Basf Aktiengesellschaft

Basf Se Corporation

Dow Global Technolgoies LLC

Luise Spiske

Joaquim Henrique Teles

Ulrich Mueller

Ulrich Müller

Andrei-Nicolae Parvulescu

Dominic Riedel

Ulrike Wegerle

Daniel Urbanczyk

Meinolf Weidenbach

Werner J Witzl

Alexander Schroeder

Hermann P&uuml;tter

Werner Hefner

Dieter Schl&auml;fer

G&uuml;nther Huber

Gerhard Pforr

Hans Stark

Gerd Kaibel

Andreas Kramer

Thomas Krug

Hagen Jaedicke

Manfred Stroezel

Udo Rheude

Carsten Oost

Heinz Etzrodt

Markus Frede

Dietmar Weller

Andreas Weiper-Idelmann

Christof Herion

Guido Ellinghorst

Hermann A Steinhauser

Harald Meissner

Andreas Huebner

Klaus Kuessner

Dietrich Luetzow

Volker Steuer

Karl-Heinz Schehlmann

Rolf Golombek

Gunther Huber

Alexander SCHRÖDER

The invention relates to process for the regeneration of a catalyst comprising a titanium containing zeolite as catalytically active material comprising a stage comprising introducing a feed stream comprising propene, hydrogen peroxide or a hydrogen peroxide source, and an organic solvent into a reactor containing a catalyst comprising the titanium containing zeolite, subjecting the feed stream in the reactor to epoxidation conditions in the presence of the catalyst, removing a product steam comprising propylene oxide and the organic solvent from the reactor, stopping introducing the feed stream, washing the catalyst with a liquid aqueous system and calcining the washed catalyst.

Process for the regeneration of a titanium zeolite catalyst for propylene epoxidation

A catalytic system containing a titanium zeolite of structure type MWW optionally containing zinc and containing at least one of an inorganic potassium salt and an organic potassium salt is provided. The catalyst system is useful in the preparation of propylene oxide.

Catalyst system for preparing propylene oxide

A continuous process for the preparation of propylene oxide, comprising (i) providing a liquid feed stream comprising propene, hydrogen peroxide, acetonitrile, water, optionally propane, and at least one dissolved potassium salt; (ii) passing the feed stream provided in (i) into an epoxidation reactor comprising a catalyst comprising a titanium zeolite of structure type MWW, and subjecting the feed stream to epoxidation reaction conditions in the epoxidation reactor, obtaining a reaction mixture comprising propylene oxide, acetonitrile, water, the at least one potassium salt, optionally propene, and optionally pane; (iii) removing an effluent stream from the epoxidation reactor, the effluent stream comprising propylene oxide, acetonitrile, water, at least a portion of the at least one potassium salt, optionally propene, and optionally propane.

Process for preparing propylene oxide

A process for preparing sodium and aluminum chloride electrochemically is described in which, in an electrolytic cell containing aluminum as an anode and sodium as a cathode which are separated from one another by a sodium ion-conducting solid electrolyte, a fused electrolyte essentially containing sodium tetrachloroaluminate is electrolyzed in the anode compartment, aluminum chloride formed in this process is evaporated from the electrolytic cell and sodium is removed from the cathode compartment.

Electrolytic cell

Process for preparing higher unsaturated ketones

Electrolytic method for the production of sodium and aluminum chloride

A process for the electrochemical reduction of an organic compound by bringing the organic compound into contact with a cathode, wherein the cathode comprises a support made of an electrically conductive material and an electrically conductive, cathodically polarized layer formed thereon in situ by alluviation.

Electrochemical reduction of organic compounds

In a process for removing water by pervaporation or vapor permeation from mixtures with alcohols and/or carboxylic acids and/or carboxylic esters by bringing the mixture into contact with one side of a membrane and removing the water-containing permeate in vapor form from the other side of the membrane, the membrane used has been obtained by plasma polymerization.

Removal of water from mixtures with alcohols and/or carboxylic acids

Water is removed from a mixture containing water, CO.sub.2 and one or more amines by pervaporation by bringing the mixture into contact with one side of a membrane and removing the water-containing permeate as a vapor from the other side of the membrane.

Removal of water from a mixture of water, CO.sub.2 and amines

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Seeheim-Jugenheim, Germany

Luise Spiske