Patents by Inventor Roland Thome
Roland Thome has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5578195Abstract: Synthetic crystalline aluminosilicate of the pentasil type and method for using the same as catalysts or catalyst components in petrochemical processes for the catalytic conversion of hydrocarbons and their derivatives into useful organic compounds and intermediates.Type: GrantFiled: April 13, 1995Date of Patent: November 26, 1996Assignee: Ecolith - Zeolithe GmbHInventors: Arno Tissler, Roland Thome, Karl Becker, Hans-Dieter Neubauer, Hans-Heino John
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Patent number: 5466432Abstract: The invention relates to a crystalline zeolite-like gallosilicate having an atomic ratio of Si/Ga in the outer crystalline surface that is not larger than the average Si/Ga ratio for the whole of the crystal. The invention also relates to a method of making such a gallosilicate comprising the hydrothermal crystallization of a strictly inorganic reaction mixture having the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05-1.0; and H.sub.2 O/SiO.sub.2 =10-1,000. The invention further relates to the above-described method wherein said reaction mixture is prepared by adding an aged gel to a first mixture, the first mixture preferably having a composition with the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05 to 1.0; and H.sub.2 O/SiO.sub.2 =20 to 100.Type: GrantFiled: August 8, 1994Date of Patent: November 14, 1995Assignees: VAW Aluminium AG, Veba Oel AGInventors: Martin Wallau, Rudolf Spichtinger, Klaus K. Unger, Arno Tissler, Roland Thome
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Patent number: 5413985Abstract: The invention relates to a partially crystalline, transitional aluminum oxide containing 4-fold and 5-fold coordinated aluminum oxide in a ratio of at least 1:2. The invention also relates to a method of making this composition. The composition is particularly useful as starting material for manufacturing highly reactive molded articles. Accordingly, the invention also relates to this manufacturing process.Type: GrantFiled: December 30, 1992Date of Patent: May 9, 1995Assignees: Vereinigte Aluminium-Werke A.G., Leuna-Werke AGInventors: Roland Thome, Hubertus Schmidt, Reinhard Feige, Ulrich Bollmann, Rudiger Lange, Seigfried Engels
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Patent number: 5409687Abstract: Gallosilicates can be formed in the absence of structure-guiding organic hydrocarbons or amines by(a) combining water, a base, a gallium material selected from the group consisting of alkali metal gallates, Ga.sub.2 O.sub.3 and hydrated derivatives of Ga.sub.2 O.sub.3, and gallium salts optionally in aqueous solution, with a powder consisting essentially of particles of silicon dioxide or a hydrated derivative thereof having a diameter of 0.1 to 5 microns and a specific surface area of 20-22 m.sup.2 /g in amounts such that the atomic ratio of silicon to gallium is at least 10 to form an alkaline aqueous reaction mixture; and(b) heating the reaction mixture to produce zeolite-like gallosilicates. These materials are advantageously recovered from the reaction mixture and subjected to ion exchange to replace any alkali metal or alkaline-earth metal ions present with protons.Type: GrantFiled: June 7, 1994Date of Patent: April 25, 1995Assignee: Vereinigte Aluminum-Werke AktiengesellschaftInventors: Martin Wallau, Arno Tissler, Roland Thome, Klaus K. Unger
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Patent number: 5407654Abstract: Synthetic crystalline aluminosilicate of the pentasil type and method for using the same as catalysts or catalyst components in petrochemical processes for the catalytic conversion of hydrocarbons and their derivatives into useful organic compounds and intermediates.Type: GrantFiled: July 8, 1991Date of Patent: April 18, 1995Assignee: Vaw Aluminium AGInventors: Arno Tissler, Roland Thome, Karl Becker, Hans-Dieter Neubauer, Hans-Heino John
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Patent number: 5385714Abstract: Synthetic crystalline aluminosilicate is prepared by an inorganic process from a reaction mixture, which contains, in an aqueous alkaline medium SiO.sub.2 and Al.sub.2 O.sub.3 or their hydrated derivatives or alkali silicates and aluminates, mineralizers and optionally seeding crystals, the reaction mixture containing: SiO.sub.2 /Al.sub.2 O.sub.3 in molar ratio of 15-40, OH.sup.- /SiO.sub.2 in molar ratio 0.1-0.2, and H.sub.2 O/SiO.sub.2 in molar ratio 20-60. The aluminosilicate produced by the process has a chemical composition expressed in molar ratios as: 0-3 M.sub.2 O:Al.sub.2 O.sub.3 :15-40 SiO.sub.2 :0-40 H.sub.2 O, where M represents an alkali cation. The aluminosilicate is useful in the preparation of catalysts and adsorbents.Type: GrantFiled: June 29, 1992Date of Patent: January 31, 1995Assignee: Vereinigte Aluminium-Werke AktiengesellschaftInventors: Roland Thome, Arno Tissler, Hubertus Schmidt, Gunter Winkhaus, Klaus Unger
