聚苯胺在电化学电容器中的应用

采用化学氧化聚和法制备了聚苯胺电极材料,所制备的聚苯胺具有高于420F/g的法拉第赝电容和良好的电化学特性.分别采用聚苯胺作为正极材料,高比容量活性碳作为负极,38%硫酸作为电解液制备了复合型电化学电容器.复合型电容器工作电压达到1.4V,最大电容器比容量达到57F/g,最大比能量达到15.5Wh/kg.电容器200mA/cm2放电条件下真实功率达到2.8W/g,峰值比功率达到20.4W/g.循环工作寿命超过1000次.     

Secondary Activation of Commercial Activated Carbon and its Application in Electric Double Layer Capacitor

The cheap commercial activated carbon (AC) was improved through the secondary activation under steam in the presence of FeCl2 catalyst in the temperature range of 800-950℃ and its application in electric double layer capacitors(EDLCs) with organic electrolyte was studied. The re-acivation of AC results in the increases in both specific capacitance and high rate capability of DELCs. For AC treated under optimized conditions, its discharge specific capacitance increases up to 55.65F/g, an increase of about 33% as compared to the original AC, and the high rate capability was increased significantly.The good performances of EDLC with improved AC were correlated to the increasing mesoporous ratio.     

常压下Pt-Bi双金属催化剂上甘油选择性氧化(英文)

制备了一系列活性碳(AC)负载的Pt-Bi双金属催化剂,考察了催化剂中Bi含量对其催化甘油选择性氧化反应性能的影响.结果表明,适量Bi的添加可以改善催化剂中Pt的氧化还原性能,从而有利于催化剂活性的提高和二羟基丙酮(DIHA)产物的生成.当Bi的含量为5%时,该催化剂的活性最高,甘油转化率和DIHA选择性分别达到91.5%和49.0%.表征结果显示,Pt-Bi颗粒的平均粒径为3.8nm,且高度分散在催化剂表面,这是该催化剂具有较高活性的主要原因.     

介孔碳负载的Pd催化剂催化β-谷甾醇加氢制备β-谷甾烷醇

采用液相还原法制备了介孔碳(CMC)担载的Pd催化剂,用于β-谷甾醇加氢制备β-谷甾烷醇反应.与活性碳担载的Pd催化剂相比,Pd/CMC的活性更高,这归因于该催化剂具有较大的孔径,从而有利于较大分子的催化加氢反应.     

自来水直饮装置的设计与实现

经水厂一次处理后的自来水虽达到生活用水要求,但因自来水经管道传输、楼顶水箱供水或高层住宅泵供水的二次污染,用户实际是不能直接饮用的。为此,而设计一种装置,使得经过该装置流出的自来水可直接饮用。     

汽车排放污染及其电控简析

介绍汽车排放污染及电控汽车的三种排放控制方式，着重阐述了它们控制和减少排放污染的工作原理，以及它们的组成。     

Ti（SO4）2／C催化合成邻苯二甲酸二异戊酯（DIAP）

研究了Ti(SO4)2/C在邻苯二甲酸和异戊醇酯化中的催经性能，结果表明，Ti（SO4)2/C该反应中具有较高的催化活性，并得到了合成邻苯二甲酸二异戊酯的新工艺条件是：催化剂用量（邻苯二甲酸酐质量分数）为5％；异戊醇0．5mol，邻苯二甲酸酐0．2mol，反应温度185℃，反应时间180min，在此条件下收率可达95％。     

Treatment of Organic Compounds in Reclaimed Wastewater for Groundwater Recharge

To study water quality problems associated with groundwater recharge, a tertiary treatment process, consisting of coagulation, sand filtration, and granular activated carbon (GAC) adsorption, was used in combination with a simulated soil aquifer treatment. The process significantly improved secondary effluent quality. GAC adsorption reduced organic substances expressed by UV-254, dissolved organic carbon as well as partially adsorbable organic halogens. The results of the Ames test show that the secondary effluent contains a high concentration of mutagens. GAC filtration removed adsorbable organic bromine slightly whereas GAC adsorption removed mutagens effectively. The simulated soil aquifer treatment was able to further reduce UV-254, dissolved organic carbon, and adsorbable organic halogens through biodegradation. Adsorbable organic bromine levels were also reduced by the soil aquifer treatment process. The given reclamation technology used for groundwater recharge is of benefit to the removal of dissolved organic carbon, UV-254, adsorbable organic halogens, and rnutagenicity.     

室内空气质量检测方法与注意事项

随着人民生活质量的不断提高,居住环境的不断改善,近些年由于室内环境污染造成的一些疾病也不断发生,其中最主要、最常见、危害最大的五种污染物是放射性氡、游离甲醛、氨、苯和总挥发性有机化合物TVOC。为控制污染,本文论述了如何应用国家规定的室内空气质量检测方法以及使用该方法时应注意的事项。