GeO2-PbF2-ZnF2玻璃的Raman光谱和结构

用Ｒａｍａｎ光谱研究了ＧｅＯ２－ＰｂＦ２－ＺｎＦ２系统玻璃结构。结果表明,这种氟氧混合体系玻璃主要以［ＧｅＯ４－ｘＦｘ］四面体、［ＺｎＦ４］和［ＺｎＯ４］单元共同构成三维网络。网络中非桥氧或［ＧｅＯ４－ｘＦｘ］四面体的数量随Ｆ－／Ｏ２－比例增加而增加,而Ｆ－／Ｏ２－比例一定时,Ｚｎ２＋则能提高［ＧｅＯ４－ｘＦｘ］四面体的聚合度。     

ZnO－PbO－GeO_2三元系统玻璃Raman光谱的研究

本文测定了ｘＺｎＯ·（３０－ｘ）ＰｂＯ·７ＯＧｅＯ２，１０ＺｎＯ·（１５＋ｘ）ＰｂＯ·（７５－ｘ）ＧｅＯ２，ｘＺｎＯ·３０ＰｂＯ·（７０－ｘ）ＧｅＯ２三个系列玻璃的Ｒａｍａｎ光谱，研究指出该系统以［ＺｎＯ４］和［ＧｅＯ４］共同构成三维网络，当ＧｅＯ２含量低时，ＰｂＯ亦进入玻璃网络。     

玻璃结构中P^5＋离子配位状态的研究

利用红外光谱和喇曼光谱研究了Ｐ＾５＋离子在ＰｂＯ－Ｂｉ２Ｏ３－Ｐ２Ｏ５玻璃结构中的配位状态。结果表明：当Ｐ２Ｏ５的引入量小于３１ｍｏｌ％时,获得玻璃的结构中含不带Ｐ＝Ｏ双键的单个［ＰＯ４］四面体,这些四面体之间通过四个顶角氧而与Ｐｂ＾２＋,Ｂｉ＾３＋离子联接;而当Ｐ２Ｏ５的引入量高于５０ｍｏｌ％时,获得玻璃的结构中含带Ｐ＝Ｏ双键的［ＰＯ４］四面体,这些［ＰＯ４］四面体通过公共氧（桥氧）而形成［ＰＯ     

GeO2—PbF2—ZnF2玻璃的Raman光谱和结构

用Ｒａｍａｎ光谱研究了ＧｅＯ２－ＰｂＦ２－ＺｎＦ２系统玻璃结构。结果表明,这种氟氧混合体系玻璃主要以「ＧｅＯ４－ｘＦ」四面体、「ＺｎＦ４」和「ＺｎＯ４」单元同共构成三维网络。网络中非桥氧或「ＧｅＯ４－ｘＦｘ」四面体的数量随Ｆ－／Ｏ＾２－比例增加而增加,而Ｆ＾－／Ｏ＾２－比例一定时,Ｚｎ＾２＋则能提高「ＧｅＯ４－ｘ－Ｆｘ」四面体的聚合度。     

双核镉穴合物的合成及晶体结构研究

在Ｃｄ（ＣｌＯ４）２·６Ｈ２Ｏ存在下，三（２－氨基乙基）胺（ｔｒｅｎ）与２，６－二甲酰基－４－氯苯酚钠进行［２＋３］希夫碱缩合成了一个全新的双核镉（Ⅱ）穴合物。穴合物的晶体结构，光谱表征数据及摩尔电导表明，穴合物中的两个镉离子通过三个酚氧基桥连。每个镉离子位于七配位环境中（Ｎ４Ｏ３），其配位构型是一个非帽的三角双锥结构。     

水溶液中Fe2（SO4）3与KI反应的研究

研究了不同温度下水溶液中Ｆｅ２（ＳＯ４）３与ＫＩ（Ｎａ２Ｓ２Ｏ３,淀粉）的反应速率。在１５－２９℃范围内,Ｆｅ２（ＳＯ４）３与ＫＩ（Ｎａ２Ｓ２Ｏ３,淀粉）的反应速率比相同条件下的Ｆｅ（ＮＯ３）３反应体系慢３－４倍。使用７２１－分光光度计了水溶液中Ｆｅ与ＳＯ＾２４－离子配合物的配位比。结果表明,在ＰＨ＝１．５及２１℃时,存在Ｆｅ２（ＳＯ４）３的二聚体Ｆｅ４（ＳＯ４）６。     

