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Immobilization of rhodium complexes ligated with triphenyphosphine analogs on amino-functionalized MCM-41 and MCM-48 for 1-hexene hydroformylation by Qingrong Peng; Yong Yang; Youzhu Yuan is a Chemistry article available to read on EtoBox.

What is Immobilization of rhodium complexes ligated with triphenyphosphine analogs on amino-functionalized MCM-41 and MCM-48 for 1-hexene hydroformylation about?

Two triphenylphosphine analogs, (4-tert-butylphenyl)diphenylphosphine (1) and bis-(4-tert-butylphenyl)phenylphosphine (2), have been synthesized for the preparation of Rh-P complexes with a formula of Rh(CO)Cl(L) 2 (L stands for the ligands 1 and 2, respectively). Such Rh-P complexes were then attached to amino-group functionalized MCM-41 and MCM-48 for the hydroformylation of 1-hexene in the liquid phase. The supports and the heterogeneous catalysts were characterized by means of XRD, nitrogen adsorption-desorption, FT-IR, HRTEM and AAS. The heterogenized catalysts showed catalytic activity and normal heptanal selectivity comparable to the corresponding homogeneous ones; the advantage in the product selectivity towards the normal heptanal due to the larger cone angle of the ligands over Rh-PPh 3 in the homogeneous systems was also observed in the heterogeneous ones. Considerable interactions occurred between the surface amino-groups and the active rhodium species during the immobilization, resulting in highly dispersed active Rh-moieties and a significant modification in the catalytic stability.

Who reads Immobilization of rhodium complexes ligated with triphenyphosphine analogs on amino-functionalized MCM-41 and MCM-48 for 1-hexene hydroformylation?

Author

Qingrong Peng; Yong Yang; Youzhu Yuan

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 1381-1169)

Published

2004

Language

EN

Field

Chemistry (Physical Sciences)