Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality!

Handle URI:
http://hdl.handle.net/10754/622467
Title:
Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality!
Authors:
Werghi, Baraa; Bendjeriou-Sedjerari, Anissa; Jedidi, Abdesslem ( 0000-0003-4070-3299 ) ; Abou-Hamad, Edy; Cavallo, Luigi ( 0000-0002-1398-338X ) ; Basset, Jean-Marie ( 0000-0003-3166-8882 )
Abstract:
The reaction of mesoporous silica (SBA15) dehydroxylated at 700 °C with diisobutylaluminum hydride, i-Bu2AlH, gives after thermal treatment a single-site tetrahedral aluminum hydride with high selectivity. The starting aluminum isobutyl and the final aluminum hydride have been fully characterized by FT-IR, advanced SS NMR spectroscopy (1H, 13C, multiple quanta (MQ) 2D 1H-1H, and 27Al), and elemental analysis, while DFT calculations provide a rationalization of the occurring reactivity. Trimeric i-Bu2AlH reacts selectively with surface silanols without affecting the siloxane bridges. Its analogous hydride catalyzes ethylene polymerization. Indeed, catalytic tests show that this single aluminum hydride site is active in the production of a high-density polyethylene (HDPE). © 2016 American Chemical Society.
KAUST Department:
KAUST Catalysis Center (KCC)
Citation:
Werghi B, Bendjeriou-Sedjerari A, Jedidi A, Abou-Hamad E, Cavallo L, et al. (2016) Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality! Organometallics 35: 3288–3294. Available: http://dx.doi.org/10.1021/acs.organomet.6b00454.
Publisher:
American Chemical Society (ACS)
Journal:
Organometallics
Issue Date:
26-Sep-2016
DOI:
10.1021/acs.organomet.6b00454
Type:
Article
ISSN:
0276-7333; 1520-6041
Sponsors:
The research reported in this publication was supported by funding from the King Abdullah University of Science and Technology (KAUST). The authors are grateful to the KAUST Supercomputing Laboratory (KSL) for the resources provided under the project k1087.
Additional Links:
http://pubs.acs.org/doi/abs/10.1021/acs.organomet.6b00454
Appears in Collections:
Articles; KAUST Catalysis Center (KCC)

Full metadata record

DC FieldValue Language
dc.contributor.authorWerghi, Baraaen
dc.contributor.authorBendjeriou-Sedjerari, Anissaen
dc.contributor.authorJedidi, Abdesslemen
dc.contributor.authorAbou-Hamad, Edyen
dc.contributor.authorCavallo, Luigien
dc.contributor.authorBasset, Jean-Marieen
dc.date.accessioned2017-01-02T09:28:33Z-
dc.date.available2017-01-02T09:28:33Z-
dc.date.issued2016-09-26en
dc.identifier.citationWerghi B, Bendjeriou-Sedjerari A, Jedidi A, Abou-Hamad E, Cavallo L, et al. (2016) Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality! Organometallics 35: 3288–3294. Available: http://dx.doi.org/10.1021/acs.organomet.6b00454.en
dc.identifier.issn0276-7333en
dc.identifier.issn1520-6041en
dc.identifier.doi10.1021/acs.organomet.6b00454en
dc.identifier.urihttp://hdl.handle.net/10754/622467-
dc.description.abstractThe reaction of mesoporous silica (SBA15) dehydroxylated at 700 °C with diisobutylaluminum hydride, i-Bu2AlH, gives after thermal treatment a single-site tetrahedral aluminum hydride with high selectivity. The starting aluminum isobutyl and the final aluminum hydride have been fully characterized by FT-IR, advanced SS NMR spectroscopy (1H, 13C, multiple quanta (MQ) 2D 1H-1H, and 27Al), and elemental analysis, while DFT calculations provide a rationalization of the occurring reactivity. Trimeric i-Bu2AlH reacts selectively with surface silanols without affecting the siloxane bridges. Its analogous hydride catalyzes ethylene polymerization. Indeed, catalytic tests show that this single aluminum hydride site is active in the production of a high-density polyethylene (HDPE). © 2016 American Chemical Society.en
dc.description.sponsorshipThe research reported in this publication was supported by funding from the King Abdullah University of Science and Technology (KAUST). The authors are grateful to the KAUST Supercomputing Laboratory (KSL) for the resources provided under the project k1087.en
dc.publisherAmerican Chemical Society (ACS)en
dc.relation.urlhttp://pubs.acs.org/doi/abs/10.1021/acs.organomet.6b00454en
dc.titleSingle-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality!en
dc.typeArticleen
dc.contributor.departmentKAUST Catalysis Center (KCC)en
dc.identifier.journalOrganometallicsen
kaust.authorWerghi, Baraaen
kaust.authorBendjeriou-Sedjerari, Anissaen
kaust.authorJedidi, Abdesslemen
kaust.authorAbou-Hamad, Edyen
kaust.authorCavallo, Luigien
kaust.authorBasset, Jean-Marieen
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