HNO3溶剂中的AN共聚反应其机理探讨

对于硝酸（ＨＮＯ３）溶剂中以过硫酸铵－乙酰基丙酮－硝酸高铁［（ＮＨ４）Ｓ２Ｏ８－ＣＨ３ＣＯＣＨ２ＣＯＣＨ３－Ｆｅ（ＮＯ３）３］氧化还原体系为引发剂的丙烯腈－丙烯酸甲脂－甲叉丁二酸［ＡＮ－ＭＡ－ＩＡ］的三元共聚反应进行了研究。在反应动力学的实验基础上对反应机理作了分析，得出如下结论：聚合反应速率与单体浓度的１．５次方及过硫酸铵［Ｆｅ（ＮＯ３）３］浓度关系水大；分子与单体浓度的０．５次方成正比，与（Ｎ     

聚电解质溶液性质的研究——聚苯乙烯磺酸溶液在不同温度中的粘滞行为

本实验叙述了制备聚苯乙烯磺酸溶液的过程。在常压、无外加盐时，测定了２０～４０℃变化区间ＰＳＳＨ的比浓粘度对应浓度的的数据。结果表明温度Ｔ的影响是不可忽略的。用经验公式：ηｓｐ／Ｃ＝［８．４８７×１０－１＋１．５１７×１０－２（Ｔ－２０）－６．６９４×１０－４（Ｔ－２０）２］＋［８．２５４×１０－１＋２．６２９×１０－２（Ｔ－２０）－１．８０６×１０－４（Ｔ－２０）２］Ｃ－１－［７．０２６×１０－２＋２．３６０×１０－３（Ｔ－２０）－１．９６３×１０－４（Ｔ－２０）２］Ｃ－２＋［２．１７６×１０－３＋６．４２３×１０－５（Ｔ－２０）－５．０８９×１０－６（Ｔ－２０）２］Ｃ－３描述ＰＳＳＨ在该温度范围Ｔ的比浓粘度ηｓｐ、浓度Ｃ的数学关系，计算值与实验值有较好的一致性     

铋钙铟钒石榴石单晶磁晶各向异性的研究

通过对｛Ｂｉ０．４Ｃａ０．６｝［Ｆｅ２－ｙＩｎｙ］（Ｆｅ１．７Ｖ１．３）Ｏ１２（ｕ＜０．３）的室温穆斯堡尔谱分析确定非磁性离子Ｉｎ３＋进入八面体（ａ）晶位置换部分Ｆｅ３＋．按单离子模型对ＢｉＣａｌｎＶＩＧ单晶温磁晶各向异性常数与掺铟量的关系进行叠代得出Ｆｅ３＋离子在单晶ＢｉＣａＶＩＧ和ＢｉＣａＩｎＶＩＧ四面体和八面体晶位上对磁晶各向异性有大体相同的贡献．     

聚硅硫酸铁混凝性能的试验研究

采用复合共聚生产工艺,以Ｆｅ２（ＳＯ４）３、Ｈ２ＳＯ４和Ｎａ２ＳｉＯ３为原料,制备聚合硅酸硫酸铁（ＰＦＳＳ）混凝剂。采用正交试验方法,研究了Ｆｅ＾３＋／ＳｉＯ２摩尔比、ｐＨ、加药量对混凝效果的影响,与聚合氯化铝（ＰＡＣ）对比试验结果表明：ＰＦＳＳ和ＰＡＣ具有更好的去浊的效果。     

玻璃结构中P5+离子配位状态的研究

利用红外光谱和喇曼光谱研究了P5 离子在PbO-Bi2O3-P2O5玻璃结构中的配住状态。结果表明：当P2O5的引入量小于31mol％时,获得玻璃的结构中含不带P=O双键的单个[PO4]四面体,这些四面体之间通过四个顶角氧而与Pb2 ,Bi3 离子联接;而当P2O5的引入量高于50mol％时,获得玻璃的结构中含带P=O双键的[PO4]四面体,这些[PO4]四面体通过公共氧（桥氧）而形成[PO4]四面体的链式结构,链式结构之间由Pb2 或Pb2 和Bi3 离子联接。     

