Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals
Abstract
Here, SAPO-34 is widely used as a catalyst for important industrial reactions, such as the methanol-to-olefin (MTO) reaction and selective catalytic reduction (SCR) of nitrogen oxides (NOx). The internal structure of SAPO-34 has a great influence on the catalytic performance. Two-dimensional (2D) images of the SAPO-34 particle surfaces from scanning electron microscopy (SEM) show clearly well-faceted cube morphologies, which suggest they should be quite uniform perfect crystals. However, Bragg coherent X-ray diffraction imaging (BCDI) of the SAPO-34 particles shows a rich internal structure existing within these crystals. In this work, we investigated the internal structure of a SAPO-34 zeolite by serial block-face scanning electron microscopy (SBFSEM). The internal structure observed in the backscattered electron (BSE) micrographs from SBFSEM and the energy dispersive spectroscopy (EDS) measurements is found to be consistent with the BCDI results. From the three-dimensional (3D) structural images of SAPO-34 crystals obtained by SBFSEM, the domains within the individual SAPO-34 were visualized and quantified.
- Authors:
-
[1];
[2];
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China
- School of Materials Science and Engineering, Tongji University, Shanghai 201804, China, London Centre for Nanotechnology
- Division of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, NY 11973, USA
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1475077
- Alternate Identifier(s):
- OSTI ID: 1477480
- Report Number(s):
- BNL-209157-2018-JAAM
Journal ID: ISSN 2046-2069; RSCACL
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Published Article
- Journal Name:
- RSC Advances
- Additional Journal Information:
- Journal Name: RSC Advances Journal Volume: 8 Journal Issue: 59; Journal ID: ISSN 2046-2069
- Publisher:
- Royal Society of Chemistry (RSC)
- Country of Publication:
- United Kingdom
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, and Robinson, Ian. Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals. United Kingdom: N. p., 2018.
Web. doi:10.1039/C8RA05918G.
Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, & Robinson, Ian. Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals. United Kingdom. https://doi.org/10.1039/C8RA05918G
Bai, Xue, Chen, Bo, Yang, Fei, Liu, Xianping, Silva-Nunes, Daniel, and Robinson, Ian. Mon .
"Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals". United Kingdom. https://doi.org/10.1039/C8RA05918G.
@article{osti_1475077,
title = {Three-dimensional imaging and analysis of the internal structure of SAPO-34 zeolite crystals},
author = {Bai, Xue and Chen, Bo and Yang, Fei and Liu, Xianping and Silva-Nunes, Daniel and Robinson, Ian},
abstractNote = {Here, SAPO-34 is widely used as a catalyst for important industrial reactions, such as the methanol-to-olefin (MTO) reaction and selective catalytic reduction (SCR) of nitrogen oxides (NOx). The internal structure of SAPO-34 has a great influence on the catalytic performance. Two-dimensional (2D) images of the SAPO-34 particle surfaces from scanning electron microscopy (SEM) show clearly well-faceted cube morphologies, which suggest they should be quite uniform perfect crystals. However, Bragg coherent X-ray diffraction imaging (BCDI) of the SAPO-34 particles shows a rich internal structure existing within these crystals. In this work, we investigated the internal structure of a SAPO-34 zeolite by serial block-face scanning electron microscopy (SBFSEM). The internal structure observed in the backscattered electron (BSE) micrographs from SBFSEM and the energy dispersive spectroscopy (EDS) measurements is found to be consistent with the BCDI results. From the three-dimensional (3D) structural images of SAPO-34 crystals obtained by SBFSEM, the domains within the individual SAPO-34 were visualized and quantified.},
doi = {10.1039/C8RA05918G},
journal = {RSC Advances},
number = 59,
volume = 8,
place = {United Kingdom},
year = {Mon Jan 01 00:00:00 EST 2018},
month = {Mon Jan 01 00:00:00 EST 2018}
}
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