Design of optimum solid oxide membrane electrolysis cells for metals production

Oxide to metal conversion is one of the most energy-intensive steps in the value chain for metals production. Solid oxide membrane (SOM) electrolysis process provides a general route for directly reducing various metal oxides to their respective metals, alloys, or intermetallics. Because of its lower energy use and ability to use inert anode resulting in zero carbon emission, SOM electrolysis process emerges as a promising technology that can replace the state-of-the-art metals production processes. In this paper, a careful study of the SOM electrolysis process using equivalent DC circuit modeling is performed and correlated to the experimental results. A discussion on relative importance of each resistive element in the circuit and on possible ways of lowering the rate-limiting resistive elements provides a generic guideline for designing optimum SOM electrolysis cells.     

叶面施硼对蚕豆膜脂过氧化作用及膜保护系统的影响

蚕豆不同生长期用不同浓度的硼酸溶液进行叶面喷施．结果表明，在幼苗期、现蕾期和开花期喷施不同浓度硼酸溶液，能增强蚕豆叶片的SOD活性和CAT活性，降低O2^-生成速率和MDA含量．于开花期前喷施0．1％-0.2％的硼酸溶液最为有效．     

高性能聚氨酯多孔支撑膜的研制

采用溶液相转换法制备聚氨酯（PU）多孔支撑膜，通过改变聚氨酯制膜液中聚氨酯含量、添加剂颗粒大小及含量、溶剂的组成、凝固浴的组成，研究了PU多孔支撑膜的制备条件与多孔支撑膜性能的关系。研究结果表明，制膜液中聚氨酯和添加剂含量对膜性能影响较大；使用混合溶剂可有效改善膜的孔结构，提高支撑膜的性能；控制凝胶浴中溶剂含量，可进一步提高聚氨酯支撑膜的性能稳定性。     

聚丙烯腈超滤膜铸膜液配方的优选试验

采用正交法对处理含油污水用的聚丙烯腈（ＰＡＮ）超滤膜铸膜液配方进行了优选．试验证明，用正交法进行铸膜液配方的优选时，能找出各因素及其交互作用对膜性能的影响．用较少量的实验即可优选出最佳的铸膜液配方．该配方可作为制备处理含油污水用ＰＡＮ超滤膜的依据     

叶面施锰对豌豆膜脂过氧化作用及膜保护系统的影响

豌豆不同生长期用不同浓度的硫酸锰溶液进行叶面喷施.结果表明,在幼苗期、现蕾期和开花期喷施不同浓度硫酸锰溶液,能增强豌豆叶片的SOD活性和CAT活性,降低O2-生成速率和MDA含量;于开花期前喷施最为有效的硫酸锰溶液质量百分浓度为0.1%-0.2%.