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结晶水
    Determination of crystal water in uranium tetrafluoride
    四氟化铀结晶水的测定
    Through infrared analyzes determines agglutinates the temperature, the allocated proportion is 5 : 1 , the elevation of temperature the spectrogram basic other impurity peaks which to 500 ℃ nano-sized SnO_2 powder, the crystal water has been basic except that, explains agglutinates completely.
    通过红外分析来确定烧结温度,配比为5:1、升温至500℃纳米SnO_2粉体所得到的谱图基本没有其它杂质峰,结晶水被基本除去,说明烧结完全。
    IR peaks appeared at 3426.1 cm-1 and 1635.7 cm-1 and a widen weightlessness peak also appeared at its differential coefficient curve, what said there was crystal water among lattices.
    样品在3426.1和1635.7 cm-1处各出现了一宽的IR吸收峰,说明有结晶水存在。
    In crystal, the isopoly decavanadate anions, cations and the crystal water are linked together by ionic forces and hydrogen bonding and the chemical content within a unit cell has been identified as4[V10O28]6- · 12[H3+NCH2CH2N+H3] · 24H2O.
    十钒酸根、乙二胺与结晶水之间则通过离子间作用力及氢键相联系。 晶胞中所包含化学内容的确切成分为 4[V_(10)O_(28)]~(6-)·12[H_3~+NCH_2CH_2N~+H_3]·24H_2O
    Kinetics date of dehydrated crystal water stage is:n=0.2,E_a=102.2kJ·mol~(-1),A=1.7×10~7S~(-1).
    脱结晶水阶段的动力学参数为n=0.2,E_a=102.2 kJ·mol~(-1),A=1.7×10~7S~(-1);
    It is illustrated that the crystal water is dehydrated and anhydrous zirconium phosphate is formed at below 453℃. Anhydrous zirconium phosphate is decomposed into ZrP 2O 7 completely at 720℃.
    脱去结晶水后形成的Zr(HPO4)2在453℃进行磷羟基缩合,至720℃完全分解为ZrP2O7。
    The result indicates that in the airflow of N 2, Fe(C 2O 4) 3·x H 2O loses crystal water at the temperature of 473K,and some of the Fe(C 2O 4) 3 is transformed into ferrous oxalate. Transformed ferrous oxalate begins to decompose at the temperature of 573K while ferric oxalate,at 533K. These products can be decomposed into ultrafine particles of Fe 3O 4.
    结果表明 ,Fe2 (C2 O4) 3·xH2 O在氮气流中 473K下失去结晶水的同时 ,将部分转变成草酸亚铁 ,生成的草酸亚铁只有在 573K以上才开始分解 ,草酸铁则在 533K时就开始分解 ,且分解产物为超细Fe3O4粒子。
    The product was analyzed by SDT 2960 TGA-TDA, it was testified that there are four crystal water in cupric methanesulfonate, i.e. (CH3SO3)2Cu·4H2O.
    合成的甲烷磺酸铜由SDT2960差热-热重联用分析仪来分析,证明其含4个结晶水,即(CH3SO3)2Cu·4H2O。
    The crystal water and Keggin-type structure of \[(n-C4H9)4N\]\[γ-SiW(10)O(36)\] played an important role for catalytic performance for butylene-1 epoxidation.
    [(n C4H9)4N][γ SiW10O36]中的结晶水及其Keggin型结构对催化性能具有重要影响。
    Results show that the compound belongs to monoclinic system, emits fluorescence, and loses its crystal water by three steps at 50 to 242 ℃.
    该化合物属单斜晶系,具有一定的荧光强度,在50 ̄242℃分3步失去结晶水
    Through optimizing the experiment conditions, qualitative and compositional analyzing for product, the results of experiment show that the number of crystal water is agree with the theory value, namely the molecular formula of the particle is FeC2O4· 2. 01H2O. The yield is 97% and the mass fraction of ferric ion in the sample is 0. 28% when the heating reaction time is 120 minutes.
    通过优化实验条件、定性产物及组成的测定,实验结果表明,加热反应时间为120 min时,合成样品的结晶水的个数与理论值非常接近,即合成样品为FeC2O4·2.01H2O,且产率为97%其中样品中Fe3+的质量分数为0.28%。
    Results showed that the two compounds have fluorescence and upconversion fluorescence, and their intensities increase with the ErCl3 ratio increasing in CdCl2. 9CdCl2·2ErCl3·29H2O loses its crystal water by three steps in the temperature range from 55 to 215 ℃, while CdCl2·7ErCl3·42H2O loses its crystal water by one step in the temperature range from 65 to 188 ℃.
    结果表明,两个新物相化合物均具有荧光和上转换发光性能; 化合物9CdCl2·2ErCl3·29H2O通过3步失去其结晶水,CdCl2·7ErCl·342H2O则1步失去其结晶水.
    THE EFFECT OF CRYSTAL WATER ON THE MOLAR MAGNETIC SUSCEPTIBILITY OF CUPRIC SULFATE
    结晶水对硫酸铜的摩尔磁化率的影响
    Determination of the Number of Crystal Water by NMR Method
    用~1H-核磁共振法测定一种复合物中结晶水数目
    A Study on Determining Content Crystal Water of CuSO4 with Microwave Drying
    微波加热干燥法用于硫酸铜中结晶水的测定
    RAPID DETERMINATION OF CRYSTAL WATER IN BARIUM CHLORIDE UNDER MICROWAVE LRRADIATION CONDITIONS
    微波化学实验Ⅰ.氯化钡中结晶水的测定
    The composition andcharacter of the Precipitates, including molal ratio of Mo and Zr, crystal water,crytal structure, Spectrum character and so on were also investigated, and theformula was declared;
    同时也研究了沉淀的组成和特征,包括铂锆摩尔比、结晶水、晶体结构、光谱特征,进而确定了沉淀的分子式;
    Our group has synthesized systematically this kind of complexes and their derivatives, interestingly, crystal water can often be found existing in Zn, Cd complexes.
    我们研究组已系统合成出该类金属有机配合物及衍生物,有趣的是,以Zn、Cd为中心金属的配合物中常有结晶水存在。
    Whether or not free nitrate ion exists in complexes’ external layer may be judged by molar conductance analysis. Whether or not crystal water and coordinated water exist may be judgedby conductance analysis.
    通过摩尔电导分析可判断配合物外界是否有自由的硝酸根离子存在,结合差热-热重分析可判断结晶水或配位水的存在。
    The synthesized borates contain more crystal water molecules at low temperature, and contain less crystal water molecules at high temperature.
    当合成温度较低时,产物中含结晶水比例较大; 而合成温度较高时,产物中含结晶水的比例较小,甚至可以制得不含结晶水的硼酸钙化合物。
 

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