STABILITY OF RADIATION GRAFTED MEMBRANES IN ELECTRO-ELECRODIALYSIS OF HIX SOLUTION
Japan Atomic Energy Agency has been conducting research and development on a thermochemical water-splitting cycle featuring iodine-and sulfur-compounds (called an IS process)as one of promising heat utilization systems of High Temperature Gas-Cooled Reactors.We have prepared polymer electrolyte membranes by the radiation-induced graft polymerization and cross-linking methods and then have investigated their applicability to electro-electrodialysis (EED)for concentrating HI in an HI-I2-H2O mixture.For practical applications,EED membranes are required to be stable in the severe environment of high-temperature strongly acidic solutions.We thus examined thermal,chemical and electrochemical stabilities of the radiation-grafted membranes under the conditions of the actual EED operation over 100 hours,while measuring the time evolution of a cell voltage and a change in the ion exchange capacity between the EED experiment.The results showed that chemical cross-linking in the graft chains could largely improve the membrane stability.
Nobuyuki Tanaka Tetsuya Yamaki Masaharu Asano Yasunari Maekawa Kaoru Onuki Ryutaro Hino
Japan Atomic Energy Agency Ibaraki,Japan Japan Atomic Energy Agency Gunma,Japan
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-5
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）