TY - JOUR
T1 - Single-Site Tetracoordinated Aluminum Hydride Supported on Mesoporous Silica. From Dream to Reality!
AU - Werghi, Baraa
AU - Bendjeriou-Sedjerari, Anissa
AU - Jedidi, Abdesslem
AU - Abou-Hamad, Edy
AU - Cavallo, Luigi
AU - Basset, Jean-Marie
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: 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.
PY - 2016/9/26
Y1 - 2016/9/26
N2 - 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.
AB - 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.
UR - http://hdl.handle.net/10754/622467
UR - http://pubs.acs.org/doi/abs/10.1021/acs.organomet.6b00454
UR - http://www.scopus.com/inward/record.url?scp=84991241894&partnerID=8YFLogxK
U2 - 10.1021/acs.organomet.6b00454
DO - 10.1021/acs.organomet.6b00454
M3 - Article
SN - 0276-7333
VL - 35
SP - 3288
EP - 3294
JO - Organometallics
JF - Organometallics
IS - 19
ER -