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Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin

Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin
Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin
When anchored on a high-area, siliceous supports, nanoparticle catalysts, consisting of two or three different metals, but totaling no more than twenty atoms in all, exhibit exceptional activities and selectivities in solvent-free, one-step hydrogenation reactions at low temperatures (<420 K) and much lower pressures (e.g. 30 bar) than those required in current industrial manufacture. The two selective hydrogenations illustrated here are the conversion of (a) cyclododecatriene (CDT) to cyclododecene (CD) and (b) dimethyl terephthalate (DMT) to cyclohexane dimethanol (CHDM); each of these products is extensively used in the polymer industry. All our mixed-metal nanoparticles are derived from an appropriately chosen parent (precursor) mixed-metal carbonyl having phenyl-containing tin ligands, e.g. Ru4(µ4-SnPh)2(CO)12. Various techniques are used to characterize the denuded, anchored cluster catalysts; and it is expected that aberration-corrected high-resolution electron microscopy (and other techniques, which are outlined) will be invaluable in such characterization. Density functional theory has provided important insights into the structures and electronic properties of our catalysts and their precursors.
resolution, reforming catalysts, sn catalyst, microscopy, mesoporous silica, platinum, oxidation, carbonyl cluster complexes, dehydrogenation, solvent-free
0301-7249
301-315
Thomas, John Meurig
f1d9bb61-4e2c-4c4b-8115-953d0f3d36bd
Adams, Richard D.
7d7373ac-58af-43f8-9257-8443825f4f69
Boswell, Erin M.
ec393454-f2aa-4c1d-afec-042f7adef2ea
Captain, Burjor
17c6b314-5923-40aa-84ad-368b2f3d0245
Gronbeck, Henrik
92688290-fca5-49dc-9626-366bd6cf6ef4
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Thomas, John Meurig
f1d9bb61-4e2c-4c4b-8115-953d0f3d36bd
Adams, Richard D.
7d7373ac-58af-43f8-9257-8443825f4f69
Boswell, Erin M.
ec393454-f2aa-4c1d-afec-042f7adef2ea
Captain, Burjor
17c6b314-5923-40aa-84ad-368b2f3d0245
Gronbeck, Henrik
92688290-fca5-49dc-9626-366bd6cf6ef4
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b

Thomas, John Meurig, Adams, Richard D., Boswell, Erin M., Captain, Burjor, Gronbeck, Henrik and Raja, Robert (2008) Synthesis, characterization, electronic structure and catalytic performance of bimetallic and trimetallic nanoparticles containing tin. Faraday Discussions, 138 (1), 301-315. (doi:10.1039/b706151j).

Record type: Article

Abstract

When anchored on a high-area, siliceous supports, nanoparticle catalysts, consisting of two or three different metals, but totaling no more than twenty atoms in all, exhibit exceptional activities and selectivities in solvent-free, one-step hydrogenation reactions at low temperatures (<420 K) and much lower pressures (e.g. 30 bar) than those required in current industrial manufacture. The two selective hydrogenations illustrated here are the conversion of (a) cyclododecatriene (CDT) to cyclododecene (CD) and (b) dimethyl terephthalate (DMT) to cyclohexane dimethanol (CHDM); each of these products is extensively used in the polymer industry. All our mixed-metal nanoparticles are derived from an appropriately chosen parent (precursor) mixed-metal carbonyl having phenyl-containing tin ligands, e.g. Ru4(µ4-SnPh)2(CO)12. Various techniques are used to characterize the denuded, anchored cluster catalysts; and it is expected that aberration-corrected high-resolution electron microscopy (and other techniques, which are outlined) will be invaluable in such characterization. Density functional theory has provided important insights into the structures and electronic properties of our catalysts and their precursors.

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More information

Published date: 2008
Keywords: resolution, reforming catalysts, sn catalyst, microscopy, mesoporous silica, platinum, oxidation, carbonyl cluster complexes, dehydrogenation, solvent-free

Identifiers

Local EPrints ID: 54508
URI: http://eprints.soton.ac.uk/id/eprint/54508
ISSN: 0301-7249
PURE UUID: 0b7afd0d-e7b1-4c20-9006-f98c13d8f2ba
ORCID for Robert Raja: ORCID iD orcid.org/0000-0002-4161-7053

Catalogue record

Date deposited: 19 Aug 2008
Last modified: 03 Dec 2019 01:46

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