纳米材料在润滑油中的分散性和稳定性

主要论述了目前解决纳米材料在润滑油中的分散性和稳定性的方法。     

工业表面活性剂在纳米材料／纳米结构材料制备中的应用及展望

阐述了纳米材料／纳米结构材料制备和应用的历史、现状及未来发展趋势。同时就工业表面活性剂在纳米材料／纳米的结构 材料制备中的应用进行了分类和总结,并就未来两种材料对工业表面活性剂的要求进行了展望。预测了未来一定时期内工业表面活性剂的生产方面和应用前景。     

Preparation of nanometer perovskite-type oxide La0.8Sr0.2MnO3 by organic solvent sol-gel method and capability testing

A perovskite-type oxide, La0.8Sr0.2MnO3, was synthesized by the organic solvent sol-gel method. The desired metal cations were chelated in a solution by using citric acid as the chelating agent and absolute ethanol as the solvent. The thermal decomposition of the metal carboxylate precursor gels was studied by thermogravimetric/differential thermal analyzer （TG/DTA） and the products derived from calcining the gels were characterized by X-ray diffraction （XRD） and transmission electronic microscope （TEM）. The polarization curves were acquired on an electrochemical workstation （LK98） and the discharge curves were acquired on a testing instrument of batteries （DC-5）, with a constant current discharge, less than 120 mA/cm^2. The results revealed that the nanometer perovskite-type powder with lesser particle size could be achieved with an organic solvent and had a better catalytic activity.