交联萘沥青的组成与结构特征

萘与硫在较低温度下交联聚合，制得了可溶性好、残炭值高、软化点较低，流动性良好的交联萘沥青。结构分析发现，此沥青分子量分布较窄，主要由三到四个萘分子交联而成，推测其反应机理，估计聚合物经萘环侧位交联成环而形成长链状硫杂环类结构。     

Electrochemical properties of niosomes‐modified Au electrode and its interaction with 1‐anilino‐8‐naphthalene‐sulfonate

The gold electrode was modified by noisomes, prepared by sonicating the mixed solution of PEG 6000/Tween 80/Span 80/H₂O. Electrochemical cyclic voltammetry (CV) and impedance spectroscopy (EIS) were performed for characterizing the modification. The construction of multilayer films of octadecanethiol (ODT)‐niosomes had almost no pinholes, which elicited that niosomes‐coated electrode through ODT assembly was more effective immobilization compared to direct modification method. A large semicircle formation in the entire range of frequency indicated the complete electron‐transfer control for the redox reaction, implying a perfect blocking behavior. The Nyquist plot was consisting of two depressed semicircles after storage for 36 h in air, which implied a progressive and uniform construction manner, as expected for porous coatings. The modified electrode was used to investigate the interaction between 1‐anilino‐8‐naphthalene‐sulfonate (ANS) and noisomes. It was found that the low‐frequency semicircular arcs increase in diameter, indicating that the increase in the resistance R_p attributed mainly to the niosomes/solution interface. It was due to the binding of ANS to the niosomes‐modified electrode surface, exhibited against diffusing species through the pores. Copyright © 2009 John Wiley & Sons, Ltd.     

Large Eddy Simulation and Thermodynamic Design of the Organic Rankine Cycle Based on Butane Working Fluid and the High-Boiling-Point Phenyl Naphthalene Liquid Heating System

Large Eddy Simulation (LES) and Thermodynamic study have been performed on Organic Rankine Cycle (ORC) components (boiler, evaporator, turbine, pump, and condenser). The petroleum Coke burner provided the heat flux needed for the butane evaporator. High boiling point fluid (called phenyl-naphthalene) has been applied in the ORC. The high boiling liquid is safer (steam explosion hazard may be prevented) for heating the butane stream. It has best exergy efficiency. It is non-corrosive, highly stable, and flammable. Fire Dynamics Simulator software (FDS) has been applied in order to simulate the pet-coke combustion and calculate the Heat Release Rate (HRR). The maximal temperature of the 2-Phenylnaphthalene flowing in the boiler is much less than its boiling temperature (600 K). Enthalpy, entropy and specific volume required for evaluating the heat rates and the power have been computed by employing the THERMOPTIM thermodynamic code. The proposed design ORC is safer. This is because the flammable butane is separated from the flame produced in the petroleum coke burner. The proposed ORC obeys the two fundamental laws of thermodynamics. The calculated net power is 3260 kW. It is in good agreement with net power is reported in the literature. The thermal efficiency of the ORC is 18.0%.     

微波萃取/GC-MS法对电子电气产品中多氯萘的测定

建立了微波萃取/GC-MS法检测电子电气产品中多氯萘的方法。将破碎后的样品以甲苯为溶剂进行微波萃取,萃取液经硅胶小柱净化、平行蒸发定量浓缩后采用气相色谱-质谱法测定多氯萘的含量,外标法定量。优化了样品前处理条件,包括前处理方式、微波萃取溶剂、萃取时间,以及净化小柱的选择。对于8种含不同氯原子数的多氯萘,在1~50 mg/L范围内,线性关系良好,相关系数均大于0.995;方法定量下限为0.2~1.0 mg/kg,相对标准偏差为2.7%~7.2%,回收率为77%~112%。该法操作简便、分析迅速、结果准确,可以满足对电子电气产品中多氯萘的定性确证和定量分析。     

peri-naphthylenediamines

o-Nitro ando,o′-dinitro derivatives of 1,8-bis(dimethylamino)naphthalene and its acenaphthene analog were prepared for the first time by direct nitration with nitrogen dioxide or tetranitromethane. When 5,6-bis(dimethylamino)acenaphthene was treated with nitric acid in AcOH or MeCN or with nitronium tetrafluoroborate in MeCN, nitration was accompanied by partial demethylation of one of the NMe₂ groups. For Part 27, see Ref. 1. Published inIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1215–1220, July, 2000.     

微晶萘固相反射散射分光光度法测定钼的研究

研究了微晶萘萃取钼与吡咯烷基二硫代甲酸铵配合物的条件,并设计了固相反射散射分光光度法直接测定萘相中钼的含量。方法有较好的选择性,可以在钨存在下直接测定地质样品中钼的含量,方法检出限为０．０２３μｇ／ｍｌ相对标准偏差为４．２％。     

5-溴-6-甲氧基-2-丙酰基萘的钯催化氢化脱溴

溴甲氧基丙酰基萘;5-溴-6-甲氧基-2-丙酰基萘的钯催化氢化脱溴     

Crystallographic report: [Diaqua bis(2,2′‐bipyridine)(µ‐naphthalene‐1,4,5,8‐tetracarboxylato)]dizinc(II) tetrahydrate

The title complex features a two‐dimensional polymeric structure owing to the presence of µ₄‐bridging naphthalene‐1,4,5,8‐tetracarboxylate ligands. The trigonal bipyramidal coordination geometry for zinc is completed by a chelating 2,2′‐bipyridine and a water molecule. Copyright © 2004 John Wiley & Sons, Ltd.