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Patent number: 5365002Abstract: The invention relates to a crystalline zeolite-like gallosilicate having an atomic ratio of Si/Ga in the outer crystalline surface that is not larger than the average Si/Ga ratio for the whole of the crystal. The invention also relates to a method of making such a gallosilicate comprising the hydrothermal crystallization of a strictly inorganic reaction mixture having the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05-1.0; and H.sub.2 O/SiO.sub.2 =10-1,000. The invention further relates to the above-described method wherein said reaction mixture is prepared by adding an aged gel to a first mixture, the first mixture preferably having a composition with the following molar ratios: SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5; OH.sup.- /SiO.sub.2 =0.05 to 1.0; and H.sub.2 O/SiO.sub.2 =20 to 100.Type: GrantFiled: June 24, 1992Date of Patent: November 15, 1994Assignees: VAW Aluminium AG, Veba OEL AGInventors: Martin Wallau, Rudolf Spichtinger, Klaus K. Unger, Arno Tissler, Roland Thome
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Patent number: 5273737Abstract: Disclosed is a method for preparing crystalline gallosilicates having a molar ratio of SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5 an having a more uniform particle size with enhanced catalytic activity. According to the method of the invention, crystalline gallosilicates are prepared by adding an aged, gallosilicate nuclei-forming gel having a molar ratio of SiO.sub.2 /Ga.sub.2 O.sub.3 .gtoreq.5 to an aqueous, alkaline solution containing reactive silicon and gallium compounds to form a mixture. The mixture is then subjected to hydrothermal crystallization conditions to form the crystalline gallosilicate. The gallosilicates prepared by the disclosed method is useful for the preparation of catalysts and adsorbents and in processes for converting low molecular weight hydrocarbons to higher aliphatics and aromatic compounds.Type: GrantFiled: July 3, 1991Date of Patent: December 28, 1993Assignees: Vaw Aluminum AG, Veba Oel AGInventors: Martin Wallau, Rudolf Spichtinger, Arno Tissler, Klaus K. Unger, Roland Thome
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Patent number: 5178846Abstract: An economical and environmentally safe method for synthesizing wide-pore aluminophosphate crystalline molecular sieves primarily involves inorganic synthesis requiring no structure-directing organic templates. In addition to aluminium and phosphate, further components selected from group IV of the periodic table of elements can be added to synthesize multi-component phosphate molecular sieves such as germano-silico-alumino-phosphate crystalline structures.Type: GrantFiled: July 3, 1991Date of Patent: January 12, 1993Assignee: Vereinigte Aluminium-Werke A.G.Inventors: Martin Buelow, Elke Jahn, Ulrich Schuelke, Karl Becker, Peter Kraak, Roland Thome, Arno Tissler
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Patent number: 5100636Abstract: Disclosed herein is a method of preparing crystalline, zeolitic aluminosilicates with SiO.sub.2 /Al.sub.2 O.sub.3 ratios of 20 or more. The method provides a two-stage crystallization process which avoids the formation of secondary crystalline phases. The first stage is conducted at a temperature between 240.degree. C. and 325.degree. C. for between about 1 and 20 minutes. The second stage is conducted in an open vessel at a temperature between about 50.degree. C. and 100.degree. C. for about 40 to 240 hours.Type: GrantFiled: June 11, 1990Date of Patent: March 31, 1992Assignee: Vereinigte Aluminium-Werke A.G.Inventors: Roland Thome, Arno Tissler
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Patent number: 5100853Abstract: Disclosed is a molded aluminosilicate catalyst, including a zeolite powder and a SiO.sub.2 -containing powder. The SiO.sub.2 -containing powder includes SiO.sub.2 particles of from about 0.1 to about 5 microns in average diameter. The aluminosilicate catalyst includes from about 5 to about 70 percent by weight of the SiO.sub.2 -containing powder.Type: GrantFiled: June 15, 1990Date of Patent: March 31, 1992Assignee: Vereinigte-Aluminium-Werke AGInventors: Roland Thome, Arno Tissler
