一种有用的锌配合物的制备研究及其可能机理

二（１,３－二硫杂环戊烯－２－硫酮－４,５－二硫）合锌酸的四级铵盐（以下简写为［Ｚｎ］）是合成有机超导材料ＢＥＤＴ－ＴＴＦ［１］的原料,它是合成含硫取代基ＴＴＦ的重要试剂。其合成文献［２～５］报道较多,但产率均不高,且操作要在惰性气氛或无溶剂下进行。本文对［Ｚｎ］制备工艺进行了研究,取得了满意结果,并提出了可能机理。合成路线如下：ＣＳ２＋ＮａＤＭＦＳＳＳＮａＳＳＮａＺｎＣｌ２,Ｅｔ４ＮＢｒＣＨ３ＯＨ,ＮＨ３·Ｈ２Ｏ（Ｅｔ４Ｎ）２ＳＳＳＳＳＺｎＳＳＳＳＳ　［Ｚｎ］１　实验将ＤＭＦ滴加到１８ｍＬ二硫…     

CALIXE［4］ARENE AS A TEMPLATE FOR CONTROLLING REGIOCHEMISTRY OF PHOTODIMERIZATION OF 9－SUBSTITUTED AN

ＣＡＬＩＸＥ［４］ＡＲＥＮＥＡＳＡＴＥＭＰＬＡＴＥＦＯＲＣＯＮＴＲＯＬＬＩＮＧＲＥＧＩＯＣＨＥＭＩＳＴＲＹＯＦＰＨＯＴＯＤＩＭＥＲＩＺＡＴＩＯＮＯＦ９－ＳＵＢＳＴＩＴＵＴＥＤＡＮＴＨＲＡＣＥＮＥＬＩＹＩ；ＴＯＮＧＺＨＥＮ－ＨＥ（ＣＨＥＮ－ＨＯＴＵＮＧ...     

新试剂2-[2''''-(6''''-取代苯并噻唑)偶氮]-5-二甲氨基苯甲酸的合成及其光度特性的研究

合成了６种２－［２＇－（６’－取代苯并噻唑）偶氮］－５－二甲氨基苯甲酸（６－Ｒ－ＢＴＡＭＢ，其中Ｒ＝ＣＨ３，ＯＣＨ３，Ｃｌ，Ｂｒ，ＣＨ３ＳＯ２，ＮＯ２）新试齐４。初步研究了６－ＣＨ３－ＢＴＡＭＢ与Ｆｅ（Ⅱ）、Ｃｏ（Ⅱ）、Ｎｉ（Ⅱ）、Ｃｕ（Ⅱ）和Ｐｄ（Ⅱ）等离子的络合显色反应的光度特性。     

顺,反异构钼硫簇合物[（C2H5）4N]2[Mo2S4（SCH2CH2S）2]的合成,结构和性质...

用（ＮＨ４）２ＭｏＳ４，Ｃｏｃｌ２，ＮｉＣｌ２，ＨＳＣＨ２ＣＨ２ＳＨ和Ｅｔ４ＮＢｒ在ＣＨ３ＯＨＣＨ３ＯＮａ溶液中反应，得到了顺Ａ，反Ｂ异构体的原子族化合物「（Ｃ２Ｈ５）４Ｎ」２，ＰＭｏ２Ｓ４（ＳＣＨ２ＣＨ２Ｓ）２「的晶体。     

5，10，15，20－四（4－甲氧基－3－磺酸苯基）卟啉铑、钌、钯金属配合物的合成及光助还原水放氢的研究

一种合成铑、钌、钯卟啉配合物的简便方法。合成了３种新配合物：Ｒｈ（ＤＭＦ）２［Ｔ（４－ＭＯＰ）ＰＳ］·９Ｈ２Ｏ、Ｒｕ（ＣＯ）２（ＤＭＦ）［Ｔ（４－ＭＯＰ）ＰＳ］·１５Ｈ２Ｏ、Ｐｄ（ＤＭＦ）２［Ｔ（４－ＭＯＰ）ＰＳ］·１８Ｈ２Ｏ。元素分析、电子光谱、红外光谱和放氢功能的研究证明Ｒｈ（Ⅱ）配合物具有较好的光敏性。     

农药新化合物(杀菌剂)专利文摘(1999年1月～1999年6月)

