High efficiency epoxidation process

Details High efficiency epoxidation process High efficiency epoxidation process

1997-07-01

1999-06-15

Trinh, Ba K.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549531, C07D30112, C07D30119

Patent

active

059123672

ABSTRACT:
Propylene is converted to propylene oxide in a highly efficient liquid phase process wherein temperature and pressure are both increased over the course of the epoxidation, which is preferably conducted in a continuous mode of operation. The catalyst used is a heterogeneous catalyst such as titanium silicalite or titania-on-silica. The oxidizing agent is an active oxygen species such as hydrogen peroxide or an organic hydroperoxide. When the desired yield of propylene oxide can no longer be maintained, the catalyst is replaced or regenerated. Regeneration by washing the catalyst with a hot solvent containing a source of ammonium or alkali metal cations is highly

REFERENCES:
patent: 4367342 (1983-01-01), Wulff et al.
patent: 4833260 (1989-05-01), Neri et al.

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