Subject Area物理化学
Hyperpolarized 129Xe NMR for Investigation of Porous Materials and Reaction Kinetics
Zhang WP(张维萍); Xu ST(徐舒涛); Liu Y(刘勇); Han XW(韩秀文); Bao XH(包信和)
Conference Name16th International Zeolite Conference & 7th International Mesostructured Materials Symposium
Conference Date2010-7-4
Conference Place意大利
Funding Organization国际分子筛学会
AbstractIt is well known that the porous structures of zeolites are very crucial for their shape selectivity in catalytic reactions. In this study, one- and two-dimensional hyperpolarized 129Xe NMR spectroscopy has been used to investigate the porosity of catalytic materials, such as the identification of mesopores in TS-1/TiHMS micro/mesoporous composites and mesoporous ZSM-5 zeolites, the connectivity of pores in co-crystallized MCM-49/ZSM-35 zeolites, etc. The distribution of catalyst in the support can also be detected. Examples are illustrated by metallic Ga in MCM-41 and MoO3 in HBeta zeolite and alumina composite support. Additionally, the adsorption and reaction kinetics of methanol in CHA zeolites can be traced by variable-temperature measurements. This approach is also extended to study the diffusion kinetics of methanol in single-walled carbon nanotubes (SWCNTs).
Document Type会议论文
Corresponding AuthorZhang WP(张维萍)
Recommended Citation
GB/T 7714
Zhang WP,Xu ST,Liu Y,et al. Hyperpolarized 129Xe NMR for Investigation of Porous Materials and Reaction Kinetics[C],2010:131/2.
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