稀土复合固体酸SO_4~(2-)/Ti-La-O 合成均苯四甲酸四(2-乙基己)酯(Ⅱ)

本文以新型固体酸ＳＯ２－４／Ｔｉ－Ｌａ－Ｏ为催化剂，均苯四甲酸二酐和２－乙基己醇为原料，制备均苯四甲酸四（２－乙基己）酯（ＴＯＰＭ）。研究了催化剂的用量、均苯四甲酸二酐和２－乙基己醇的原料配比，反应时间对酯化反应的影响。确定最佳工艺条件：在１９０℃反应温度下，催化剂用量为３％（以均酐量计）；均苯四甲酸二酐：２－乙基己醇为１３．５（ｍｏｌ）；反应时间为３ｈ。测定ＴＯＰＭ的红外光谱与核磁共振谱，产品收率达９７％，酸值＜０．１ｍｇＮａＯＨ／ｇ，酯含量≥９９％。酯化工艺的产品质量高、收率高、工艺简单具有推广应用价值。     

C_3A 的 Al-O,Ca-O 键与水化活性关系的量子化学研究

通过量子化学的ＳＣＣ－ＤＶ－Ｘα计算方法，分别研究了Ｃ３Ａ分子结构中２种ＡｌＯ４四面体和３种ＣａＯｘ（ｘ＝６，６，９）多面体的价键特性与活性。原子净电荷、键强、电子态密度、ＥＬＵＭＯ以及ΔＥ（ＬＵＭＯ－ＨＯＭＯ）等的计算结果表明：与水反应时，多面体活性大小顺序为Ｃａ（４）Ｏ９＞Ｃａ（１）Ｏ６（或Ｃａ（３）Ｏ６）＞Ａｌ（１）Ｏ４＞Ａｌ（２）Ｏ４。Ｃ３Ａ具有高水化活性主要与弱的Ｃａ－Ｏ键和空洞缺陷有关。     

α－，βi－铁钨硅杂多酸盐异构体的合成和性质

合成了铁钨硅杂多酸盐的４个异构体（ＴＭＡ）_５［α－，β－ＳｉＦｅ（ＯＨ_２）Ｗ_（１１）Ｏ_（３９）］·ｎＨ_２Ｏ（βｉ中的ｉ＝１，２，３），并测试了它们的ＩＲ、ＵＶ光谱，循环伏安谱和极谱，Ｘ－射线粉末衍射谱。结果表明，β－异构体内的三钨组的旋转和铁的不同位置都影响这些性质。实验得出４种阴离子异构体的氧化序为β_１＞β_３＞α＞β_２，，Ｏ_（ｂ／ｃ）→Ｗ荷移跃迁能顺序为α＞β_２＝β_３＞β_１。     

金属卟啉在医学和催化中的应用Ⅰ．卟啉配体的合成与方法改良

用改良的Ａｄｌｅｒ－ｌｏｎｇＯ方法合成了若干卟啉配体，得到铰高的收率，所合成的卟啉及所得产率分别为（１）ＴＰＰ２７．３％；（２）Ｔ（３，４，５－３ＭｅＯ－Ｐ）Ｐ３０．４％，（３）Ｔ（４—Ｍｅ—Ｐ）Ｐ２３．９％，（４）Ｔ（３，５—２Ｍｅ）Ｐ２２％；（５）Ｔ（４－Ｃｌ－Ｐ）Ｐ２９．８％，合成反应在低于丙酸的回流温度下进行．     

氧缺位铁酸锰分解CO_2成C的研究

空气氧化湿法制备的ＭｎＦｅ２Ｏ４在Ｈ２还原下，生成氧缺位铁酸锰ＭｎＦｅ２Ｏ４－δ（０＜δ＜１），利用ＸＲＤ和Ｍｏｓｓｂａｕｅｒ谱等技术，对它的性质（还原性，晶格常数稳定性）进行了详细地研究，考查了在氧缺位铁酸锰（ＭｎＦｅ２Ｏ４－δ，δ＞１）及ＭｎＯ－ＦｅＯ固溶体下ＣＯ２分解成Ｃ的活性，结果表明（ＭｎＦｅ２Ｏ４－δ，δ＞１）能够有效地分解ＣＯ２成Ｃ，并且在反应以后自身转变成了化学计量的ＭｎＦｅ２Ｏ４，ＭｎＯ－ＦｅＯ分解ＣＯ２以后，一部分变为ＭｎＦｅ２Ｏ４，一部分仍然保持ＭｎＯ－ＦｅＯ固溶体结构     

稀土复合固体酸SO4^2—／Ti—La—O合成均苯四甲酸四（2—乙基己）…

本文以新型固体酸ＳＯ４＾２／Ｔｉ－Ｌａ－Ｏ为催化剂，均苯甲酸二酐和２－乙基己醇为原料，制备均苯四甲酸（２－在己）酯（ＴＯＰＭ）。研究了催化剂的用量、均苯四一酐和２－在己醇的原料配比，反应时间对酯化反应的影响。确定最佳工艺条件；在１９０℃反应温度下，催化剂用量为３％；均苯四甲酸二酐；２－乙基己醇为１：３．５；反应时间为３ｈ。测定ＴＯＰＭ的红外光谱与核磁共振谱，产品收率达９７％，酸值〈０．１ｍｇＮａＯ     

1,4,6,9—四硝基—1,4,6,9—四氮杂双环[4,4,0]癸烷合成工艺改进

以乙二胺和乙二醛为原料，合成了１，４，６，９－四氮杂双环（４，４，０）癸烷（１），反应得率为７７．５％，母体化合物（１）在硝酸－乙酐体系中硝化，制得１，４，６，９－四硝基－１，４，６，９－四氮杂双环（４，４，０）癸烷（２），文中研究了合成母体化合物（１）的缩合总得率高达６４．０％，熔点为２２４￣２３０℃，文中研究了合成母体化合物（１）的缩合反应的机理和影响因素，讨论了母体化合物（１）硝化反应的影响     

有机颜料中间体N—（3‘—氨基—4’—氯代）苯甲酰基—2—甲基—3—？…

以４－氯甲苯为原料，经过氧化，硝化，缩合，还原反应，制成有机颜料中间体Ｎ－（３’－氨基－４‘－氯代）苯甲酰基－２－甲基－３－氯代苯胺，对影响反应的诸因素了讨论，产品总收率为５７．４％。     

卟啉环上的亲核取代：2.溶剂对2—NO2—TPPCu（Ⅱ）与苯？…

研究了溶剂对２－ＮＯ２－５,１０,１５,２０－四苯基卟啉铜（２－ＮＯ２－ＴＴＰＣｕ（Ⅱ）１与苯酚钠反应的影响,发现反应速度、产物分布与所用溶剂有很大关系。在苯酚中反应,主要产物为碳碳键相连的产物２－（２－羟基苯基）－ＴＰＰＣｕ（Ⅱ２（５０％）和２－（４－在苯甲腈、ＤＭＳＯ、ＤＭＦ和吡啶中反应,４的产率分别为５５％、５２％、４７％和１１．７％。实验结果说明,在反应中存在ＳＲＮ１和ＳＮＡｒ的竞争,质子     

4-烷基-1-(4’-氯苯基)-环己烷液晶的合成──宽相变温度液晶研究之一

本文报导了用环己烷、酰氯和氯苯反应，两步反应合成４－烷基－１－（４’－氯苯基）－环己烷液晶。研究了反应历程，确定了产量取决于催化剂和反应条件。制备了两种液晶化合物，其化学结构用红外光谱、质谱、核磁共振谱等测定，中介相特征用差示扫描量热仪确定。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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