Elastic bushing having fluid chamber filled with highly viscous fluid
Epoxidation process and catalyst therefore
Epoxidation process Patent #: 5621122
ApplicationNo. 412773 filed on 10/04/1999
US Classes:549/510, The hetero ring is four-membered502/60ZEOLITE OR CLAY, INCLUDING GALLIUM ANALOGS
ExaminersPrimary: Owens, Amelia
International ClassC07D 305/00
AbstractA 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 12.4b1;0.25, 6.9b1;0.15, 3.57b1;0.07 and 3.42b1;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.