摘要
采用微波离子交换法对Na-LSX型沸石分子筛进行NH+4交换。在固定液固比的条件下,考察了微波功率、交换液浓度、交换温度、液固比、时间以及次数对交换度的影响,并与传统水热离子交换法进行对比。得到了微波场辅助制备NH4-LSX型沸石分子筛的最佳工艺条件。
(NH4, Na)-LSX molecular sieves are prepared by substituting Na^+ of Na-LSX via microwave field assisted ion-exchange method. The effects of radiation power, concentration, liquid-solid ratio, temperature, exchanging time and exchanging frequency on the exchange degree are studied. This microwave field assisted ion-exchange method is also compared with the conventional aqueous solution exchange one. The optimal operation condition for preparation of NHA-LSX molecular sieves in microwave field is obtained as well.
出处
《现代化工》
CAS
CSCD
北大核心
2015年第6期91-94,共4页
Modern Chemical Industry
基金
国家自然科学基金(20973123)
国家重点基础研究发展计划(973计划)(2012CB215002)
国际科技与交流专项项目(2010DFB40440)
关键词
NH4-LSX型沸石分子筛
微波交换法
水溶液交换法
NH4-LSX molecular sieves
microwave radiation ion-exchange method aqueous solution exchange method