作光成像材料。     

电子供体影响Cr（VI）光还原速度的ESR／全息法研究

分别用电子自旋共振（ＥＳＲ）法和全息法研究了六价铬离子Ｃｒ（ＶＩ）在不同电子供体─—二甲基亚砜（ＤＭＳＯ）和Ｎ，Ｎ′－二甲基甲酰胺（ＤＭＦ）──作用下向三价铬离子Ｃｒ（Ⅲ）的光转换速度。两种方法得到相同的结论：ＤＭＳＯ和ＤＭＦ都不同程度地加速了Ｃｒ（ＶＩ）的光致还原速度，ＤＭＳＯ的效果更加显著。     

英语翻译技巧（28）

英语翻译技巧（２８）涂学忠（化工部北京橡胶工业研究设计院１０００３９）ＰｎｅｕｍａｔｉｃＴｙｒｅｓＢＹＧ．Ｆ．ＭＯＲＴＯＮＡＮＤＧ．Ｂ．ＱＵＩＮＴＯＮ１ＩＮＴＲＯＤＵＣＴＩＯＮＤｕｒｉｎｇｔｈｅｌａｓｔｄｅｃａｄｅ，ｃｈａｎｇｉｎｇａｔｔｉｔｕｄｅｓ...     

荧光探针法研究壳聚糖在水溶液中的聚集态行为

本文用两种结构类似的分子内电荷转移化合物,３羟基６甲基４‘Ｎ,Ｎ二甲氨基黄酮丙酸酯（ＰＦ）和３甲氧基４‘Ｎ,Ｎ二甲氨基黄酮（ＤＭＭＦ）,作为荧光探针,研究了壳聚糖在水溶液中的聚集状态．研究结果发现,当壳聚糖浓度增大到１×１０－３ｋｇ／Ｌ或以上时,ＰＦ在４３０ｎｍ处的荧光强度有一突增现象．利用ＤＭＭＦ作为荧光探针,研究了它在不同壳聚糖溶液中的稳态偏振,研究发现,随着壳聚糖浓度的增大,其偏振度也明显增大．这些结果进一步证实了壳聚糖在水溶液中的聚集特性,同时也为分子内电荷转移化合物———黄酮类化合物作为荧光探针研究生物大分子在水溶液中的构象提供了有益的尝试．     

(7-N,N-二甲氨基)香豆素基-3-甲酸乙酯/二芳基碘鎓盐光敏引发聚合反应体系

本工作合成了（７－Ｎ,Ｎ－二甲氨基）香豆素基－３－甲酸乙酯（ＥＤＡＣＦ）光敏剂．在光作用下,激发态的ＥＤＡＣＦ分子与二芳基碘盐ＯＰＰＩＰ分子之间发生电子转移反应,伴随发生ＥＤＡＣＦ的褪色反应和ＯＰＰＩＰ的光解反应,后者生成具有引发活性的芳基自由基．由于ＥＤＡＣＦ具有ＣＴ态特性,使得它与ＯＰＰＩＰ之间的光电子转移反应速度随着溶剂极性增加明显减慢．ＥＤＡＣＦ／ＯＰＰＩＰ体系可有效地引发ＭＭＡ聚合反应,聚合反应动力学方程为Ｒｐ＝Ｋ［ＯＰＰＩＰ］０．４７［ＥＤＡＣＦ］０．４２［ＭＭＡ］０．９８．     

苯－噻吩－二甲基甲酰胺大沸点差体系的汽液平衡

用鼓泡平衡釜在不同温度下测定了苯－噻吩－ＤＭＦ（Ｎ，Ｎ－Ｄｉｍｅｔｈｙｌｆｏｒｍａｍｉｄｅ，二甲基甲酰胺）体系的二元和三元体系的汽液平衡（ＶＬＥ）数据，所测数据均通过热力学一致性检验，并用多种模型作了关联，其结果令人满意。根据Ｃｏｎｄｅｒ和Ｐｕｒｎｅｌｌ提出的有限浓度普遍化保留理论导出了有限稀释活度系数工作方程，用色谱仪测定了苯－ＤＭＦ和噻吩－ＤＭＦ两个二元体系在稀浓度区的活度系数，结果证明在全浓度范围内Ｗｉｌｓｏｎ模型对本研究体系是完全适用的。     

催化剂和芳烃及硫对1—甲基萘以及二（1—萘）甲烷反应的影响

在温和反应条件下探讨了催化剂,芳烃及硫对金属催化剂催化的１－甲基萘（１－ＭＮ）及二９１－萘）甲烷（ＤＮＭ）加氢反应的添加效应,结果表明：Ｆｅ和Ｎｉ对促进１－ＭＮ和ＤＮＭ的加氢非常有效,而供氧溶剂和多环芳烃却显著降低１－ＭＮ和ＤＮＭ的加氢转化率,加入硫显著障碍了加氢反应,却大大促进芳烃加氢裂解反应,初步探讨了有关的反应机理。     

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...     

