Regenerating a titanium silicalite catalyst
AssigneeDow Global Technologies LLC
InventorsHannah L. Crampton, Philip J. Carlberg, Cesar E. Meza
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Abstract
A process for regenerating a titanium silicalite catalyst by contacting the fouled titanium silicalite catalyst with a regeneration solution that includes at least one oxidizing agent.
Claims19
A process for regenerating a titanium silicalite catalyst fouled during a reaction between an olefin and a peroxide compound to produce an oxirane, the process comprising contacting the fouled titanium silicalite catalyst with a regeneration solution including at least one oxidizing agent to provide a regenerated titanium silicalite catalyst, wherein the regeneration solution has a pH of less than 2 and an oxidizing agent concentration of less than 0.50 weight percent based on a total weight of the regeneration solution prior to contact with the fouled titanium silicalite catalyst, exclusive of the titanium silicalite catalyst.
A process for regenerating a titanium silicalite catalyst fouled during a reaction between an olefin and a peroxide compound to produce an oxirane, the process comprising the step of contacting the fouled titanium silicalite catalyst with a regeneration solution having a pH of less than 2 and comprising at least one oxidizing agent and further comprising an organic compound to provide the regenerated titanium silicalite catalyst, with the proviso that the process does not comprise a washing step in addition to the contacting step.
Dependencies are inferred from the claim text.