Cargando…

Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)

Annealed Rh nanoclusters on an ordered thin film of Al(2)O(3)/NiAl(100) were shown to exhibit a promoted reactivity toward the decomposition of methanol-d(4), under both ultrahigh vacuum and near-ambient-pressure conditions. The Rh clusters were grown with vapor deposition onto the Al(2)O(3)/NiAl(10...

Descripción completa

Detalles Bibliográficos
Autores principales: Hung, Ting-Chieh, Liao, Ting-Wei, Liao, Guan-Jr, Liao, Zhen-He, Hsu, Po-Wei, Lai, Yu-Ling, Hsu, Yao-Jane, Wang, Chia-Hsin, Yang, Yaw-Wen, Wang, Jeng-Han, Luo, Meng-Fan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9036867/
https://www.ncbi.nlm.nih.gov/pubmed/35481058
http://dx.doi.org/10.1039/d1ra04066a
_version_ 1784693607749386240
author Hung, Ting-Chieh
Liao, Ting-Wei
Liao, Guan-Jr
Liao, Zhen-He
Hsu, Po-Wei
Lai, Yu-Ling
Hsu, Yao-Jane
Wang, Chia-Hsin
Yang, Yaw-Wen
Wang, Jeng-Han
Luo, Meng-Fan
author_facet Hung, Ting-Chieh
Liao, Ting-Wei
Liao, Guan-Jr
Liao, Zhen-He
Hsu, Po-Wei
Lai, Yu-Ling
Hsu, Yao-Jane
Wang, Chia-Hsin
Yang, Yaw-Wen
Wang, Jeng-Han
Luo, Meng-Fan
author_sort Hung, Ting-Chieh
collection PubMed
description Annealed Rh nanoclusters on an ordered thin film of Al(2)O(3)/NiAl(100) were shown to exhibit a promoted reactivity toward the decomposition of methanol-d(4), under both ultrahigh vacuum and near-ambient-pressure conditions. The Rh clusters were grown with vapor deposition onto the Al(2)O(3)/NiAl(100) surface at 300 K and annealed to 700 K. The decomposition of methanol-d(4) proceeded only through dehydrogenation, with CO and deuterium as products, on Rh clusters both as prepared and annealed. Nevertheless, the catalytic reactivity of the annealed clusters, measured with the production of either CO or deuterium per surface Rh site from the reaction, became at least 2–3 times that of the as-prepared ones. The promoted reactivity results from an altered support effect associated with an annealing-induced mass transport at the surface. Our results demonstrate a possibility to practically prepare reactive Rh clusters, regardless of the cluster size, that can tolerate an elevated reaction temperature, with no decreased reactivity.
format Online
Article
Text
id pubmed-9036867
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90368672022-04-26 Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4) Hung, Ting-Chieh Liao, Ting-Wei Liao, Guan-Jr Liao, Zhen-He Hsu, Po-Wei Lai, Yu-Ling Hsu, Yao-Jane Wang, Chia-Hsin Yang, Yaw-Wen Wang, Jeng-Han Luo, Meng-Fan RSC Adv Chemistry Annealed Rh nanoclusters on an ordered thin film of Al(2)O(3)/NiAl(100) were shown to exhibit a promoted reactivity toward the decomposition of methanol-d(4), under both ultrahigh vacuum and near-ambient-pressure conditions. The Rh clusters were grown with vapor deposition onto the Al(2)O(3)/NiAl(100) surface at 300 K and annealed to 700 K. The decomposition of methanol-d(4) proceeded only through dehydrogenation, with CO and deuterium as products, on Rh clusters both as prepared and annealed. Nevertheless, the catalytic reactivity of the annealed clusters, measured with the production of either CO or deuterium per surface Rh site from the reaction, became at least 2–3 times that of the as-prepared ones. The promoted reactivity results from an altered support effect associated with an annealing-induced mass transport at the surface. Our results demonstrate a possibility to practically prepare reactive Rh clusters, regardless of the cluster size, that can tolerate an elevated reaction temperature, with no decreased reactivity. The Royal Society of Chemistry 2021-07-15 /pmc/articles/PMC9036867/ /pubmed/35481058 http://dx.doi.org/10.1039/d1ra04066a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Hung, Ting-Chieh
Liao, Ting-Wei
Liao, Guan-Jr
Liao, Zhen-He
Hsu, Po-Wei
Lai, Yu-Ling
Hsu, Yao-Jane
Wang, Chia-Hsin
Yang, Yaw-Wen
Wang, Jeng-Han
Luo, Meng-Fan
Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title_full Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title_fullStr Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title_full_unstemmed Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title_short Promoted activity of annealed Rh nanoclusters on thin films of Al(2)O(3)/NiAl(100) in the dehydrogenation of Methanol-d(4)
title_sort promoted activity of annealed rh nanoclusters on thin films of al(2)o(3)/nial(100) in the dehydrogenation of methanol-d(4)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9036867/
https://www.ncbi.nlm.nih.gov/pubmed/35481058
http://dx.doi.org/10.1039/d1ra04066a
work_keys_str_mv AT hungtingchieh promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT liaotingwei promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT liaoguanjr promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT liaozhenhe promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT hsupowei promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT laiyuling promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT hsuyaojane promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT wangchiahsin promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT yangyawwen promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT wangjenghan promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4
AT luomengfan promotedactivityofannealedrhnanoclustersonthinfilmsofal2o3nial100inthedehydrogenationofmethanold4