Octene hydroformylation by using rhodium complexes tethered onto selectively functionalized mesoporous silica and in situ high pressure IR study

SBA-15-based heterogeneous catalysts were applied to 1-octene hydroformylation. The turn over frequency over SBA-15/γ-aminopropylmethyldimethoxysilane (AEAPMDMS)/Rh catalyst with triphenylphosphine (TPP) ligand prepared by conventional post grafting method was higher than that of the homogeneous cat...

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Bibliographic Details
Published in:Catalysis today 2011-04, Vol.164 (1), p.561-565
Main Authors: Song, Ki-Chang, Baek, Ji Yeon, Bae, Jung A, Yim, Jin-Heong, Ko, Young Soo, Kim, Do Heui, Park, Young-Kwon, Jeon, Jong-Ki
Format: Article
Language:English
Subjects:
ALDEHYDES
CARBONYLATION
Catalysis
CATALYSTS
catalytic activity
Chemistry
Colloidal state and disperse state
Exact sciences and technology
FT-IR
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
General and physical chemistry
Heterogeneous rhodium catalyst
Octene hydroformylation
OCTENES
Porous materials
RHODIUM
RHODIUM COMPLEXES
SBA-15
SILICA
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:SBA-15-based heterogeneous catalysts were applied to 1-octene hydroformylation. The turn over frequency over SBA-15/γ-aminopropylmethyldimethoxysilane (AEAPMDMS)/Rh catalyst with triphenylphosphine (TPP) ligand prepared by conventional post grafting method was higher than that of the homogeneous catalyst, (Rh(CH 3COO) 2) 2 with TPP. The SBA-15/AEAPMDMS/Rh catalyst can be easily recycled without rhodium loss. The molar ratio of linear to branched nonyl aldehydes was remarkably enhanced over the heterogeneous catalysts. The selectively functionalized rhodium catalyst (SBA-15/Ph 2Si(OEt) 2/AEAPMDMS/Rh), in which rhodium was selectively tethered intra-pore of SBA-15, was beneficial for improving the selectivity to linear aldehyde. In situ high pressure FT-IR analysis suggested HRh(CO) 2(PPh 3) 2 and HRh(CO)(PPh 3) 3 to be active species over the SBA-15/AEAPMDMS/Rh catalyst with TPP.
ISSN:0920-5861
1873-4308
DOI:10.1016/j.cattod.2010.10.065