德国玻璃钢工业见闻

德国玻璃钢工业见闻马越群（金陵巴斯夫树脂有限公司南京２１００３８）ＡＧＬＡＮＣＥＡＴＧＥＲＭＡＮＦＲＰＩＮＤＵＳＴＲＹ￥ＭａＹｕｅｑｕｎ（Ｊｉｍｉｎｇ－ＢＡＳＦＲｅｓｉｎｓＣｏ．Ｌｔｄ．）１引言玻璃钢／复合材料自１９３２年在美国最早问世至今，已有６０...     

Optimization of solvent crystallization process in obtaining high purity anthracene and carbazole from crude anthracene

Solvent crystallization is the main method used for preparing anthracene and carbazole from the crude anthracene. The key to the optimization of this method is improving the solubility selectivity of the solvent by means of solvent modulating and process optimization. In this study, the solubility of anthracene, phenanthrene, and carbazole in xylene, dimethylformamide (DMF), DMF with amine/amide, isopropanolamine, and chlorobenzene is examined and the solid‐liquid ternary anthracene–carbazole–DMF/(DMF+19.96% isopropanolamine) system phase diagram is determined and applied in the solvent crystallization process. The results showed that the solubility selectivity of xylene increases with increased temperature. Also, selectivity increases with an increase of the amount of isopropanolamine in the mixture of DMF and isopropanolamine, while decreases with increased temperature. Through multiple washings of crude anthracene with xylene, DMF+19.96% isopropanolamine, and chlorobenzene, it was possible to obtain anthracene and carbazole of purity higher than 98 wt %. © 2013 American Institute of Chemical Engineers AIChE J, 60: 275–281, 2014     

蒽在N,N-二甲基甲酰胺、N,N-二甲基乙酰胺和1-N-2-甲基吡咯烷酮中溶解度的测定与关联

用平衡法测定了蒽在N,N-二甲基甲酰胺(DMF)、N,N-二甲基乙酰胺(DMA)和1-N-2-甲基吡咯烷酮(NMP)中20—95℃下的溶解度;应用UNIFAC法建立了蒽在DMF、DMA和NMP中的溶解度的模型方程,并采用MATLAB语言对模型方程进行了求解,计算得到了蒽在DMF、DMA和NMP中的溶解度。结果表明,实验测定值与模型计算值总体规律吻合较好,蒽在DMF、DMA和NMP中溶解度模型计算值和实验值的平均偏差分别为17.56%,15.24%和29.65%,UNIFAC可以预测蒽在DMF、DMA和NMP中的溶解特性,为蒽的溶剂法分离过程中溶剂的选择和工艺优化提供了一定的理论依据。     

蒽和咔唑在有机溶液中溶解度的研究

利用液 -固相平衡装置 ,测定了蒽和咔唑分别在 DMF、吡啶、苯和甲苯中的溶解度并作出溶解度曲线 .发现 DMF对蒽和咔唑的分离具有很好的效果 ,对工业上应用有重大意义 .测温误差为 0 .0 5 K,还从理论上对溶解度进行了探讨     

Determination of crystalline thermodynamics and behavior of anthracene in different solvents

To screen suitable solvents for anthracene crystallization, the solubilities of anthracene and metastable zone width were determined in four different solvents, N,N‐dimethyl formamide (DMF), xylene, tetrachloroethylene, and diethylene glycol dimethyl ether from 30 to 80 °C at atmospheric pressure using a self‐made crystallizer. The cooling modes, solvents, and the effects of carbazole on the solvent crystallization process of anthracene were also investigated. The composition of mother liquors and solid products were measured by gas chromatography; the solids were analyzed by scanning electron microscope, X‐ray diffractometer, differential scanning calorimetry, granulometer, and fluorescence spectrometer. The results showed that a uniform anthracene crystal was obtained when using DMF under the forced circulation cooling mode. Solid solution of anthracene and carbazole was initially detected in solvent crystallization. The existence of carbazole in solution has an obvious effect on the crystal morphology of anthracene, to some extent, is beneficial to the crystal growth of anthracene. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2160–2167, 2018     

