Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers
Iron-based materials are extensively employed as oxygen carriers in chemical looping processes, but their long-term performance is often inhibited by sintering and agglomeration. Here, we developed a yolk–shell structured Fe2O3@Y2O3 oxygen carrier, with each unit consisting of a Y2O3 shell encapsula...
Saved in:
Main Authors: | , , , , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://hdl.handle.net/10356/175777 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-175777 |
---|---|
record_format |
dspace |
spelling |
sg-ntu-dr.10356-1757772024-05-06T08:00:20Z Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers Fan, Qianwenhao Tan, Mingwu Yao, Bingqing Saqline, Syed Tao, Longgang He, Qian Liu, Wen School of Chemistry, Chemical Engineering and Biotechnology Cambridge Centre for Advanced Research and Education in Singapore Nanyang Environment and Water Research Institute Earth and Environmental Sciences Chemical looping Oxygen carriers Iron-based materials are extensively employed as oxygen carriers in chemical looping processes, but their long-term performance is often inhibited by sintering and agglomeration. Here, we developed a yolk–shell structured Fe2O3@Y2O3 oxygen carrier, with each unit consisting of a Y2O3 shell encapsulating a nano-sized Fe2O3 core. The Y2O3 shell could protect the redox-active cores from sintering, and the void between the yolk and the shell is capable of tolerating cyclic volume and phase changes. During the simulated chemical looping cycles at 600 °C, the Fe2O3@Y2O3 oxygen carriers exhibit a consistent oxygen carrying capacity of 3 wt% over 50 cycles, without any distinguishable structural deterioration. With rational structure optimization, the Fe2O3@Y2O3 oxygen carriers with porous shell could enhance the mass transfer across the shell and enable higher reaction rates. The satisfactory sintering resistance of the Fe2O3@Y2O3 nanostructure demonstrates the feasibility of employing well defined yolk–shell structured oxygen carriers for chemical looping applications. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) National Research Foundation (NRF) The authors would like to thank the financial support by Ministry of Education Singapore’s Academic Research Fund Tier 1 (RT03/19 and RG112/18) and the National Research Foundation (NRF), Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program. Q. He acknowledges the support from National Research Foundation (NRF) Singapore, under its NRF Fellowship (NRF-NRFF11-2019-0002). The authors thank the Singapore Low-Carbon Energy Research Funding Initiative hosted under A*STAR for the financial support (Award No. U2102d2005 and U2102d2006). 2024-05-06T08:00:20Z 2024-05-06T08:00:20Z 2024 Journal Article Fan, Q., Tan, M., Yao, B., Saqline, S., Tao, L., He, Q. & Liu, W. (2024). Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers. Applied Catalysis B: Environmental, 350, 123935-. https://dx.doi.org/10.1016/j.apcatb.2024.123935 0926-3373 https://hdl.handle.net/10356/175777 10.1016/j.apcatb.2024.123935 2-s2.0-85187203002 350 123935 en RT03/19 RG112/18 CREATE U2102d2005 U2102d2006 Applied Catalysis B: Environmental © 2024 Elsevier B.V. All rights reserved. |
institution |
Nanyang Technological University |
building |
NTU Library |
continent |
Asia |
country |
Singapore Singapore |
content_provider |
NTU Library |
collection |
DR-NTU |
language |
English |
topic |
Earth and Environmental Sciences Chemical looping Oxygen carriers |
spellingShingle |
Earth and Environmental Sciences Chemical looping Oxygen carriers Fan, Qianwenhao Tan, Mingwu Yao, Bingqing Saqline, Syed Tao, Longgang He, Qian Liu, Wen Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
description |
Iron-based materials are extensively employed as oxygen carriers in chemical looping processes, but their long-term performance is often inhibited by sintering and agglomeration. Here, we developed a yolk–shell structured Fe2O3@Y2O3 oxygen carrier, with each unit consisting of a Y2O3 shell encapsulating a nano-sized Fe2O3 core. The Y2O3 shell could protect the redox-active cores from sintering, and the void between the yolk and the shell is capable of tolerating cyclic volume and phase changes. During the simulated chemical looping cycles at 600 °C, the Fe2O3@Y2O3 oxygen carriers exhibit a consistent oxygen carrying capacity of 3 wt% over 50 cycles, without any distinguishable structural deterioration. With rational structure optimization, the Fe2O3@Y2O3 oxygen carriers with porous shell could enhance the mass transfer across the shell and enable higher reaction rates. The satisfactory sintering resistance of the Fe2O3@Y2O3 nanostructure demonstrates the feasibility of employing well defined yolk–shell structured oxygen carriers for chemical looping applications. |
author2 |
School of Chemistry, Chemical Engineering and Biotechnology |
author_facet |
School of Chemistry, Chemical Engineering and Biotechnology Fan, Qianwenhao Tan, Mingwu Yao, Bingqing Saqline, Syed Tao, Longgang He, Qian Liu, Wen |
format |
Article |
author |
Fan, Qianwenhao Tan, Mingwu Yao, Bingqing Saqline, Syed Tao, Longgang He, Qian Liu, Wen |
author_sort |
Fan, Qianwenhao |
title |
Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
title_short |
Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
title_full |
Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
title_fullStr |
Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
title_full_unstemmed |
Synthesis of uniform Fe2O3@Y2O3 yolk−shell nanoreactors as chemical looping oxygen carriers |
title_sort |
synthesis of uniform fe2o3@y2o3 yolk−shell nanoreactors as chemical looping oxygen carriers |
publishDate |
2024 |
url |
https://hdl.handle.net/10356/175777 |
_version_ |
1814047184200400896 |