【摘 要】
：
A new reduced molybdenum(V) phosphate (H3dien)2(H2dien)2H[NaMo12O24(OH)6(HPO4)6 (PO4)2]·nH2O (n =10.93, dien =diethylenetriamine) has been synthesized under hydrothermal conditions and characterized b
论文部分内容阅读
A new reduced molybdenum(V) phosphate (H3dien)2(H2dien)2H[NaMo12O24(OH)6(HPO4)6 (PO4)2]·nH2O (n =10.93, dien =diethylenetriamine) has been synthesized under hydrothermal conditions and characterized by elemental analyses, IR and X-ray diffraction.C16H96.86Mo12N12NaO72.93P8 (Mr =3046.73) crystallizes in the monoclinic system, space group P21/c with a =13.3575(18), b =21.907(3), c =15.654(2) (A), β=110.22(2)°, V=4298.4(10) (A)3, Dc=2.354 g/cm3, Z =2, μ(Mo Kα) =1.966 mm-1, F(000) =2990.6, the final R =0.0356 and wR =0.1083 for 8739 observed reflections with Ⅰ > 2σ(Ⅰ).It consists of the sandwich-shaped cluster anions [Na{Mo6O12(OH)3(HPO4)3(PO4)}2] 11-held together into a three-dimensional supramolecular framework through intermolecular hydrogen-bonding contacts.A probe reaction of the oxidation of acetaldehyde with H2O2 showed that this compound has high catalytic activity in the reaction.
其他文献
本文根据工程实际设计经验与体会，结合国家规范要求，对超高层建筑给排水系统设计的一些特点展开探讨，从给水系统设计、排水系统设计、消防系统设计等方面论述了给排水管道设计过程中应注意的问题，以保证给排水管道的安全使用。
酸催化酯交换法工艺生产生物柴油可利用废油脂为原料而极大降低原料成本，但酸催化工艺防腐设备的购置和维护成本及废水处理费用较高，且高醇油比使甲醇大量循环能耗增加.本文仿真典型酸催化酯交换法工艺并进行技术经济学分析，以期实现过程系统综合.模拟结果表明主要过程数据符合实验结果，工艺流程设计合理.经济分析表明：年产8千吨生物柴油的酸催化甲醇法工艺，其直接固定成本约2078万元，其中主要设备购置成本约363万
The extraction behavior of metal ions (Hg2+ and Cd2+, M2+) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-imidazolium hexafluorophosphate ionic liquid ([Bmim]PF6) as ex
The extraction behavior of five rare earth ions (RE3+) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-irnidazolium hexafluorophosphate ([Brnim]PF6) ionic liquid as extr
对比4Ps和PDCA质量管理模式，根据4Ps的原理、方法与PDCA有机结合，综合应用于医院消毒供应中心的管理实践，并以"医疗包标签管理"为应用实例总结其管理特点和效果。
实验采用溶液缩聚法，由腰果酚、甲醛分别与乙二胺、二乙撑三胺、己二胺反应制备腰果酚缩醛胺(PCE、PCD、PCH)；三种缩聚物固化环氧树脂缩乙二醇(ERG)涂膜均具有优良的干燥成膜性、物理机械性能、抗化学溶剂性能和耐热性能。
The extraction equilibrium of four rare earth ions (REn+, n =3 or 4) was investigated in ionic liquid (IL) extraction system using 1-butyl-3-methyl-irnidazolium hexafluorophosphate ([Bmim]PF6) ionic l
Temperature dependent solid-liquid extraction (SLE) behavior of six rare earth elements (REs) was investigated using N-buty1 pyridinium hexafluorophosphate ([BPy]PF6) as an ionic liquid solvent and be
以热塑性聚氨酯(TPU)和聚氯乙烯(PVC)为主要原料,邻苯二甲酸二丁酯(DBP)、复合铅盐稳定剂、硬脂酸钙为助剂制备TPU/PVC热塑性弹性体,探讨共混比、DBP用量和填充剂用量对复合材料拉伸强度、断裂伸长率的影响,利用扫描电镜表征拉伸断面；结果表明,最佳实验配方为：TPU (S75) 80份、PVC 20份、纳米碳酸钙20份、DBP20份、复合铅盐稳定剂三盐3份、二盐3份、硬脂酸钙2份、钛酸酯
N-doped and oxygen-deficient TiO2 photocatalysts were fabricated by a two-step calcination method using dicyandiamide and commercial TiO2 as starting materials.Photocatalytic activity was tested by de