Olefin epoxidation catalysts

Details Olefin epoxidation catalysts Olefin epoxidation catalysts

1999-10-04

2000-09-05

Owens, Amelia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

502 60, C07D30500

Patent

active

061145513

ABSTRACT:
A method of synthesizing an olefin epoxidation catalyst comprises the step of treating a porous crystalline aluminosilicate material having an X-ray diffraction pattern including d-spacing maxima at 12.4.+-.0.25, 6.9.+-.0.15, 3.57.+-.0.07 and 3.42.+-.0.07 Angstrom, such as MCM-22, with a dealuminating agent under conditions effective to remove framework aluminium from the material and produce a dealuminated product. The dealuminated product is then treated with a titanium-containing material under conditions effective to insert titanium into the dealuminated product and produce a titanium-containing, dealuminated catalyst composition.
The resultant catalyst is useful in the epoxidation of olefins, such as propylene and cyclohexene, with hydrogen peroxide and organic hydroperoxides.

REFERENCES:
patent: 4883260 (1989-11-01), Neri et al.
patent: 5374747 (1994-12-01), Saxton et al.
patent: 5621122 (1997-04-01), Saxton et al.
X.Gao, I.E. Wachs, "Titania-Silica as Catalyst: Molecular Structural Characteristics and Physico-Chemical Properties," Catal. Today, 1999, 51, 233-254.

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