CC14法合成α—羟基—α—甲基苯丙酮的研究

α 羟基 α 甲基苯丙酮 (ＰＨＭＰ)是一种性能优良的新型光引发剂 ,具有引发效率高、热稳定性好、耐黄变、无异味等优点[1,2 ] 。现有合成方法步骤多 ,产率低 ,后处理麻烦 ,操作复杂[3,4] ,且在反应过程中会产生ＨＣ1或ＨＢｒ等有毒副产物。本文研究了在相转移催化剂的作用下[5,6 ] ,ＣＣｌ4直接氯化水解生成α 羟基 α 甲基苯丙酮的新方法。该方法不仅减少了反应步骤 ,简化了操作 ,而且提高了产品质量。1　实验部分1 .1　仪器与试剂傅立叶红外光谱仪Ｐｅｒｋｉｎ Ｅｌｍｅｒ 1 71 0 ,ＷＸＳ 1型阿贝折光仪。异丁酸 ,ＳＯＣｌ2 ,苯 ,四氯化…     

催化裂化汽油脱硫添加剂USY/ZnO/Al2O3的性能评价

 在固定流化床催化裂化装置上，以减压蜡油为原料，对制备的U\r\nSY／ZnO／Al2O3催化裂化汽油脱硫添加剂的性能进行了评价．结果表明\r\n，随着添加剂添加量和剂油比的增加，生成汽油的硫含量降低．在500\r\n℃和剂油比为5的条件下，在FCC平衡催化剂中添加30％的添加剂时，汽\r\n油的硫含量可由不加添加剂时的1230μg／g降低到770μg／g左右．添\r\n加剂的添加量（10％）较低时，对催化裂化产物的分布基本没有影响；\r\n添加30％的添加剂时，焦炭的产率有所增加，但汽油收率基本不变．X\r\nRD表征结果表明，USY／ZnO／Al2O3添加剂中的ZnO对USY的晶相结构有\r\n一定的破坏作用，但随着反应与再生次数的增多，ZnO与Al2O3之间形成\r\n较为稳定的锌铝尖晶石结构，使添加剂的性能趋于稳定．     

Decomposition of Transformer Oil Under Ultrasonic Irradiation During Degassing Process

In the degassing process of transformer oil with ultrasonic waves ,decompostition of the oil was observed.Light hydrocarbons,including methane,ethane,ethylene ,aceylene,propane etc,were found to be released continuously from the oil into headspace within a closed vial placed in an ultrasonic field ,The gases came from decomposition of hydrocarbon molecules under cavitation effect.     

Extraction of Americium(III) and Europium(III) with Two Open-Chain Crown Ethers of Amide Type

The extraction of Am³⁺ and Eu³⁺ from aqueous picric acid solution by N, N-dinaphthyl-N, N-diphenyl-3,6-dioxaoctanediamide (L^I) and 1, 1-(3, 6, 9-trioxaundecanedionyl)diphenothiazine (L^II) was investigated by a radioactive tracer technique. Extraction distribution ratios of Am³⁺ and Eu³⁺ have been measured as a function of pH, picric acid concentration, extractant concentration, diluent and temperature. The extraction of Am³⁺ is preferred to that of Eu³⁺ for both L^I and L^II, and the latter gives larger separation factor than the former. The equilibrium constants and thermodynamic parameters of extraction reactions were also calculated.     

Transient Spectroscopic Properties of [60] Fullerene—Containing Cyclic Sulphoxide

The properties of the triplet excited state of [60] fullerene-containing cyclic sulphoxide have been investigated by time-resolved absorption spectroscopy. Transient absorption bands of [60] fullerene-containing cyclic sulphoxide showed two decay-components, which wrer attributed to triplet excited states of different spin multiplicity. The properties of photoexcited states of [60] fullerene-containing cyclic sulphoxide are also reported.     

喹喔啉—2,3—二甲酰胺与3d过渡金属配合物的合成及性质研究

首次合成了喹喔啉－２，３－二甲酰胺（Ｑｘｄａ）与３ｄ过渡金属的三种固体配合物：Ｍ（Ｑｘｄａ）２ｃｌ２（Ｍ＝Ｃｏ（Ｉ），Ｎｉ（Ｉ），Ｃｕ（Ⅱ）。通过元素分析，摩尔电导，红外光谱，电子光谱，磁化率，热分析等手段对配合物的组成和性质进行了研究。     

新型氮杂2-β萘基苯并噁唑分子设计与光物理性质的研究

为了寻找新的有效光敏材料，设计了一系列新型氮杂2-β萘基苯并恶唑分子，用改进的PPP-SCF-CI方法，对设计分子的第一激发单线态，三线态，振子强度和跃迁矩等光物理性质进行了较为详细的研究，筛选出了一些新型的具有特殊光物理特性的分子，并预测了有可能产生新型氮杂2-β萘基苯并恶唑分子类光敏感功能材料的取代基部位。     

Photo-and Electro-luminescence of the New Ternary Europium(III) Complex

In recent years, the interest in developing luminescent lanthanide complexes has been greatly stimulated by their potential use in electroluminescent displays1. Europium complexes appear most attractive in view of the high photoluminescent efficiency and the high monochromatic red light that are widely exploited in full-color displays2. It has been approved that the second ligand plays an important role in europium complexes, the synergistic complexation of the second ligand can not only lead …     

5,7′-(亚甲胺基)-二-8-羟基喹啉的合成及其理论研究

以4-甲基苯磺酸作催化剂、用三乙胺调节pH值约为9的条件下, 由5-甲酰基-8-羟基喹啉和5-氨基-8-羟基喹啉合成了新的5,7′-(亚甲胺基)-二-8-羟基喹啉, 利用IR, UV, ¹H NMR, MS确认了分子结构, 比较研究了其光致发光特性, 运用Gaussian 98量子化学程序包, 采用B3LYP密度泛函(DFT)的方法, 在6-31G(d,p)水平上对分子的几何构型进行结构优化; 并对目标化合物的稳定结构通过计算预测其振动光谱, 计算结果与实验值基本相符.