苯甲氧苯基环丙烷化合物作为杀菌杀虫剂ＥＰ８８９０２４（Ｒｏｈｍ＆Ｈａｓｓ）１（３羟基苯基）２苯基环丙烷α［２（溴甲基）苯基］β甲氧基丙烯酸甲酯以及ＫＯＨ在ＤＭＦ中搅拌得到５９％的３甲氧基２［２［３（２苯基环丙基）苯氧甲基］苯基］丙酸甲酯对黄瓜Ｓｐｈａｅｒｏｔｈｅｃａｆｕｌｇｉｎｅａ有防效。ＯＣＨ２ＣＨＣＨ３ＯＣＨ２ＣＯＯＭｅ［（氨基苯氧苯基）乙酰胺基］异噻唑及吡啶化合物杀虫杀菌剂（ＢａｙｅｒＡＧ）ＤＥ１９７２７１６２２－５ｇ４氯３甲基５［４（４硝基苯氧基…     

1－苯基－5－巯基四氮唑对胶态金催化Co（Ⅲ）络合物氧化对苯二胺彩显剂的反应的影响

本文在碱性介质中，研究了ＰＭＴ（１－苯基－５－巯基四氮唑）存在时胶态金催化Ｃｏ（ＮＨ＿３）＿６Ｃｌ＿３氧化对苯二胺彩显剂（ＰＰＤ）的动力学，反应跟踪是通过可见紫外分光光度计监测ＰＰＤ的完全氧化产物，ＱＤＩ的显色反应来进行的。结果表明，在ｐＨ为１０．２０，且胶态金的初始浓度一定时，ＰＭＴ对反应初始速率有较大的影响：ＰＭＴ的初始浓度［ＰＭＴ］。较小时，对反应有抑制作用：而［ＰＭＴ］。较大时，对反应有促进作用。通过在无ＰＭＴ、低［ＰＭＴ］。高［ＰＭＴ］。时对上述反应动力学的测定，我们推测ＰＭＴ对反应的抑制－促进作用是由于ＰＭＴ在胶态金上吸附状态的变化造成的。实验表明，当胶态金的初始浓度一定时，ＰＭＴ对［Ｃｏ（ＮＨ＿３）＿５Ｃｌ］Ｃｌ＿２氧化ＰＰＤ的反应也有类似作用。     

溶胶—凝胶法合成了BaAl2Si2O8超细粉末的研究

以Ｂａ（ＯＨ）２．８Ｈ２Ｏ，Ａｌ（ＮＯ３）３．９Ｈ２Ｏ，ＴＥＯＳ为原料，采用溶胶－凝胶法制备ＢａＯ－Ａｌ２Ｏ３－ＳｉＯ２三元系粉末，研究了不同因素对生成稳定溶胶和胶化时间的影响，用ＴＧ－ＤＴＡ，ＸＲＤ研究了溶胶－凝胶的热处理过程，用ＴＥＭ观察了粉体的粒径。     

A3钢表面有机膦合钼聚多酸盐转化膜的研究

由Ｎａ２ＭｏＯ４·２Ｈ２Ｏ和Ｎａ２ＨＥＤＰ·５Ｈ２Ｏ合成了有机膦合钼聚多酸盐Ｎａ８［（ＨＥＤＰ）２Ｍｏ５Ｏ２１］·５Ｈ２Ｏ。用Ｎａ８［（ＨＥＤＰ）２Ｍｏ５Ｏ２１］·５Ｈ２Ｏ的溶液处理Ａ３钢，获得了具有一定耐蚀性的黄色转化膜，适宜的工艺条件为：浓度１６ｇ·Ｌ－１，ｐＨ３．５，温度５０℃，时间８０ｓ。本文还报告了膜层的ＸＰＳ和ＡＥＳ分析结果。     

阳离子P（BA—St—MBDM）共聚物乳液的合成及其抗静电性能

以丙烯酸丁酯（ＢＡ）、苯乙烯（Ｓｔ）和甲基丙烯酰氧乙基，二甲基，丁基溴化铵盐（简称ＭＢＤＭ、（ＣＨ２＝ＣＣＨ３－ＣＯＯＣＨ２Ｎ（ＣＨ３）２－ｎＣ４Ｈ９）＾＋Ｂｒ＾－）为共聚单体，Ｎ－甲基－Ｎ－十六烷基吗啉硫酸甲酯盐作乳化剂进行自由基型乳液聚合，研究了影响聚合速度、共聚物［η］和乳液稳定性的因素，合成了一系列稳定的阳离子共聚物乳液。所得乳液经稀释后对不同织物进行处理，处理后的织物具有良好的抗静电性和     

Effects of calcination condition on expansion property of MgO-type expansive agent used in cement-based materials

