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Confined Ru Sites in a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition
[Image: see text] Catalytic NH(3) synthesis and decomposition offer a new promising way to store and transport renewable energy in the form of NH(3) from remote or offshore sites to industrial plants. To use NH(3) as a hydrogen carrier, it is important to understand the catalytic functionality of NH...
Autores principales: | , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10326886/ https://www.ncbi.nlm.nih.gov/pubmed/37343126 http://dx.doi.org/10.1021/jacs.3c05092 |
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author | Leung, Kwan Chee Hong, Sungil Li, Guangchao Xing, Youdong Ng, Bryan Kit Yue Ho, Ping-Luen Ye, Dongpei Zhao, Pu Tan, Ephraem Safonova, Olga Wu, Tai-Sing Li, Molly Meng-Jung Mpourmpakis, Giannis Tsang, Shik Chi Edman |
author_facet | Leung, Kwan Chee Hong, Sungil Li, Guangchao Xing, Youdong Ng, Bryan Kit Yue Ho, Ping-Luen Ye, Dongpei Zhao, Pu Tan, Ephraem Safonova, Olga Wu, Tai-Sing Li, Molly Meng-Jung Mpourmpakis, Giannis Tsang, Shik Chi Edman |
author_sort | Leung, Kwan Chee |
collection | PubMed |
description | [Image: see text] Catalytic NH(3) synthesis and decomposition offer a new promising way to store and transport renewable energy in the form of NH(3) from remote or offshore sites to industrial plants. To use NH(3) as a hydrogen carrier, it is important to understand the catalytic functionality of NH(3) decomposition reactions at an atomic level. Here, we report for the first time that Ru species confined in a 13X zeolite cavity display the highest specific catalytic activity of over 4000 h(–1) for the NH(3) decomposition with a lower activation barrier, compared to most reported catalytic materials in the literature. Mechanistic and modeling studies clearly indicate that the N–H bond of NH(3) is ruptured heterolytically by the frustrated Lewis pair of Ru(δ+)–O(δ−) in the zeolite identified by synchrotron X-rays and neutron powder diffraction with Rietveld refinement as well as other characterization techniques including solid-state nuclear magnetic resonance spectroscopy, in situ diffuse reflectance infrared transform spectroscopy, and temperature-programmed analysis. This contrasts with the homolytic cleavage of N–H displayed by metal nanoparticles. Our work reveals the unprecedented unique behavior of cooperative frustrated Lewis pairs created by the metal species on the internal zeolite surface, resulting in a dynamic hydrogen shuttling from NH(3) to regenerate framework Brønsted acid sites that eventually are converted to molecular hydrogen. |
format | Online Article Text |
id | pubmed-10326886 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-103268862023-07-08 Confined Ru Sites in a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition Leung, Kwan Chee Hong, Sungil Li, Guangchao Xing, Youdong Ng, Bryan Kit Yue Ho, Ping-Luen Ye, Dongpei Zhao, Pu Tan, Ephraem Safonova, Olga Wu, Tai-Sing Li, Molly Meng-Jung Mpourmpakis, Giannis Tsang, Shik Chi Edman J Am Chem Soc [Image: see text] Catalytic NH(3) synthesis and decomposition offer a new promising way to store and transport renewable energy in the form of NH(3) from remote or offshore sites to industrial plants. To use NH(3) as a hydrogen carrier, it is important to understand the catalytic functionality of NH(3) decomposition reactions at an atomic level. Here, we report for the first time that Ru species confined in a 13X zeolite cavity display the highest specific catalytic activity of over 4000 h(–1) for the NH(3) decomposition with a lower activation barrier, compared to most reported catalytic materials in the literature. Mechanistic and modeling studies clearly indicate that the N–H bond of NH(3) is ruptured heterolytically by the frustrated Lewis pair of Ru(δ+)–O(δ−) in the zeolite identified by synchrotron X-rays and neutron powder diffraction with Rietveld refinement as well as other characterization techniques including solid-state nuclear magnetic resonance spectroscopy, in situ diffuse reflectance infrared transform spectroscopy, and temperature-programmed analysis. This contrasts with the homolytic cleavage of N–H displayed by metal nanoparticles. Our work reveals the unprecedented unique behavior of cooperative frustrated Lewis pairs created by the metal species on the internal zeolite surface, resulting in a dynamic hydrogen shuttling from NH(3) to regenerate framework Brønsted acid sites that eventually are converted to molecular hydrogen. American Chemical Society 2023-06-21 /pmc/articles/PMC10326886/ /pubmed/37343126 http://dx.doi.org/10.1021/jacs.3c05092 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Leung, Kwan Chee Hong, Sungil Li, Guangchao Xing, Youdong Ng, Bryan Kit Yue Ho, Ping-Luen Ye, Dongpei Zhao, Pu Tan, Ephraem Safonova, Olga Wu, Tai-Sing Li, Molly Meng-Jung Mpourmpakis, Giannis Tsang, Shik Chi Edman Confined Ru Sites in a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title | Confined Ru Sites in
a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title_full | Confined Ru Sites in
a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title_fullStr | Confined Ru Sites in
a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title_full_unstemmed | Confined Ru Sites in
a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title_short | Confined Ru Sites in
a 13X Zeolite for Ultrahigh H(2) Production from NH(3) Decomposition |
title_sort | confined ru sites in
a 13x zeolite for ultrahigh h(2) production from nh(3) decomposition |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10326886/ https://www.ncbi.nlm.nih.gov/pubmed/37343126 http://dx.doi.org/10.1021/jacs.3c05092 |
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