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The cluster beam route to model catalysts and beyond

Peter R. Ellis, Christopher M. Brown, Peter T. Bishop, Jinlong Yin, Kevin Cooke, William D. Terry, Jian Liu, Feng Yin, Richard Palmer Orcid Logo

Faraday Discussions, Volume: 188, Pages: 39 - 56

Swansea University Author: Richard Palmer Orcid Logo

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DOI (Published version): 10.1039/c5fd00178a

Abstract

The generation of beams of atomic clusters in the gas phase and their subsequent deposition (in vacuum) onto suitable catalyst supports, possibly after an intermediate mass filtering step, represents a new and attractive approach for the preparation of model catalyst particles. Compared with the col...

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Published in: Faraday Discussions
ISSN: 1359-6640 1364-5498
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa49237
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spelling 2019-07-30T10:56:57.1611936 v2 49237 2019-03-18 The cluster beam route to model catalysts and beyond 6ae369618efc7424d9774377536ea519 0000-0001-8728-8083 Richard Palmer Richard Palmer true false 2019-03-18 MECH The generation of beams of atomic clusters in the gas phase and their subsequent deposition (in vacuum) onto suitable catalyst supports, possibly after an intermediate mass filtering step, represents a new and attractive approach for the preparation of model catalyst particles. Compared with the colloidal route to the production of pre-formed catalytic nanoparticles, the nanocluster beam approach offers several advantages: the clusters produced in the beam have no ligands, their size can be selected to arbitrarily high precision by the mass filter, and metal particles containing challenging combinations of metals can be readily produced. However, until now the cluster approach has been held back by the extremely low rates of metal particle production, of the order of 1 microgram per hour. This is more than sufficient for surface science studies but several orders of magnitude below what is desirable even for research-level reaction studies under realistic conditions. In this paper we describe solutions to this scaling problem, specifically, the development of two new generations of cluster beam sources, which suggest that cluster beam yields of grams per hour may ultimately be feasible. Moreover, we illustrate the effectiveness of model catalysts prepared by cluster beam deposition onto agitated powders in the selective hydrogenation of 1-pentyne (a gas phase reaction) and 3-hexyn-1-ol (a liquid phase reaction). Our results for elemental Pd and binary PdSn and PdTi cluster catalysts demonstrate favourable combinations of yield and selectivity compared with reference materials synthesised by conventional methods. Journal Article Faraday Discussions 188 39 56 1359-6640 1364-5498 31 12 2016 2016-12-31 10.1039/c5fd00178a COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2019-07-30T10:56:57.1611936 2019-03-18T14:28:30.0354946 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering Peter R. Ellis 1 Christopher M. Brown 2 Peter T. Bishop 3 Jinlong Yin 4 Kevin Cooke 5 William D. Terry 6 Jian Liu 7 Feng Yin 8 Richard Palmer 0000-0001-8728-8083 9 0049237-26032019142731.pdf ellis2016.pdf 2019-03-26T14:27:31.9870000 Output 4996392 application/pdf Version of Record true 2019-03-26T00:00:00.0000000 true eng
title The cluster beam route to model catalysts and beyond
spellingShingle The cluster beam route to model catalysts and beyond
Richard Palmer
title_short The cluster beam route to model catalysts and beyond
title_full The cluster beam route to model catalysts and beyond
title_fullStr The cluster beam route to model catalysts and beyond
title_full_unstemmed The cluster beam route to model catalysts and beyond
title_sort The cluster beam route to model catalysts and beyond
author_id_str_mv 6ae369618efc7424d9774377536ea519
author_id_fullname_str_mv 6ae369618efc7424d9774377536ea519_***_Richard Palmer
author Richard Palmer
author2 Peter R. Ellis
Christopher M. Brown
Peter T. Bishop
Jinlong Yin
Kevin Cooke
William D. Terry
Jian Liu
Feng Yin
Richard Palmer
format Journal article
container_title Faraday Discussions
container_volume 188
container_start_page 39
publishDate 2016
institution Swansea University
issn 1359-6640
1364-5498
doi_str_mv 10.1039/c5fd00178a
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Mechanical Engineering
document_store_str 1
active_str 0
description The generation of beams of atomic clusters in the gas phase and their subsequent deposition (in vacuum) onto suitable catalyst supports, possibly after an intermediate mass filtering step, represents a new and attractive approach for the preparation of model catalyst particles. Compared with the colloidal route to the production of pre-formed catalytic nanoparticles, the nanocluster beam approach offers several advantages: the clusters produced in the beam have no ligands, their size can be selected to arbitrarily high precision by the mass filter, and metal particles containing challenging combinations of metals can be readily produced. However, until now the cluster approach has been held back by the extremely low rates of metal particle production, of the order of 1 microgram per hour. This is more than sufficient for surface science studies but several orders of magnitude below what is desirable even for research-level reaction studies under realistic conditions. In this paper we describe solutions to this scaling problem, specifically, the development of two new generations of cluster beam sources, which suggest that cluster beam yields of grams per hour may ultimately be feasible. Moreover, we illustrate the effectiveness of model catalysts prepared by cluster beam deposition onto agitated powders in the selective hydrogenation of 1-pentyne (a gas phase reaction) and 3-hexyn-1-ol (a liquid phase reaction). Our results for elemental Pd and binary PdSn and PdTi cluster catalysts demonstrate favourable combinations of yield and selectivity compared with reference materials synthesised by conventional methods.
published_date 2016-12-31T04:00:04Z
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score 11.017642

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