Patent application number | Description | Published |
20080207964 | Compositions containing chromium, oxygen and gold, their preparation, and their use as catalysts and catalyst precursors - A catalyst composition is disclosed that includes chromium, oxygen, and gold as essential constituent elements. The amount of gold in the composition is from about 0.05 atom % to about 10 atom % based on the total amount of chromium and gold. Also disclosed is a process for changing the fluorine distribution (i.e., content and/or arrangement) in a hydrocarbon or halogenated hydrocarbon in the presence of the catalyst composition; and methods for preparing said catalyst composition. One preparation method involves; (a) co-precipitating a solid by adding ammonium hydroxide (aqueous ammonia) to an aqueous solution of a soluble gold salt and a soluble chromium salt that contains at least three moles of nitrate per mole of chromium in the solution and has a gold content of from about 0.05 atom % to about 10 atom % of the total content of gold and chromium in the solution to form an aqueous mixture containing co-precipitated solid; (b) drying the co-precipitated solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume. Another preparation method involves (a) impregnating solid chromium oxide with a solution of a soluble gold salt, (b) drying the impregnated chromium oxide prepared in (a); and optionally, (c) calcining the dried solid. A third preparation method involves (a) evaporating an aqueous solution of chromium(VI) oxide and a soluble gold salt to form a solid; (b) drying the solid formed in (a); and (c) calcining the dried solid formed in (b) in an atmosphere containing at least 10% oxygen by volume. | 08-28-2008 |
20090043138 | Process for the Preparation of 1,3,3,3-Tetrafluoropropene and/or 1,1,3,3,3-Pentafluoropropene - A process for the manufacture of CF | 02-12-2009 |
20090118554 | Process for the preparation of 1,3,3,3-tetrafluoropropene and/or 2,3,3,3-tetrafluoropropene - A process for the manufacture of CF | 05-07-2009 |
20090124836 | Process For The Preparation Of 1,1,1,3,3- Pentafluoropropane And 1,1,1,2,3- Pentafluoropropane - A process is disclosed for the manufacture of CF | 05-14-2009 |
20090137853 | Process for the Preparation of 1,1,1,3,3-Penta-Fluoropropane and/or 1,1,1,3,3,3-Hexafluoropropane - A process for the manufacture of CF | 05-28-2009 |
20100072430 | Compositions of carbon nanosheets and process to make the same - This invention relates to free-flowing compositions of carbon nanosheets and core-shell particles, and to a plasma-torch process for making them. | 03-25-2010 |
20100152503 | Copper-Substituted Chromium Oxide Compositions, Their Preparation, and Their Use as Catalysts and Catalyst Precursors - A crystalline alpha-chromium oxide where from about 0.05 atom % to about 5 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by divalent copper (Cu | 06-17-2010 |
20110098409 | COMPOSITIONS AND ARTICLES FOR HIGH-TEMPERATURE WEAR USE - Disclosed herein are compositions and articles that are useful in environments exposed to heat, wear, and oxidizing agents, which are improved by means of specific kinds of carbon filaments. The compositions and articles comprise high-temperature polymer, high-temperature filler, and a mixture of carbon filament, wherein said mixture of carbon filament comprises multiwall axial carbon filament. | 04-28-2011 |
20110105808 | Process for the Preparation of 1,1,3,3,3-Pentafluoropropene and 1,2,3,3,3-Pentafluoropropene - A process for the manufacture of CF | 05-05-2011 |
20110118514 | Process for the Preparation of 1,1,1,3,3,3-Hexafluoro-Propane and at Least One Of 1,1,1,2,3,3-Hexafluoropropane, Hexafluoropropane and 1,1,1,2,3,3,3-Heptafluoropropane - A process is disclosed for the manufacture of 1,1,1,3,3,3-hexafluoropropane and 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and/or 1,1,1,2,3,3,3-heptafluoropropane. The process involves (a) reacting HF, Cl | 05-19-2011 |
20120128565 | BORON CARBON NANORODS - Described are boron carbide nanorods that have a molar ratio of 8:1 boron to carbon. | 05-24-2012 |
20120235071 | POLYIMIDE RESINS FOR HIGH TEMPERATURE WEAR APPLICATIONS - Polyimide resin compositions that contain an end-capped rigid aromatic polyimide, graphite and carbon filaments are found to exhibit low wear at high temperatures. Such compositions are especially useful in molded articles that are exposed to wear conditions at high temperatures such as aircraft engine parts. | 09-20-2012 |