Previous research indicated that the expansion property of MgO-type expansive agent (MEA) depended strongly on the calcining conditions, i.e. kiln temperature and residence time. However, the intrinsic effect of calcination condition on the expansion property of MEA has not been clearly demonstrated. In the present work, the effects of calcination condition on the microstructure, hydration activity, and expansion property of MEA have been investigated, and their correlations are also studied. Results indicate that the microstructure of MEA is the intrinsic factor that controlling its expansion property, which is influenced by the calcination condition. MEA produced under higher temperature and longer residence time has less interior pores, larger crystal size of MgO, and smaller specific surface area, thus resulting in lower hydration activity and slower expansion at early age, but larger “ultimate” expansion at late age. While, a new expansion model of MEA is proposed to explain these results.     

Material and environmental parameter effects on the leaching of cement pastes: Experiments and modelling

Results already published on the leaching of cement pastes have shown that the kinetics depends sensitively on the material and environment. However and because of the variability of the tested materials and leaching protocols, it is difficult to compare these data and quantify the effect of each parameter. In this paper, a large experimental database on the leaching kinetics of cement pastes is built. Four parameters are investigated: type of cement (portland cement, silica fume cement, slag cement, ternary cement with slag and fly ash); water-to-cement ratio (0.5; 0.4; 0.25), temperature (26 °C; 72 °C; 85 °C) and chemical composition of the leaching solution (pure water, mineralised water, ammonium nitrate solution). Firstly, the database is used to calculate the leaching kinetics of the cementitious materials. Secondly, a simplified model predicting the one-dimensional leaching kinetics for other water-to-cement ratios and temperature up to 85 °C is presented.     

Toughening of polypropylene with styrene/ethylene‐butylene/styrene triblock copolymer: Effects of reactive and nonreactive compatibilization

The effects of the compatibilization on the toughening of polypropylene (PP) by melt blending with styrene/ethylene‐butylene/styrene triblock copolymer (SEBS) in a twin‐screw extruder were investigated. The compatibilizers used were an SEBS functionalized with maleic anhydride, a PP functionalized with acrylic acid, and a bifunctional compound, p‐phenylenediamine (PPD). The effects of the compatibilization were evaluated through the mechanical properties and by the determination of the phase morphology of the blends by scanning electron microscopy. Reactive compatibilized blends show up to a 30‐fold increase in impact strength compared to neat PP, which was likely to have been due to the reaction of the bifunctional compound (PPD) with the acid acrylic and maleic anhydride groups, which rendered both morphological and mechanical stability to these blends. The addition of the PPD to the blends significantly changed their phase morphologies, leading to larger dispersed particles' average diameters, probably due to the morphological stabilization at the initial processing steps during extrusion, with the occurrence of the chemical reactions. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1081–1094, 2003     

Photocatalytic degradation of air pollutants — From modeling to large scale application

Indoor as well as outdoor air quality and their limiting values remain a major problem to our present-day society.This paper addresses the modeling of the decomposition process of nitrogen monoxide (NO) on reactive concrete surfaces under the controlled exposition of a UV source. Within this model the external mass transfer of the pollutant and the internal molecule diffusion-reaction were considered. A first-order kinetics equation is derived with respect to the NO concentration and a site-competitive adsorption between NO/NO₂ and water molecules, resulting in a dependence of the reaction kinetics on the relative humidity. Using the proposed model, a reaction rate constant k and an adsorption equilibrium constant K_d can be derived which describe an active paving stone accurately. Experimental results from a self-developed photoreactor with continuous flow mode were used to validate the proposed kinetic expression. Furthermore, the effect of variations in process conditions such as irradiance and relative humidity on the two constants k and K_d is investigated. All modeling work provides a sound foundation for the translation of this process to real outside conditions. In this regard an upcoming project in a Dutch city is described in brief.     

硫氰酸锰及其相关衍生物的合成及化学表征

合成了金属有机配合物非线性光学晶体硫氰酸汞锰，及其相关衍生物，二二甲亚砜合硫氰酸汞锰，乙二醇一甲醚合硫氰酸汞锰，二水合二N，N－二甲基乙酰胺合硫氰酸汞锰，二水合二N－甲基－α－吡咯烷酮合硫氰酸汞锰。采用元素分析，红外光谱以及紫外－可见－近红外透央求我谱分析对其进行了化学表征。     

Design and processing of ZnO doped tricalcium phosphate based materials: Influence of β/α polymorph phase assemblage on microstructural evolution

