氧化羰基化一步合成碳酸二苯酯的研究进展

对氧化羰基化一步合成碳酸二苯酯过程所用的催化剂种类、反应机理及工艺开发进行了综述 ,并对其现状和存在的问题进行了讨论 ,强调固相催化将是氧化羰基化一步合成碳酸二苯酯的发展方向     

1,4-丁二醇在溶剂水、四氢呋喃中的γ∞测定

利用特制的双循环型汽液平衡釜代替一般的沸点计，对液相溶质的摩尔分数ｘ２和沸点差Δｔ进行了测定，并用回归法求得１，４－丁二醇在溶剂水、四氢呋喃中的无限稀释活度系数     

CJ18-200套管变形组合测量仪及其在临盘油田的应用

在油田的开发过程中，油水井套管的损坏日趋严重，直接影响了油田的正常生产。为解决这一问题，胜利油田临盘采油厂引进了CJ18—200套管变形组合测量仪，该仪器具有18个独立井径传感器，能提供环套管内壁18个方向上的井径变化，其成像功能能够提供套管的立体图、展开图和截面图，结合该仪器的井温、磁重量、磁井径等曲线能清晰准确判别套管的损坏类型和损坏程度。现场使用表明，该仪器对套管的孔眼、裂缝、错断变形反映准确，为进一步采取措施提供了可靠依据，取得了显著的应用效果。     

南盘江不会忘记你——记水利高级工程师、水电劳模杨祖诲

放在我们面前的,是高高的一摞水利规划报告书、统计表,以及各种规划、设计图纸.这些东西,每一页、每一字都凝聚着一位名叫杨祖诲的老水利专家的心血.眼下,这位头发花白但精神矍铄的老人正坐在我们面前.他的叙说,平静、淡泊——那是老成之后对过去人生的冷静思索.它为我们清晰地演绎出了南盘江的昨天、今天和明天,演绎出了滇东红土高原水利事业的历史、现实和未来……     

Synthesis,structural characterization and hydrogen storage of nickel-containing mesoporous MCM-48 by electroless plating

Hydrogen is a promising fuel for it is clean, highly abundant and non-toxic, but on-board storage of hydrogen is still a challenge. So it is imperative to have an efficient method of hydrogen storage. The mesoporous MCM-48 especially the nickel-containing MCM-48 has great potential in hydrogen storage. MCM- 48 was prepared by hydrothermal synthesis. Then electroless plating technology was used to deposit Ni on the surface of MCM-48 under ultrasonic environment. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and N₂ adsorption-desorption were employed to investigate the pore structure properties. The results showed that all the samples had Ia3d cubic structure and pore channels were highly ordered. Hydrogen adsorption studies showed that the MCM-48 after nickel plating adsorbed nearly twice the amount of hydrogen than pure MCM-48 at 2.0 MPa, 263 K. So we believe that a small amount of Ni can improve the capacity of hydrogen adsorption of MCM-48 efficiently.     

1,4—丁二醇在溶剂环己烷等物质中γ^∞的推算

采用简化斜率法对１,４丁二醇在环己烷等１４种溶剂中无限稀释活度系数（γ∞）进行了推算,经验证明除１,４丁二醇在芳香烃及乙醚中推算的γ∞有较大的误差之外,其余的推算结果比较满意。     

四氢呋喃等物质在1，4－丁二醇中γ~∞的测定

用色谱法对四氢呋喃等物质在溶剂１，４－丁二醇（ＢＤ）中的无限稀释活度系数进行了测定，采用同一柱温下固定液的流失量与实验测定的时间成正比的方法来推算固定液的流失，经过验证，此校正方法对本文测定是适用的     

非均相羰基氧化一步合成碳酸二苯酯的研究(Ⅴ)筛选催化剂及优化合成条件

Pd/LaxPbyMnOz, Pd/C, Pd/molecular sieve and Pd-heteropoly acid catalysts for direct synthesis of diphenyl carbonate (DPC) by heterogeneous catalytic reaction were compared and the results of DPC synthesis indicated that the catalyst Pd/LaxPbyMnOz had higher activity. The Pd/LaxPbyMnOz catalyst and the support was characterized by XRD, SEM and TEM, the main phase was Lao.szPbo.asMnOa and the average diameter could be about 25.4nm. The optimuna conditions for synthesis of DPC with Pd/LasPbyMnOz were determined by orthogonal experiments and the experimental results showed that reaction temperature was the first factor of effect on the selectivity and yield of DPC, and the concentration of O2 in gas phase also had significant effect on selectivity of DPC. The optimum reaction conditions were catalyst/phenol mass ratio l to 50, pressure 4.5MPa, volume concentration of O2 25%, reaction temperature 60℃ and reaction time 4 h. The maximum yield and average selectivity could reach 13% and 97% respectively in the     

新型高精度过滤材料的设计与开发

高温烟气过滤材料通过纺织材料的微孔结构对烟气中的粉尘进行拦截,从而达到过滤清洁的目的。传统针刺过滤材料受工艺设备的影响,滤料结构中孔径较大,对直径极其微小的粉尘颗粒过滤性差,从而影响滤料的过滤精度。采用全水刺加工工艺,结合超细纤维层结构,制备了全水刺超细纤维复合滤料。与传统针刺滤料、覆膜滤料以及超细纤维针刺滤料相比,全水刺超细纤维复合滤料具有更微小的孔径,且滤料结构中没有较大的穿透性针孔结构,产品可以有效拦截更微小的粉尘颗粒,过滤性能更好,同时测试压差与针刺滤料水平相当,性能更优良,适用于多种高精度过滤工况环境。