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US 6,958,304 B2Granted
Method for regenerating a zeolite catalyst
AssigneeBASF SE
InventorsJoaquim Henrique Teles, Alwin Rehfinger, Peter Bassler, Anne Wenzel, Norbert Rieber, Ulrich Müller, Peter Rudolf
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Abstract
A process for the regeneration of a zeolite catalyst which comprises treating the catalyst thermally in the presence of a gas stream at temperatures above 120° C., the weight-based residence time of the gas stream over the catalyst during the thermal treatment being greater than 2 hours.
Claims13
A process for the regeneration of a zeolite catalyst, comprising:
- treating the catalyst thermally in a fixed-bed reactor in the presence of a gas stream at temperatures above 120° C., wherein the weight-based residence time of the gas stream over the catalyst during the thermal treatment is from 4 to 6 hours,
- wherein the fixed-bed reactor is a tubular reactor or a tube-bundle reactor.
A process for the regeneration of a zeolite catalyst, comprising:
- treating the catalyst thermally in a fixed-bed reactor in the presence of a gas stream at temperatures above 120° C., wherein the weight-based residence time of the gas stream over the catalyst during the thermal treatment is from 3 to 10 hours.
An integrated process for the oxidation of an alkene, comprising:
- reacting the alkene with a hydroperoxide in the presence of a zeolite catalyst and subsequently
- treating the catalyst thermally in a fixed-bed reactor in the presence of a gas stream at temperatures above 120° C., wherein the weight-based residence time of the gas stream over the catalyst during the thermal treatment is from 4 to 6 hours, to regenerate the catalyst,
- wherein the fixed-bed reactor is a tubular reactor or a tube-bundle reactor.
Dependencies are inferred from the claim text.