Nanoscale Chemical Imaging of an Individual Catalyst Particle with Soft X-ray Ptychography
Abstract
Understanding Fe deposition in fluid catalytic cracking (FCC) catalysis is critical for the mitigation of catalyst degradation. We employ soft X-ray ptychography to determine at the nanoscale the distribution and chemical state of Fe in an aged FCC catalyst particle. We also show that both particle swelling due to colloidal Fe deposition and Fe penetration into the matrix as a result of precracking of large organic molecules occur. Furthermore, the application of ptychography allowed us to provide direct visual evidence for these two distinct Fe-based deactivation mechanisms, which have so far been proposed only on the basis of indirect evidence.
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1242441
- Alternate Identifier(s):
- OSTI ID: 1379261
- Grant/Contract Number:
- AC02-05CH11231; AC02-76SF00515
- Resource Type:
- Published Article
- Journal Name:
- ACS Catalysis
- Additional Journal Information:
- Journal Name: ACS Catalysis Journal Volume: 6; Journal ID: ISSN 2155-5435
- Publisher:
- American Chemical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; fluid catalytic cracking; chemical imaging; catalyst deactivation; iron and soft X-ray ptychography
Citation Formats
Wise, Anna M., Weker, Johanna Nelson, Kalirai, Sam, Farmand, Maryam, Shapiro, David A., Meirer, Florian, and Weckhuysen, Bert M. Nanoscale Chemical Imaging of an Individual Catalyst Particle with Soft X-ray Ptychography. United States: N. p., 2016.
Web. doi:10.1021/acscatal.6b00221.
Wise, Anna M., Weker, Johanna Nelson, Kalirai, Sam, Farmand, Maryam, Shapiro, David A., Meirer, Florian, & Weckhuysen, Bert M. Nanoscale Chemical Imaging of an Individual Catalyst Particle with Soft X-ray Ptychography. United States. https://doi.org/10.1021/acscatal.6b00221
Wise, Anna M., Weker, Johanna Nelson, Kalirai, Sam, Farmand, Maryam, Shapiro, David A., Meirer, Florian, and Weckhuysen, Bert M. Fri .
"Nanoscale Chemical Imaging of an Individual Catalyst Particle with Soft X-ray Ptychography". United States. https://doi.org/10.1021/acscatal.6b00221.
@article{osti_1242441,
title = {Nanoscale Chemical Imaging of an Individual Catalyst Particle with Soft X-ray Ptychography},
author = {Wise, Anna M. and Weker, Johanna Nelson and Kalirai, Sam and Farmand, Maryam and Shapiro, David A. and Meirer, Florian and Weckhuysen, Bert M.},
abstractNote = {Understanding Fe deposition in fluid catalytic cracking (FCC) catalysis is critical for the mitigation of catalyst degradation. We employ soft X-ray ptychography to determine at the nanoscale the distribution and chemical state of Fe in an aged FCC catalyst particle. We also show that both particle swelling due to colloidal Fe deposition and Fe penetration into the matrix as a result of precracking of large organic molecules occur. Furthermore, the application of ptychography allowed us to provide direct visual evidence for these two distinct Fe-based deactivation mechanisms, which have so far been proposed only on the basis of indirect evidence.},
doi = {10.1021/acscatal.6b00221},
journal = {ACS Catalysis},
number = ,
volume = 6,
place = {United States},
year = {Fri Apr 01 00:00:00 EDT 2016},
month = {Fri Apr 01 00:00:00 EDT 2016}
}
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https://doi.org/10.1021/acscatal.6b00221
https://doi.org/10.1021/acscatal.6b00221
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