The cluster beam route to model catalysts and beyond

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The cluster beam route to model catalysts and beyond. / Ellis, Peter; Brown, Christopher M; Bishop, Peter Trenton; Yin, Jinlong; Cooke, Kevin; Terry, William David; Liu, Jian; Yin, Feng; Palmer, Richard.

In: Faraday Discussions, 20.01.2016.

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@article{9faaa0795a0e44aea19e46fdcb5e3de2,
title = "The cluster beam route to model catalysts and beyond",
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 to the preparation of model catalyst particles. Compared with the colloidal route to 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 her 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 method.",
author = "Peter Ellis and Brown, {Christopher M} and Bishop, {Peter Trenton} and Jinlong Yin and Kevin Cooke and Terry, {William David} and Jian Liu and Feng Yin and Richard Palmer",
year = "2016",
month = jan,
day = "20",
doi = "10.1039/C5FD00178A",
language = "English",
journal = "Faraday Discussions",
issn = "1359-6640",
publisher = "Royal Society of Chemistry",

}

RIS

TY - JOUR

T1 - The cluster beam route to model catalysts and beyond

AU - Ellis, Peter

AU - Brown, Christopher M

AU - Bishop, Peter Trenton

AU - Yin, Jinlong

AU - Cooke, Kevin

AU - Terry, William David

AU - Liu, Jian

AU - Yin, Feng

AU - Palmer, Richard

PY - 2016/1/20

Y1 - 2016/1/20

N2 - 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 to the preparation of model catalyst particles. Compared with the colloidal route to 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 her 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 method.

AB - 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 to the preparation of model catalyst particles. Compared with the colloidal route to 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 her 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 method.

U2 - 10.1039/C5FD00178A

DO - 10.1039/C5FD00178A

M3 - Article

JO - Faraday Discussions

JF - Faraday Discussions

SN - 1359-6640

ER -