《无机及分析化学》在多媒体教学的应用及思考

对多媒体技术在无机及分析化学教学的应用进行了，阐述和分析，指出使用多媒体教学应注意的问题。     

趋磁性细菌的培养及其在污水处理方面应用的研究

介绍了趋次性细菌的磁特性和生态分布,对趋磁性细菌培养方法的研究进行了练述,并根据文献资料对趋磁性细菌进行了驯化培养,最后对趋磁性细菌在处理含重金属离子有机废水方面的应用前景进行了展望.     

UHMWPE微粉辐照接枝MAH的研究

采用辐照方法在超高分子量聚乙烯（ＵＨＭＷＰＥ）微粉表面接枝马来酸酐（ＭＡＨ），用水在ＵＨＭＷＰＥ膜上的润湿角作为目标函数，依据试验优化设计和灰色系统控制理论，研究了辐照剂量、微粉的粒度和ＭＡＨ单体的浓度对润湿角的影响。研究结果表明：所考查的三因数对润湿角的影响程度是不同的，影响顺序为：辐照剂量＞ＵＨＭＷＰＥ微粉粒度＞ＭＡＨ浓度。从关联角度看，三因素对润湿角的关联度没有明显的差别，表明在ＵＨＭＷＰＥ微粉辐照接枝的反应过程中，所考查的三因素对接枝反应过程的影响是互相促进、互相影响、互相补充的。由于辐照剂量在ＵＨＭＷＰＥ的接枝反应中是比较重要的因素，因此在接枝反应中要严格控制其辐照剂量，其次注意微粉粒度，适当调整单体加入量。至于交互作用，尚需进一步进行研究探讨。     

Oxidative Dehydrogenation of Ethylbenzene with Carbon Dioxide over Metal-Doped Titanium Oxides

Various metal-doped (Fe, V, Zr, Mg) titanium oxides were prepared by an acid-catalyzed sol–gel method and their properties as catalysts were investigated for oxidative dehydrogenation of ethylbenzene in the presence of carbon dioxide. The characterization techniques, XRD, BET, TGA were employed to analyze the features of catalyst. Fe₃Ti catalyst was found to be quite effective among the catalysts tested at 823 K, 39.8% ethylbenzene conversion and 98% styrene selectivity were acquired.     

磁性生物吸附剂对Cu2+吸附性能的研究

以环氧氯丙烷为交联剂,用壳聚糖、纳米磁粉悬浮液(Fe3O4)和纯菌丝体制备了磁性生物吸附剂,用XRD对该吸附剂进行了结构表征.研究了溶液pH、吸附时间和Cu2 初始浓度对其吸附性能的影响,结果表明,在pH为5～5.5,Cu2 初始质量浓度为0.1 g/L,吸附时间为8 h的条件下,它的Cu2 去除率为88.73%,吸附容量为16.530 mg/g.该磁性生物吸附剂经5次重复使用后,对Cu2 去除率仍然达到79%以上,具有良好的重复使用性.     

Synthesis, characterization of bimetallic Sn-Zn-MCM41 and its catalytic performance in the hydroxylation of phenol

A series of Sn-Zn modified-MCM41 has been synthesized by direct hydrothermal method and characterized using ICP, XRD, TG/DTA, FT-IR, HRTEM and N_2-adsorption techniques. Catalytic performances of the obtained materials were evaluated in the hydroxylation of phenol with H₂O₂. Results indicated that all the samples exhibited typical hexagonal arrangement of mesoporous structure with high surface area and the heteroatoms were probably incorporated into the framework of MCM41. Catalytic tests revealed that the bimetallic incorporated materials were effective catalysts in the hydroxylation of phenol. The conversion of phenol could be reach to 56.8% for the catalysts with Sn: Zn: Si = 2.69: 4.57: 100 (molar ratio) under the optimized reaction conditions. Moreover, the materials containing Sn and Zn exhibited higher catalytic activity than monometallic Sn and Zn modified MCM41.     

基于FPGA的高速数据存储系统优化设计

针对遥测系统数据记录装置中数据传输速率与存储速率不匹配的问题,提出Flash的并行存储方案,采用交替双平面的编程方式可以使得存储器的存储速率达到单片Flash最高存储速率的2倍,即60 MB/s;对控制单元FPGA内部双端口RAM的逻辑设计进行改进,解决了数据存储异常的现象。在数据回收方面,提出了多备份的设计思想和备用读数接口的设计方案,已在工程应用中得到成功实践,验证了该数据记录装置的可靠性。     

机械化学制备陶瓷及复合材料粉体的研究进展

机械化学作为一种制备新材料的简单有效的方法,近年来得到了广泛的重视,取得了一些研究成果。本文介绍了机械化学作用的特点、机理和表征技术,主要对机械化学在功能陶瓷、生物陶瓷、结构陶瓷及复合材料粉体制备方面的最新研究成果进行综述和展望。     

疏水缔合类聚丙烯酰胺溶液性质研究

综述了疏水缔合类聚丙烯酰胺溶液性质的影响因素以及测定溶液微观形态的研究方法。     

Role of La2O3 in Pd-Supported Catalysts for Methanol Decomposition

Systems of Pd supported on various La₂O₃-modified -Al₂O₃ and CeO₂–Al₂O₃ catalysts were tested for catalytic methanol decomposition and characterized by means of XRD, BET, TPR, H₂-chemisorption and CO–FTIR. The addition of lanthanum significantly improved the selectivity of CO and H₂ for all the catalysts but showed a different influence on the catalytic activity in two systems. Methanol conversion decreased on La₂O₃-modified Pd/-Al₂O₃ catalysts, in line with the reduction of Pd dispersion, while the addition of La₂O₃ improved the dispersion of Pd and reinforced Pd–CeO₂ interaction for La₂O₃-modified Pd/CeO₂–Al₂O₃ catalysts, which resulted in a high production rate of CO and H₂. Thus, a synergistic effect between CeO₂ and La₂O₃ was observed on -Al₂O₃-supported Pd catalyst for methanol decomposition.