高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (10): 1857.

• 论文 • 上一篇    下一篇

预吸附微波合成纳米NaY沸石晶种制备NaY型分子筛膜

程志林1,2, 林海强2, 晁自胜2, 万惠霖2   

  1. 1. 华东师范大学化学系, 上海 200062;
    2. 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门 361005
  • 收稿日期:2002-10-30 出版日期:2003-10-24 发布日期:2003-10-24
  • 通讯作者: 程志林(1974年出生),男,博士研究生,从事纳米分子筛和无机膜分离研究.E-mail:zlcheng224@sohu.com E-mail:zlcheng224@sohu.com
  • 基金资助:

    国家重点研究发展规划项目(批准号:G1999022401);国家自然科学基金(批准号:K16161)资助

NaY Zeolite Membrane Prepared by Using Pre-absorbed Nanosized NaY Zeolite Synthesized by Microwave Heating

CHENG Zhi-Lin1,2, LIN Hai-Qiang2, CHAO Zi-Sheng2, WAN Hui-Lin2   

  1. 1. Department of Chemistry, East NormaLUniversity, Shanghai 200062, China;
    2. State Key Laboratory for Physical Chemistry of Solid Surface, Department of Chemistry, Xiamen University, Xiamen 361005, China
  • Received:2002-10-30 Online:2003-10-24 Published:2003-10-24

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被引次数

28

摘要： 在常压回流的微波加热体系中成功地合成出纳米尺寸的NaY分子筛,XRD和SEM等表征结果表明,分子筛具有40nm左右的平均晶粒尺寸.以其为晶种,预吸附在多孔氧化铝载体上,结合原位水热法进行二次晶化,制备出较为致密的NaY分子筛膜,该膜主要以孪生聚晶的形式存在.CO2/N2气体分离测试结果显示,随着温度的升高,分子筛膜的气体分离能力呈上升趋势,在140℃时真实选择分离系数达到最大值4.0.

关键词: 微波加热, 纳米, NaY分子筛膜, 分离

Abstract: Nanosized NaY zeolite was successfully synthesized by microwave heating at an ambient pressure and under reflux.The XRD and SEM results indicate that the resulted NaY zeolite has an average crystal size of 40nm.The compact NaY zeolite membranes consisting of twinborn and polycrystalline crystal were synthesized on a porous alumina substrate by using pre-absorbed nanosized NaY zeolite obtained above and then by being combined with a secondary in situ synthesis.The measuring result for the separation of CO2/N2mixture show that the separating selectivity increased with increasing temperature, and reached a maximum of 4.0 at 140 ℃.

Key words: Microwave heating, Nanometer, NaY Zeolite membrane, Separation

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