Synthesis of 9,10-Bis-hetaryl anthracenes and their application on polyester fibres as disperse dyes

9,10-Dibromoanthracene ( 2 ) obtained from anthracene by bromination was reacted with cuprous cyanide in refluxing DMF to obtain 9,10-dicyanoanthracene ( 3 ). The key intermediate ( 3 ) was condensed with orthophenylenediamine ( 4a ), ortho-aminophenol ( 4b ) and dicyanodiamine ( 6 ) to give 9,10-bis(benzimidazol-2-yl)anthracene ( 5a ), 9,10-bis(benzoxazol-2-yl)anthracene ( 5b ) and 9,10-bis(4,6-diamino-S-triazin-2-yl)anthracene ( 5c ), respectively. The spectral properties of 5a-5c were studied. These compounds, when applied as disperse dyes on polyester fibres, gave excellent results.     

粗蒽精制方法述评

综述了各种粗蒽精制方法，比较了其优缺点，特别介绍了乳化液膜法精制粗蒽新工艺及其应用前景。     

AoGDW肽固相合成工艺研究

用Wang树脂,以HBTU/HOBT/DIEA(1:1:2),HOBT/DIC(1:1)为缩合剂,DCM、DMF、NMP、THF、DMF/DCM(1:1)、DMF/DCM(1:7)为溶剂,Fmoc-氨基酸物质的量为4倍,不同的反应浓度,从而筛选出AoGDW肽合成的最佳缩合剂、溶剂、反应浓度.树脂-肽复合物用TFA/H2O/TIS(95:2.5:2.5)为裂解液,粗肽经ESI/MS鉴定,用RP-HPLC分离纯化.结果证明:Wang树脂在以HOTU/HOBT/DIEA(1:1:2)为缩合剂,以DCM,DMF/DCM(1:1),DMF/DCM(1:7)为溶剂,反应浓度在0.124～0.248 mol/L时,氨基酸的连接率及肽的最终产率最高.粗肽经ESI/MS分析,证明相对分子质量与理论值一致;经RP-HPLC纯化,获得纯度为99.7%的目标肽.     

Solubility parameter-based analysis of polyacrylonitrile solutions in N,N-dimethyl formamide and dimethyl sulfoxide

The physical properties of the solutions of polyacrylonitrile (PAN) in N,N-dimethyl formamide (DMF) and dimethyl sulfoxide (DMSO) were characterized in terms of solubility parameter. The physical properties were largely determined by individual solubility parameters, particularly the polar term, rather than overall solubility parameter. With increasing temperature, the intrinsic viscosity and hydrodynamic diameter of dilute solutions were decreased but the dynamic viscosity (η′) of concentrated solutions was increased. Of the two solvents, these phenomena were more pronounced with DMF; DMF gave greater η′ and yield stress than DMSO. When the polymer solutions were dried at 25 °C DMSO generated a cocontinuous structure whereas DMF produced a dispersed morphology. In addition, DMF dissolved PAN faster than DMSO, and the dissolution process followed a mechanism analogous to S_N2 reaction.     

精蒽提纯溶剂的选择和应用

精蒽作为生产蒽醌的原料随蒽醌用量的增加显得极为重要。本文论述了精蒽提纯溶剂选择的理论根据和试验依据,研究了以DMF及溶剂A为溶剂提高精蒽收率的方法。通过生产应用试验证明了小试及中试成果,可获得良好的经济及社会效益。     

WATER SOLUBILITY OF SOLID SOLUTION OF PHENANTHRENE AND ANTHRACENE MIXTURE

Water solubilities of solid solution forms of phenanthrene and anthracene in water between 283 K and 308 K were measured by the shake flask method. The present experimental results showed that solid composition affected the water solubility of the solid solution as follows: The saturation concentration of a solute decreased with an increase in the amount of the other in the solid phase. In particular, this solubility decrement was remarkable within a low concentration range of anthracene in the solid solution. Within the same range, furthermore, the temperature dependence of the anthracene water solubility increased while that of phenathrene decreased. Finally, we tried to calculate the solubility behavior, based on the fugacity ratio between the liquid and solid phases and an activity coefficient model.