Catalyst system comprising a first catalyst system tethered to a

Details Catalyst system comprising a first catalyst system tethered to a Catalyst system comprising a first catalyst system tethered to a

1997-03-05

1998-08-04

Yildirim, Bekir L.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502102, 502103, 502104, 502114, 502150, 502153, 502154, 502155, 502158, 502161, 502162, 502166, 502167, 502232, 502240, 502245, 502254, 502258, 502259, 502261, 502263, 502439, B01J 3100, B01J 3116, B01J 3128

Patent

active

057893330

ABSTRACT:
The present invention provides new catalyst formats which comprise a supported catalyst tethered to a second and different catalyst by a suitable tethering ligand. A preferred system comprises a heterogeneous supported metal catalyst tethered to a homogeneous catalyst. This combination of homogeneous and heterogeneous catalysts has a sufficient lifetime and unusually high catalytic activity in arene hydrogenations, and potentially many other reactions as well, including, but not limited to hydroformylation, hydrosilation, olefin oxidation, isomerization, hydrocyanation, olefin metathesis, olefin polymerization, carbonylation, enantioselective catalysis and photoduplication. These catalysts are easily separated from the products, and can be reused repeatedly, making these systems very economical.

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