Tricalcium phosphate (TCP) based biomaterials are excellent candidates in hard tissue engineering due to their similarity to the natural bone composition and outstanding properties. The presence of additives such as (Mg²⁺, Zn ²⁺, F⁻, CO₃²⁻ and/or SiO₄⁻) in solid solution in the structure of TCP, affects the stability of its different polymorphs and therefore the properties of TCP based biomaterials. It is known that the incorporation of zinc in TCP in the non-toxic level stimulates bone growth and its mineralization, hence its interest. Nevertheless its effect on phase assemblage and microstructure evolution has not been clearly established. The main purpose of this study was to synthesize TCP and zinc doped monophasic/biphasic α/β-TCP dense biomaterials, by solid-state sintering process, with different ZnO contents and controlled phase proportions and microstructure on the final material. The effect of ZnO content and sintering temperature on phase assemblage, densification and microstructural evolution has been investigated.     

(SrZrO_3)_(10)(SrTiO_3)_(90)缓冲层对PZT结晶及性能的影响

采用Sol-gel法制备了PbZr0.52Ti0.48O3 (PZT)薄膜,并研究了(SrZrO3)10(SrTiO3)90((SZO)10(STO)90)缓冲层对PZT薄膜结晶和性能的影响.X射线衍射(XRD)结果表明:(SZO)10(STO)90缓冲层对PZT薄膜结晶有取向诱导作用,由(SZO)10(STO)90诱导的PZT薄膜有很强的(111)择优取向,缓冲层将PZT薄膜的取向度α由45.0%提高到了90.1%以上;PZT的(111)择优取向提高了薄膜的电性能,使剩余极化强度Pr从26.8 μC/cm2增大到38.8 μC/cm2.     

Optimizing multiple qualities in as‐spun polypropylene yarn by neural networks and genetic algorithms

This investigation considers a quantitative procedure for determining the values of critical process parameters in melt spinning to optimize the qualities of denier, tenacity, breaking elongation, and denier variance in as‐spun polypropylene yarn. An orthogonal array in the Taguchi method defines the minimum set of parameter‐level combinations that are experimentally tested. The significant process parameters, namely the third extruder barrel temperature, spinning temperature, metering pump speed, and take‐up velocity, are identified on the basis of the analysis of variance and F test. After a confirmation experiment is conducted to ensure the reproducibility of the experimental results, the back‐propagation neural network establishes a continuous system linking 10 process parameters and four qualities. The technique for order preference by similarity to an ideal solution can be used to obtain a performance measure for assessing multiple qualities. The genetic algorithm attempts to find parameter values for optimizing the quality performance, including the denier, tenacity, breaking elongation, and denier variance. Finally, the experimental results demonstrate that the smallest denier, largest tenacity, smallest breaking elongation, and second smallest denier variance of as‐spun polypropylene yarn can be achieved with the proposed approach in melt spinning. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 100: 2532–2541, 2006     

Selective plasma‐induced grafting of polystyrene onto polyolefin blends

Plasma pretreatment has been used to generate reactive radicals and oxygenated groups on polymer surfaces for graft polymerization. The polymer substrates studied were composed of a polypropylene–polyethylene (PP–PE) copolymer, which was predominantly PP, and also contained blended ethylene–propylene rubber (EPR) as either about 15 or about 60 mol %. A pure PP substrate was also studied for comparison. The grafted polymer was polystyrene (PS). Raman microspectroscopic 2‐dimensional mapping was used to elucidate the role of crystallinity and EPR in the plasma treatment and graft polymerization process. It was found that the plasma pretreatment favored the EPR component of the substrate and the graft yield was related to the EPR content. Crystallinity seemed to have a much less significant effect on the grafting reaction. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 88: 1643–1652, 2003     

Porosity and specific surface area of Roman cement pastes

Mercury porosimetry, water vapour and nitrogen adsorption were used to follow the hydration of Roman cements — belite cements calcined at low temperature. Generally, unimodal distribution of pore sizes was observed, with the threshold pore width decreasing considerably with increasing curing time. An open porous structure with the threshold pore diameter between 0.2 and 0.8 μm and the specific surface area not exceeding 20 m²/g was produced at early ages when quick growth of the C–A–H phases is observed. The surface area reached up to 120 m²/g and the threshold pore width shifted to around 0.02 μm when the subsequent formation of C–S–H gel filled the larger pores. Both mercury porosimetry and water vapour adsorption were found to be capable of following the progress of hydration of the Roman cements with high reliability at least for a comparative evaluation of historic Roman cement mortars and repair materials used in restoration projects.