高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 538.

• 研究简报 • 上一篇    下一篇

NaX型沸石分子筛中吸附质分子结构与吸附热的关系

李宝宗1,2, 国永敏2, 庞文琴1   

  1. 1. 吉林大学无机合成与制备化学国家重点实验室, 长春 130023;
    2. 苏州大学化学化工系, 苏州 215006
  • 收稿日期:2001-06-20 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 庞文琴(1931年出生),女,教授,博士生导师,主要从事无机合成与固体化学研究.
  • 基金资助:

    国家重点基础研究发展规划项目(批准号:G200077507)资助.

A Relationship Between Adsorption Heat and Structure ofAdsorbate Molecule in NaX Zeolite Molecular Sieves

LI Bao-Zong1,2, GUO Yong-Min2, PANG Wen-Qin1   

  1. 1. State Key Laboratory of Inorganic Synthesis &Preparative Chemistry, Jilin University, Changchun 130023, China;
    2. Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China
  • Received:2001-06-20 Online:2002-04-24 Published:2002-04-24

关键词: NaX型沸石, 吸附质分子, 从头算, 分子图形技术, 定量构效关系

Abstract: In this paper, the molecular graphics techniques and the ab initio molecular orbital STO-3Gcal-culations were adopted to study the molecular sizes and electronic structures of 24 molecules as adsorbate inthe NaX zeolite.Further more, the interaction energies of various molecules with Na+ were studied by abinitio calculations.The results show that there exists a significant correlation between the adsorption heatand molecular polarizability of the alkane(R= 0.998, F= 831.155, S=1.241, N= 6).Meanwhile signif-icant multivariate correlation was found between the adsorption heat and interaction energies of variousmolecules with Na+, molecular Van der Waals volumes and lowest unoccupied orbital energies, in which Na+ takes an important role as the intermediate.

Key words: NaX zeolite, Adsorbate, Ab initio, Molecular graphics techniques, Quantitative structure-property relationship

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