Synthesis and Absorption Properties of New Na Specific Adsorbent Li（1＋x）AlxTi（2-x）（PO4）3

A new kind of adsorbent Li（1＋x）AlxTi（2-x）（PO4）3 was synthesized by solid state reaction method. The influence of the content of doping aluminum on the adsorbent Li（1＋x）AlxTi（2-x）（PO4）3 was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the adsorption properties showed that the adsorbent can selectively adsorb sodium with the adsorption capacity of 11.76 mg/g. The optimum conditions of adsorption are at pH 10.0-11.0 in LiCl solution.     

热塑性淀粉/蒙脱石复合材料性能研究

用柠檬酸活化蒙脱石(CMMT),用尿素和甲酰胺塑化热塑性淀粉(UFTPS),制备了热塑性淀粉/蒙脱石(UFTPS/CMMT)复合材料.广角X-ray衍射(WAXD)、透射电子显微镜(TEM)表明,UFTPS和CMMT形成复合材料.CMMT质量分数2%~10%时,将复合材料在相对湿度50%(RH=50%)的环境下保存10 d,力学测试得出,复合材料的最大拉伸应力达到24.86 MPa,应变为134.50%,杨氏模量和断裂活化能分别由UFTPS的87.25MPa,1.87 N.m上升到复合材料625.25 MPa,2.45 N.m;可以看出,和纯UFTPS相比,复合材料强度明显提高;流变行为研究得出,通过改变加工温度和螺杆挤出机速度可以调整复合材料的流变行为;与传统的甘油体系相比,复合材料很好的抑制了材料长时间放置的结晶行为;并且该材料比纯UFTPS具有很好的耐水性能和热稳定性.     

微波等离子体引发合成P(AMPS/NIPA)新型智能凝胶及其性能

以2-丙烯酰胺-2-甲基丙磺@（AMPS）和异丙基丙烯酰胺（NIPA）为单体,通过微波等离子体引发聚合制备了新型二元智能凝胶P（AMPS／NIPA）,并对其性能进行了研究。探讨了等离子体功率及处理时间对聚合反应的影响;研究了该凝胶的温度敏感性、吸水／失水动力学和pH敏感性及其影响因素;对凝胶的组成及三维交联网络结构进行了表征。结果表明,P（AMPS／NIPA）二元智能凝胶具有高的溶胀比、很好的温度敏感性和pH敏感性以及快的智能响应速率。     

[Cu(β-ala)(phen)(H2 O)]·NO3 ·H2O的合成与晶体结构

在pH为3的醇水混合溶剂中合成了β-丙氨酸、1,10-邻菲咯林、铜的三元配合物,测定了配合物的晶体结构.晶体属单斜晶系,Pī空间群,晶胞参数a=1.0045(2) nm, b=1.2132(2) nm, c=0.71682(14) nm, α= 93.88(3)°, β= 94.31(3)°, γ= 99.81(3)°, V=0.8555(3) nm3, Z=2, Dc=1.669 Mg·m-3, μ=1.326 mm-1, F(000)=442, R=0.0457, Rw=0.1179.配合物中铜离子的配位数为5,分子间通过氢键构成三维网状结构.     

Penta-Coordinate Phosphorus Intermediates Analysis on Phospho-related Proteins

In this paper, based on known crystal structures of square pyramid （SP） and trigonal bipyramid （TBP） penta coordinated phosphorus compounds containing amino acid side chains, such as amino, carboxyl, hydroxyl or thiol, a software for survey the P（5）-structure of phosphorylated proteins was derived. By this software, it was found that 382 of 398 phosphorus related kinases （96%） from current PDB could go through the penta-coordinated phosphorus transition state or intermediate.     