锅炉受热面联络管内壁氧化皮层缺陷分析

针对开封火电厂2×600MW机组扩建工程中锅炉受热面联络管内表面上存在氧化层的问题,分析高温下钢铁表面氧化层组织结构,比较3种铁氧化物的PBR比及膨胀系数,得到氧化层容易剥离的原因;并确认硫酸酸洗法可以有效去除受热面联络管内表面上氧化层．     

Structure and Coordination Investigation of Iron-ion Tinting Principle in Ferreous Glass

The tinting phenomena of iron oxide contained glasses were studied from aspects of the electronic configuration, the iron ions coordination fields and the ions structure in glass. Several iron ion tinting forms at different redox or COD ( chemical oxygen detand ) conditions and their influential factors were given necessary explanations. The resalts reveal that the Fe^3 -O-Fe^2 structure is the real tinting reason of iron involved glasses,whereas the Si^4 -O-Fe^3 and Si^4 -O-Fe^2 formalxaions modify the glass colours. Under oxidizing melting condition, the amount of 4/6-coordinated Fe^3 inereases and makes the glass colour yellowish. Conversely, reducing melting condition makes the 6-coordinated Fe^2 increased and gives much blue tint to the glass. The conventional tank furnace tuelting the very strong reducing condition, which is of high COD glass batch, is not suitable. The high ratio of ferroas/ ferric in glass can be obtained with a new refining technology which contains no or little amount of refining agent.     

B_2O_3对磷酸盐生物玻璃水解性的影响

采用化学分析、热膨胀测试及红外光谱分析．研究了适量引入B2O3对磷酸盐玻璃水解性的影响．并从组成-结构-性质的关系上进行了分析．结果表明,B2O3的适量引入．使玻璃水解率和热膨胀系数都出现反常现象．B2O3主要以[BO4]四面体进入以[PO4]四面体为主体的偏磷酸盐玻璃网络结构中,使玻璃既具有一定的生物活性,又具有一定的化学稳定性。     

Li_2O-P_2O_5-V_2O_5系统玻璃“晶化前期”电导研究及ESR对钒离子价态分析

本文确定了Li_2O-P_2O_5-V_2O_5系统玻璃的形成范围。采用交流电桥法测定了几组样品的电导率,lg(σT)～1/T曲线表明是由两个直线段构成,电导率在转变温以后的“晶化前期”异常增加,分析认为由于玻璃结构有序化程度增加所致。利用ESR实验对玻璃中钒离子价态进行了分析,表明该系统玻璃仅以V~(4+)和V~(5+)钒离子状态存在。随Li_2O含量增加,V~(5+)离子浓度增加,试样电子电导下降。文中从结构角度对玻璃性能进行了讨论。     

Interface chemical states of NiO/NiFe films and their effects on magnetic properties

Ta/NiOx/Ni81Fe19/Ta multilayers were prepared by rf reactive and dc magnetron sputtering. The exchange coupling field ( Hex) and the coercivity ( Hc) of NiOx/Ni81Fe19 as a function of the ratio of Ar to O2 during the deposition process were studied. The composition and chemical states at the interface region of NiOx/NiFe were also investigated using the X-ray photoelectron spectroscopy (XPS) and peak decomposition technique. The results show that the ratio of Ar to O2 has great effect on the nickel chemical states in NiOx film. When the ratio of Ar to O2 is equal to 7 and the argon sputtering pressure is 0.57 Pa, the x value is approximately 1 and the valence of nickel is + 2. At this point, NiOx is antiferromagnetic NiO and the corresponding Hex is the largest. As the ratio of Ar/O2 deviates from 7, the exchange coupling field ( Hex) will decrease due to the presence of magnetic impurities such as Ni +3 or metallic Ni at the interface region of NiOx/NiFe, while the coercivity ( Hc) will increase due to     

