129Xe NMR研究MCM-22分子筛中的Xe-Xe作用

波谱学杂志

¹²⁹Xe NMR研究MCM-22分子筛中的Xe-Xe作用

陈方1，邓风1*，程谟杰2，岳勇1*，叶朝辉1

1.中国科学院武汉物理与数学所波谱与原子分子物理国家重点实验室，武汉 430071 ;
2.中国科学院大连化学物理研究所催化基础国家重点实验室，大连 116023

收稿日期:2001-09-29 修回日期:2001-12-04 出版日期:2002-03-05 发布日期:2002-03-05
作者简介:陈方(1973-)，男，博士研究生. *通讯联系人
基金资助:
国家自然科学基金资助项目(29873065).

¹²⁹Xe NMR INVESTIGATION OF THE Xe-Xe COLLISIONS IN ZEOLITE MCM-22

CHEN fang1, DENG Feng1*, CHENG Mo-jie2, YUE Yong1*, YE Chao-hui1

1.State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, Wuh an 430071, China;
2.State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, China

Received:2001-09-29 Revised:2001-12-04 Online:2002-03-05 Published:2002-03-05
About author:*Correspondence author
Supported by:
国家自然科学基金资助项目(29873065).

摘要/Abstract

摘要：

¹²⁹Xe NMR 测量得到Xe-Xe碰撞产生的δ_Xe-Xe，该值要比自由的Xe和在NaY、CaA分子筛中的值小很多. 通过一定的理论分析，证明在MCM-22分子筛超笼中的Xe-Xe碰撞作用类似于一维气体碰撞，同时表明δ_Xe-Xe也和δ_S（由Xe与孔壁碰撞产生的化学位移）一样与分子筛的孔道结构密切相关. 

关键词: ¹²⁹Xe NMR, MCM-22, 碰撞

Abstract:

We have measured the δ_Xe-Xe (arising from Xe-Xe collisions) by ¹²⁹Xe NMR spectroscopy, which is much smaller than that of Xe in the gas phase and those of Xe adsorbed in NaY and CaA zeolites. The Xe-Xe collisions in the supercages behaves like o n e dimensional gas collisions. This result suggusts that δ_Xe-Xe is al so related to the size and shape of internal cavity.

Key words: ¹²⁹Xe NMR, MCM-22, collisions, δ_{X e-Xe}

中图分类号:

O482.53

陈方1，邓风1*，程谟杰2，岳勇1*，叶朝辉1. ¹²⁹Xe NMR研究MCM-22分子筛中的Xe-Xe作用[J]. 波谱学杂志.

CHEN fang1, DENG Feng1*, CHENG Mo-jie2, YUE Yong1*, YE Chao-hui1. ¹²⁹Xe NMR INVESTIGATION OF THE Xe-Xe COLLISIONS IN ZEOLITE MCM-22[J]. Chinese Journal of Magnetic Resonance.

¹²⁹Xe NMR研究MCM-22分子筛中的Xe-Xe作用

¹²⁹Xe NMR INVESTIGATION OF THE Xe-Xe COLLISIONS IN ZEOLITE MCM-22

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