新型胺基修饰的超高交联聚合吸附剂吸附水中酚类化合物的研究

合成了新的胺基修饰的超高交联AH系列吸附树脂．以弱碱树脂D301和超高交联吸附树脂ND100为参照，测定了AH系列吸附树脂吸附水中苯酚、对氯苯酚、对甲苯酚、对硝基苯酚的吸附性能。结果表明：修饰的超高交联吸附树脂对苯酚．对甲苯酚、对氟苯酚的吸附量比ND100和D301更大，而D301树脂对对硝基苯酚有最大的吸附量．提出了AH系列树脂对4种酚类化合物吸附行为的作用机理．     

Efficient Esterification of Ferrocenecarboxylic Acid in Ionic Liquids

An efficient esterification of ferrocenecarboxylic acid with substituted phenols has been achieved using DCC / DMAP protocol in ionic liquids. The corresponding esters are produced in high yields.     

蛋白质离子交换平衡模型

本文综述了蛋白质的离子交换平衡模型的研究进展，包括Langmuir模型、质量作用模型以及建立在双电层理论基础上平行板模型和表面过剩模型，分析比较了各模型的特点和存在的问题，对今后的研究方向进行讨论。     

棒状薄层色谱/氢火焰检测法在石油重质油烃组成分析上的应用

在石油重质油的烃组成分析中,液固色谱,质谱和高效液相色谱等已被广泛采用。但是,这些方法均存在着一些缺点,如分析时间长、定量困难等。棒状薄层色谱/氢火焰检测(TLC/FID)法则较好地克服了上述缺点。本文扼要叙述了TLC/FID法的分析原理、试验技术和在石油重质油烃组成分析中的应用实例,并对该技术的发展前景提出了看法。     

Separation of Felted Explosives by Pressurized Microemulsion Electrokinetic Chromatography

A new MEEKC method assisted with pressure-driven mobile phase was presented for the separation of felted explosives. Microemulsion solution was composed of 80 mmol/L heptane-120 mmol/L SDS (sodium dodecyl sulphate)-900 mmol/L butanol-10 mmol/L borate at pH 9.4 and a pressure-driven flow of 0.020 mL/min under 1.3 MPa was employed to manipulate the separation. Explosives HMX (1,3,5,7-tetranitro-1,3,5,7-tetrazacyclooctane) and TATB(triamino-trinitrobenzene), which were felted on fluorine rubber F2311 (polytrifluorochlorethylene and polyvinylidene fluoride 1/1 co-polymerization) and F2314 (polytrifluorochlorethylene and polyvinylidene fluoride 4/1 co-polymerization) were well separated with very good peak shapes.     

2(3 H)呋喃酮向2(5 H)呋喃酮的转化研究

本文研究2(3H)呋喃酮的热转化和碱催化成2(5H)呋喃酮的过程。应用NMR跟踪技术测定了转化动力常数, 计算了活化能, 这对确定适宜的转化条件具有实际指导意义。还对碱催化下的转化机理进行了探讨。     

Enantiomeric Separation of Epinephrine and Salbutamol by Micellar Electrokinetic Chromatography Using β-Cyclodextrin as Chiral Additive

Enantiomeric separation of epinephrine and salbutamol was investigated by micellar electrokinetic chromatography employing β-cyclodextrin as chiral additive in ammonium chloride-ammonia solution. The analytes were detected by electrochemistry using gold microelectrode at 0.65 V versus SCE reference electrode. The effects of detection potential,concentration of β-cyclodextrin, concentration of sodium dodecyl sulfate, pH value of electrolyte and applied voltage were discussed.     

油脂氢化的动力学模型

给出了油脂氢化反应中活化态氢与甘三酯分子反应的动力学模型。H_2吸附在催化剂上形成活化态氢。它分别与甘三酯中的三烯酸(酯)、二烯酸(酯)、单烯酸(酯)发生反应。采取类似Ridel-Langmuir的方法, 导出了油酯氢化动力学方程式。对该公式进行了验证, 理论值与实验值相当一致。本文公式可概括半经验的Albright公式、Allen公式和Moharir公式。     

Reaction of 2,3-Dihydro-1,5-benzothiazepines and Phenylacetyl Chloride in the Presence of Triethylamine： A New Aspect on the Formation Mechanism of Dihydro-1,3-oxazin-4-one Derivatives

2a,4-Disubstituted 2,2a,3,4-tetrahydro-2-phenyl-1H-azeto[2,1-d][ 1,5]benzothiazepin-1-ones, as well as 2-substi-tuted 2,3-dihydro-3-phenylacetyl-2-styryl-benzothiazoles and 4a,6-disubstituted 3- .benzyl-4a,5-d/hydro-2-phenyl-1H,6H-[1,3]oxazino[2,3-d][1,5]benzothiazepin-1-ones, were obtained from the reaction of 2,4-disubstituted 2,3-dihydro-1,5-benzothiazepines with phenylacetyl chloride in the presence of triethylamine. The mechanism for the formation of 4a,5-dihydro-1H,6H-[1,3]oxazino[2,3-d][1,5]benzothiazepin-1-ones, 2,3-dihydro-1,3-oxazin-4-one derivatives, was suggested.     

Microwave-promoted Palladium Catalyzed Suzuki Cross-coupling Reaction in Water

Suzuki coupling is probably the most versatile approach among the cross-coupling reactions and the reaction has long been the subject of intensive work in the area of transition-metal chemistry1. In recent years, various modifications involving the catalyst, solvents, bases, reaction conditions and synthetic technique have been developed 2. The Suzuki cross-coupling reaction in water is more safe, economical. It is an environmentally friendly alternative in organic synthesis. The use of w…