Preparation of LiFePO4 for lithium ion battery using Fe2P2O7 as precursor

In order to obtain a new precursor for LiFePO4, Fe2P2O7 with high purity was prepared through solid phase reaction at 650 ℃ using starting materials of FeC2O4 and NH4H2PO4 in an argon atmosphere. Using the as-prepared Fe2P2O7, Li2CO3 and glucose as raw materials, pure LiFePO4 and LiFePO4/C composite materials were respectively synthesized by solid state reaction at 700 ℃ in an argon atmosphere. X-ray diffractometry and scanning electron microscopy(SEM) were employed to characterize the as-prepared Fe2P2O7, LiFePO4 and LiFePO4/C. The as-prepared Fe2P2O7 crystallizes in the c1 space group and belongs to β-Fe2P2O7 for crystal phase. The particle size distribution of Fe2P2O7 observed by SEM is 0.4-3.0μm. During the Li ion chemical intercalation, radical P2O4-O7 is disrupted into two PO3-4 ions in the presence of O2-, thus providing a feasible technique to dispose this poor dissolvable pyrophosphate. LiFePO4/C composite exhibits initial charge and discharge capacities of 154 and 132 mA·h/g, respectively.     

Optical Characteristics of Porous Glasses Matrix and Its Light-conducted Mechanism

The optical properties of matrix of porous glasses and phase separated glasses were investigated by visible spectroscopy and infrared spectroscopy.The experimental results show that.both the porous glasses and phase-separated glasses hare very good light transmission in visible ligth region that wavelenth is longer than 560nm.The micropores of porous glasses and the boron-rich phase of phase-separated glasses have strong Rayleigh scatter effects on the visible light.the largest scatter occurrs at 360-370nm;the thicker the glasses.the larger the light scattering.Thus .the pore size disribution and thed size of heterogeneous micro zone in boron-rich phase of phase-separated glasses can be measured .After coupled into porours glasses.the most intense absorption of hydrated ious of [Co(H2O) 6]^2 shifts from 508 nm to 515nm.The production of the most intense absorption and the red shift were owde to Jahn-Teller of octahedral field formed by six H2O moleculur and perturbation effect resulted by microporous of porous glasses for its physics-chemical cirumstance.As a result.the porous glasses are perfect optical function materials in risible region.ichich can be assembled by chenvical method.     

一个新型氰根桥联铁(Ⅲ)一铜(Ⅱ)大环配位聚合物的合成和晶体结构

合成了新型大环配位聚合物[Cu(L)]2[Fe2(H2O)(CN)10]·8H2O(L=1,8-二正丙基-1,3,6,8,10,13-六氮杂-14-冠-4),用元素分析、ICP分析、IR光谱对配合物进行了表征,X-射线衍射测定了其单晶结构．结果表明,该晶体属正交晶系,Pddd空间群,a=1．8310(4)nm,b=2．6060(5)nm,c=3．1680(6)nm,α=β=γ=90°,V=15.116(5)nm3,Z=8,dc=1．085 g/cm3,F(000)=5200,R1=0．1024,WR2=0．2657,GOF(F2)=0．992．该配合物结构中氰根桥联铁(Ⅲ)和铜(Ⅱ),形成Fe-CN-Cu-NC-Fe－维链,链与链之间经由Fe-O(H2O)-Fe而相互联结,形成相互交叉的网状结构．铁和铜均形成6配位畸变8面体构型．     

Research on Kaolinite in Coal Measures of West Beijing by Mossbauer Spectroscopy

The spatial occurrence of iron in kaolinite of coal measures west of Beijing was studied by using the Mossbauer spectroscopy technique and a step-by-step method of fitting. The results show that there are three kinds of spatial occurrence in kaolinites： tetra-coordination Fe（3＋） in Si-O tetrahedrons, sexa-coordination Fe（3＋） in A1--O octahedrons and sexa-coordination Fe（2＋） in A1-O octahedrons, respectively occupying 51.72 %, 37.25 % and 11.03 %, Neither foreign matter of magnetic Fe mineral nor superparamagnetic goethite exists in kaolin concentrates. Fe in kaolin concentrates cannot be removed by conventional methods, which is significant for both theoretical research on kaolinite minerology and practical use of the kaolinites of coal measures west of Beijing.The research also illustrates that the Mossbauer spectroscopy is an effective method in studying the micro-superfine Fe in kaolin.