BaCe0.8Ho0.2O3-a陶瓷的性质与应用

Ceramic BaCe0.8Ho0.2O3-α with orthorhombic perovskite structure was prepared by conventional solid state reaction, and its conductivity and ionic transport number were measured by ac impedance spectroscopy and gas concentration cell methods in the temperature range of 600-1000 ℃ in wet hydrogen and wet air, respectively. Using the ceramics as solid electrolyte and porous platinum as electrodes, the hydrogen-air fuel cell was constructed, and the cell performance at temperature from 600-1000 ℃ was examined. The results indicate that the specimen was a pure protonic conductor with the protonic transport number of 1 at temperature from 600-900 ℃ in wet hydrogen, a mixed conductor of proton and electron with the protonic transport number of 0.99 at 1000 ℃. The electronic conduction could be neglected in this case, thus the total conductivity in wet hydrogen was approximately regarded as protonic conductivity. In wet air, the specimen was a mixed conductor of proton, oxide ion and electron hole. The protonic transport numbers were 0.01-0.09, and the oxide-ionic transport numbers were 0.27-0.32. The oxide ionic conductivity was increased with the increase of temperature, but the protonic conductivity displayed a maximum at 900 ℃, due to the combined increase in mobility and depletion of the carriers. The fuel cell could work stably. At 1000 ℃, the maximum short-circuit current density and power output density were 346 mA/cm^2 and 80 mW/cm^2, respectively.     

KN03／MCM-48催化酯交换法合成碳酸二丙酯

对KNO，／MCM-48用于丙醇和碳酸二甲酯进行酯交换合成碳酸二丙酯的催化性能进行了考察．用X射线衍射（XRD）、红外光谱（IR）和X射线荧光法研究了催化剂的结构特征和表面性质．XRD结果表明，随着K负载量的增加，载体特征峰强度逐渐减弱，但仍保留MCM-48的晶体结构．随着焙烧温度的升高，KNO3逐渐分解成K2O．分别考察了活性组分负载量、焙烧温度、焙烧时间和催化剂的用量以及反应时间对反应的影响．结果表明，KNO3／MCM-48催化剂对碳酸二丙酯的合成具有很高的催化活性．在反应温度363K，反应时间6h，催化剂用量5％，丙醇与碳酸二甲酯摩尔比为4的条件下，碳酸二甲酯的转化率可达99．9％，产物碳酸二丙酯选择性93．4％，产率93．3％．     

超分子模板法合成层状中孔结构氧化铝

利用烷基硫酸钠作为模板剂在室温下合成了层状中孔结构氧化铝,考察了表面活性剂碳链长度和表面活性剂混合比例对层状氧化铝中孔相结构参数的影响.当使用单一表面活性剂作为模板剂时,层状中孔结构氧化铝的层间距d及其层状结构的长程有序度随着表面活性剂碳链长度的增加而增加;若使用C₈H₁₇SO₄Na与C₁₄H₂₉SO₄Na混合表面活性剂作为混合模板剂,当C₁₄H₂₉SO₄Na摩尔分数x处在0～0.5时,层间距基本恒定,接近于具有二者平均碳链长度(n=11)的单一表面活性剂作为模板剂时的情形;当x>0.5时,层间距随x的增大而逐渐增大.通过提出的混合表面活性剂在无机层中的分子排列结构模型对该结果做了解释.     

一种光交联电光聚合物的合成及其外部电光测量

合成了一种新的带有光交联基团的电光聚合物,其高分子基体是双酚A环氧树脂,二阶非线性生色团对硝基苯胺和光交联基团肉桂酰氯都键接在高分子链上.将聚合物溶解后旋涂成膜,对薄膜进行电晕极化.极化的后阶段用紫外光照射,使聚合物体系交联成网络结构,形成生色团取向长时间稳定的聚合物电光薄膜.用这种聚合物电光薄膜构成外部电光调制系统,测量了共面波导上的电信号.     

多孔二氧化硅对聚环氧乙烷结晶行为的影响

高分子化合物由于具有很长的分子链,不易进行规整排列,结晶速度通常很慢,为提高结晶速度,有时需要加入成核剂．多孔二氧化硅（ＳｉＯ２）具有较大的比表面积,故吸附作用较强,有可能作为成核剂影响部分结晶高聚物的结晶过程．聚环氧乙烷（ＰＥＯ）为部分结晶高聚物,其结晶行为对杂质较为敏感．本文目的在于通过结晶动力学及结晶与熔融行为的研究,探索多孔二氧化硅对ＰＥＯ结晶行为的影响．１　实验部分　　聚环氧乙烷（ＰＥＯ,Ｍｗ＝１×１０５）．两种多孔二氧化硅（ＳｉＯ２）按文献［１］方法制备,平均粒度为０．３μｍ,平均孔…