臭氧-生物活性炭技术

介绍了臭氧-生物活性炭技术工作原理及其在国内外的发展现状,提出了该项技术在应用中的局限性,并提出了此项技术的一些改进方法。     

腐殖酸与多环芳烃结合强度的相关因素研究

研究了具有不同结构特征的腐殖酸与多环芳烃蒽的结合强度与腐殖酸分子中的核心官能团含量及酸度变化的关系。结果表明,腐殖酸溶液与蒽的结合常数KOC与UV254/TOC的变化呈现出很好的相关性;各腐殖酸溶液与多环芳烃蒽的结合常数KOC随酸度的增强而增强。说明腐殖酸与多环芳烃之间作用的核心可能在腐殖酸类物质的苯环上,腐殖酸的酸性基团参与了腐殖酸与多环芳烃之间的作用。     

基于PXI-4220和LabVIEW的测力传感器数据采集系统设计

针对现在工业现场设备中,需要测试动态力值的情况,文章提出一种基于NI PXI-4220和LabVIEW的测力传感器数据采集系统。该系统采用PXI总线技术,通过NI PXI-4220采集动态力值信号,并用LabVIEW编程进行数据处理。该系统运行准确可靠,具有很好的可扩展性。     

Synthesis, Crystal Structure of [ （MeC5H4）2Ln（μ-OCH2 CH2NMe2 ） ]2 （Ln = Sm, Y, Nd） and Their Catalytic Activity for Ring-Opening Polymerization of ε-Caprolactone

Reaction of (MeC5H4)3Ln with HOCH2CH2NMe2 in tetrahydrofuran (THF) gives the new complexes [ (MeC5H4)2Ln(μ-OCH2CH2NMe2)]2(Ln = Sm, Y, Nd) with nitrogen functionalized μ-alkoxide ligand. The complexes were characterized by elemental analysis and IR, and [ (MeC5H4)2Sm(μ-OCH2CH2NMe2)]2 was structurally characterized by the X-ray diffraction to be a dimer formed by two unsymmetric oxygen bridges. The complex has a tricyclic skeleton with the additional two Sm- N bonds via intmmoleeular coordination of OCH2CH2NMe2. The coordination number of the central metal Sm is nine. The tide complexes show good catalytic activity for ring-opening polymerization of ε-capmlactone.     

Synthesis, Characterization and Crystal Structure of Neutral Homoleptic Lanthanide Amide Yb（NPh2）3（THF）2

A neutral homoleptic lanthanide amide Yb(NPh2)3(THF)2 was obtained by reaction of anhydrous YbCl3 with LiNPh2 in THF. The product was characterized by elemental analysis, infrared spectrum and X-ray crystallographic analysis. The crystal data are monoclinic, P21/n space group, a=1.2052(2) nm, b=1.9369(3) nm, c=1.6523(2) nm, β=92.79(1)°, V=3.8524(9) nm3, Z=4, Dc=1.417 g*cm-3, μ=24.67 cm-1 (Mo Kα), F(000)=1668, R=0.036, Rw=0.039. The central metal ytterbium is coordinated by three terminal NPh2 groups and two THF molecules to form a five-coordinate distorted trigonal bipyramid. The mean Yb-N bond length is 0.2219(6) nm.     

Reaction of Bis （Methylcyclopentadienyl） Lanthanide Amido Complex with n-Hexyl isocyanate-Synthesis and Characterization of {（MeC5H4 ）2 Yb[ OC（NPh2 ）N（n-hexyl） ]}2

In recent years,the synthesis of polyisocyanatesand their chemical structures have received consider-able attention,because polyisocyanates have somespecial properties,such as chiral spiral structure[1]and liquid crystal[2]etc.We previously reported thatcyclopentadienyl lanthanide amido complexes[3]anddivalent lanthanide complexes[4]both can catalyze theoligomerization or polymerization of phenyl isocyanate.Furthermore,the active intermediates of these reac-tions were obtained by the stoichiom…     

Catalytic Action of Ln（η^6-C6H6） （AlCl4）3 in Alkylation of Benzene

The alkylation of benzene with 1-hexene which gives 1-phenylhexane and 2-phenylhexane were achievedunder mild conditions by use of neutral π-arene complex of lanthanide Ln(η6-C6H6) (AlC14)3. The effect of Ln( η6-C6H6)(A1C14)3 and reaction conditions on the alkylation reaction were studied.     

MS6001FA燃气轮机DLN2.6+燃烧系统分析

简要介绍了MS6001FA型燃气轮机的结构，DLN燃烧技术的由来及优、缺点，DLN2.6+燃烧室的结构、特点和燃烧过程。     

带电水蒸气冲洗35kV绝缘子串闪络电压的研究

绝缘子污秽清扫对保持电力设备外绝缘水平意义重大。针对现有污秽清扫方式的不足和节约用水的要求,笔者提出了带电水蒸气清洗绝缘子串污秽,对带电水蒸气清洗绝缘子串的部分系统安全问题进行了研究。通过测量35kV染污绝缘子串在高压水蒸气冲洗下和高温水蒸气、常温水雾环境中的闪络电压,分别模拟水蒸气柱无散花清洗绝缘子和水蒸气柱由于散花引起绝缘子污秽湿润对绝缘子串闪络电压的影响;绘制了3种试验情况下绝缘子串平均闪络电压随盐密(ESDD)的变化曲线。结果表明,即使在重污秽情况下,高压水蒸气冲洗绝缘子串的平均闪络电压高于35kV系统最高运行相电压,无过电压出现时可保证带电清洗的系统不闪络;水蒸气柱散花会降低绝缘子串闪络电压,现场带电清扫中应用适当喷头、调节清洗距离尽量减小水蒸气柱散花。