Abstract:
Production of anthraquinone by catalytic oxidation of indans with oxygen in the presence of a vanadium (V) compound with one or more than one compound of thallium and antimony. Anthraquinone which can be prepared by the process according to this invention is a valuable starting material for the production of dyes and pesticides.
Abstract:
Production of anthraquinone by catalytic oxidation of indans with oxygen. Anthraquinone obtainable by the process is a starting material for the production of dyes and pesticides.
Abstract:
A PROCESS FOR THE PRODUCTION OF STYRENE BY CATALYTIC DEHYDROGENATION OF ETHYLBENZENE WITH OXYGEN OF A GAS CONTAINING MOLECULAR OXYGEN IN THE PRESENCE OF STEAM IN A FLUIDIZED BED AT A TEMPERATURE OF FROM 350* TO 600*C. USING A SOLID CATALYST AND REGENERATING THE CATALYST BY BURNING OFF THE CARBONACEOUS DEPOSITS, WHICH COMPRISES CARRYING OUT THE REGENERATION OF THE CATALYST, WITH INCOMPLETE BURNING OFF OF THE CARBONACEOUS DEPOSITS WITH OXYGEN OR A GAS CONTAINING MOLECULAR OXYGEN, ONLY TO SUCH AN EXTENT THAT ON AN AVERAGE THE CATALYST CONTAINS DURING THE REACTION FROM 1 TO 30% BY WEIGHT OF THESE CARBONACEOUS DEPOSITS WITH REFERENCE TO THE CATALYST. STYRENE IS A VALUABLE MONOMER FOR THE PRODUCTION OF PLASTICS.
Abstract:
Separation of anthraquinone from a mixture of its vapor with a carrier gas by treating the hot gas-vapor mixture with an aqueous suspension of anthraquinone. The anthraquinone produced according to the process of the invention is a valuable intermediate for the production of dyes and pesticides.
Abstract:
On the separation of acrylic acid from reaction gases from the oxidation of propylene or acrolein a countercurrent absorption is carried out with at least 8 parts by weight of carboxylic ester per part by weight of acrylic acid contained in the reaction gas, the dissolved acetic acid and the dissolved water are substantially completely expelled from the resulting absorption solution at elevated temperature by means of inert gases, the loaded inert gases are passed to the countercurrent absorption for the recovery of the acrylic acid contained therein, and the acrylic acid is distilled off under reduced pressure from the carboxylic ester solution which is free from acetic acid and water.
Abstract:
PRODUCTION OF HEPTENES BY REACTION OF PROPENE WITH AT LEAST ONE BUTENE IN THE PRESENCE OF STEAM AND A CALCINED PHOSPHORIC ACID/SILICA GEL CATALYST, USIG A CATALYST WHICH CONTAIN FORM 10 TO 50% BY WEIGHT OF PHOSPHORIC ACID AND TREATING THIS CATALYST WTH WTATR IN THE LIQUID PHASE BEFORE AND/OR DURING THE REACTION. THE HEPTENE PRODUCTS OF THE PROCESS ARE VALUABLE STARTIG MATERIALS FOR THE PRODUCTION OF PLASTICIZERS, SYNTHETIC RESINS AND RAW MATERIALS FOR SURFACE COATINGS.