US 6,982,235 B2 | ||
Method for regenerating solid catalyst | ||
Junpei Tsuji, Ichihara (Japan); and Toshikazu Ohmae, Kisarazu (Japan) | ||
Assigned to Sumitomo Chemical Company, Limited, Osaka (Japan) | ||
Appl. No. 10/471,421 PCT Filed Mar. 07, 2002, PCT No. PCT/JP02/02102 § 371(c)(1), (2), (4) Date Sep. 11, 2003, PCT Pub. No. WO02/072255, PCT Pub. Date Sep. 19, 2002. |
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Claims priority of application No. 2001-71781 (JP), filed on Mar. 14, 2001. | ||
Prior Publication US 2004/0082800 A1, Apr. 29, 2004 | ||
Int. Cl. B01J 20/34 (2006.01); B01J 38/56 (2006.01) |
U.S. Cl. 502—31 | 4 Claims |
1. A process for regenerating a solid catalyst which has been used for producing propylene oxide through an epoxidation reaction of propylene with an organic peroxide in a reactor packed with the solid catalyst, which comprises allowing a liquid propylene to flow through the catalyst packed in the reactor at a temperature higher by 5° C. or more than the maximum reaction temperature of the epoxidation reaction. |