氩吸附法研究多级孔分子筛的孔结构

刘丽萍 贾玉华

引用本文: 刘丽萍, 贾玉华. 氩吸附法研究多级孔分子筛的孔结构[J]. 燃料化学学报, 2015, 43(3): 379-384. shu
Citation:  LIU Li-ping, JIA Yu-hua. Pore structures of hierarchical porous molecular sieves observed by Ar adsorption[J]. Journal of Fuel Chemistry and Technology, 2015, 43(3): 379-384. shu

氩吸附法研究多级孔分子筛的孔结构

    通讯作者: 刘丽萍,Tel:0411-84986139,E-mail:liuliping@dlut.edu.cn。
  • 基金项目:

    国家自然科学基金(21206017)。 (21206017)

摘要: 采用不同方法分别制备了双介孔分子筛、介微孔分子筛及介孔沸石材料,利用氩吸附法并结合XRD技术表征了多级孔分子筛的孔结构。探讨了适用于多级孔分子筛的孔径分布计算方法,揭示了不同类型吸附等温线与孔径分布、孔型及孔容等之间的关系。研究表明,对于多级孔分子筛、微孔和介孔的孔径分布分别用SF法和BJH法计算较适宜,全孔分析可用NLDFT法计算。通过对TS-1介孔沸石的孔结构分析发现, TPAOH 在改性制备介孔TS-1的过程中起到了生成介孔及促进二次晶化的双重作用。

English

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