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Patent number: 5089243Abstract: The present invention relates to a method of preparing crystalline, zeolitic aluminosilicates with SiO.sub.2 /Al.sub.2 O.sub.3 ratios of 20 or more. The method provides a rapid, two-stage crystallization process which avoids the formation of secondary crystalline phases. The first stage is conducted at a temperature between 240.degree. C. and 325.degree. C. for between about 1 and 20 minutes. The second stage is conducted at a temperature between about 120.degree. C. and 225.degree. C. for about 1 to 100 hours.Type: GrantFiled: June 11, 1990Date of Patent: February 18, 1992Assignee: Vereinigte Aluminium-Werke A.G.Inventors: Roland Thome, Hubertus Schmidt, Arno Tissler, Dieter Prescher
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Patent number: 4362701Abstract: A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.Type: GrantFiled: March 27, 1981Date of Patent: December 7, 1982Assignee: Vereinigte Aluminium-Werke AktiengesellschaftInventors: Jorg Kruger, Roland Thome, Dieter Moritz, Hubert Bings, Herbert Losert
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Patent number: 4361541Abstract: A method for continuously extracting uranium from ores comprises the steps of forming a slurry of ore in a leaching solution; heating the slurry while pumping it through a tube reactor at high turbulences characterized by Reynolds numbers in excess of 50,000; supplying gaseous oxygen at high pressures of at least 30 bar into the tube reactor such that the uranium is substantially completely oxidized in a soluble form but impurities in the slurry are substantially kept from becoming soluble; recovering the uranium oxide solute which is substantially free of impurities.Type: GrantFiled: September 4, 1979Date of Patent: November 30, 1982Assignees: Vereinigte Aluminium-Werke Aktiengesellschaft, Metallgesellschaft AktiengesellschaftInventors: Hubert Bings, Fritz Kampf, Roland Thome, Gerhard Wargalla, Gunter Winkhaus, Hartmut Pietsch, Wolfgang Turke, Peter Fischer
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Patent number: 4310501Abstract: A method of recovering fluorine, e.g. as hydrogen fluoride, from wastes of aluminum electrolysis furnaces, chemisorbents, adsorbents or absorbents, etc. in which the fluorine-containing material is subjected to pyrohydrolysis in an expanded fluid bed and the HF-containing gas is subjected to condensation or scrubbing for the removal of the HF therefrom. According to the invention, the exhaust gases from the fluidized bed are cooled by direct contact with solids which can be circulated in a separate cycle and are themselves cooled in a cooler, e.g. by contact with gas which is to be fed to the expanded fluidized bed. The circulated solids thus allow recovery of the sensible heat of the gas without diluting it.Type: GrantFiled: July 9, 1980Date of Patent: January 12, 1982Assignees: Metallgesellschaft A.G., Vereinigte Aluminium Werke A.G.Inventors: Lothar Reh, Hans W. Schmidt, Harald Sauer, Gunter Winkhaus, Roland Thome, Dieter Moritz
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Patent number: 4304755Abstract: Disclosed herein are a process and apparatus for manufacturing vanadium pentoxide in powder form by the thermal decomposition of ammonium metavanadate containing more than 10% NH.sub.3 in a single operation.Type: GrantFiled: June 8, 1978Date of Patent: December 8, 1981Assignee: Vereinigte Aluminium-Werke AktiengesellschaftInventors: Roland Thome, Hubert Bings, Hans Obermaier
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Patent number: 4294816Abstract: A process for extracting hydrogen fluoride from fluorine containing materials includes countercurrently contacting the materials with steam having a plane of rotation relatively perpendicular to the direction of flow of the material. An apparatus for the extraction of hydrogen fluoride from fluorine containing materials includes a rotary kiln having a first zone wherein a steam-air mixture countercurrently contacts the materials in an oxidation step, a second zone wherein an oxygen containing gas is tangentially injected into the kiln to provide complete combustion of carbon containing materials, a third zone wherein a steam stream countercurrently contacts the materials in a reducing step and means for providing a plane of rotation to the steam which is relatively perpendicular to the direction of flow of the material.Type: GrantFiled: October 17, 1980Date of Patent: October 13, 1981Assignee: Vereinigte aluminium-Werke AktiengesellschaftInventors: Jorg Kruger, Roland Thome, Dieter Moritz, Hubert Bings, Herbert Losert
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Patent number: 4119707Abstract: Disclosed herein are a process and apparatus for manufacturing vanadium pentoxide in powder form by the thermal decomposition of ammonium metavanadate containing more than 10% NH.sub.3 in a single operation.Type: GrantFiled: March 7, 1977Date of Patent: October 10, 1978Assignee: Vereinigte Aluminum-Werke AktiengesellschaftInventors: Roland Thome, Hubert Bings, Hans Obermaier