Direct probing of heterogeneity for adsorption and diffusion within a SAPO-34 crystal

Shushu Gao; Shutao Xu; Yingxu Wei; Zhiqiang Liu; Anmin Zheng; Pengfei Wu; Zhongmin Liu

doi:10.1039/c9cc05322k

Direct probing of heterogeneity for adsorption and diffusion within a SAPO-34 crystal

Chem Commun (Camb). 2019 Sep 16;55(72):10693-10696. doi: 10.1039/c9cc05322k. Epub 2019 Aug 15.

Authors

Shushu Gao¹, Shutao Xu², Yingxu Wei², Zhiqiang Liu³, Anmin Zheng⁴, Pengfei Wu², Zhongmin Liu⁵

Affiliations

¹ National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. xushutao@dicp.ac.cn weiyx@dicp.ac.cn liuzm@dicp.ac.cn and University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
² National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. xushutao@dicp.ac.cn weiyx@dicp.ac.cn liuzm@dicp.ac.cn.
³ State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
⁴ State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, P. R. China and School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China.
⁵ National Engineering Laboratory for Methanol to Olefins, Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China. xushutao@dicp.ac.cn weiyx@dicp.ac.cn liuzm@dicp.ac.cn and State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China.

PMID: 31414676
DOI: 10.1039/c9cc05322k

Abstract

The inhomogeneous phenomenon with a gradient distribution in adsorption and diffusion behaviors of xenon within a large SAPO-34 crystal was revealed by ¹²⁹Xe NMR, 2D EXSY NMR and ¹²⁹Xe PFG NMR techniques at the micro-scale. A multi-layer adsorption and diffusion model for xenon in a single crystal was proposed.