摘要:
The invention relates to a method for indirectly determining the purity of silanes and germanes using a device for measuring specific resistance. The invention further relates to a system for industrially producing and/or filling containers with silanes or germanes, including a quality control in which a device is used for measuring specific resistance.
摘要:
The invention provides a method for the processing of finely divided solids during the production of chlorosilanes, which is characterized in that the finely divided solids are hydraulically pressed to give bodies of increased density. Moreover, also provided is the compact obtained by the process according to the invention which is characterized by a filling factor of the finely divided solids to be hydraulically pressed of 3.9 to 4.5.
摘要:
The invention relates to a process for preparing monomeric and/or dimeric halogen- and/or hydrogen-containing silicon compounds from oligomeric inorganic silanes having three or more directly covalently interconnected silicon atoms substituted by substituents selected from halogen, hydrogen and/or oxygen by reacting the oligomeric silane over a nitrogen-containing catalyst in the presence of hydrogen halide.
摘要:
The invention relates to an empty container (1) for accommodating high-purity and ultra-high-purity, air- and/or moisture-sensitive liquid or condensable compounds, comprising a cylindrical jacket (3), a bottom (4a) and an upper end piece (4b, 4b′) at the two ends of the cylindrical jacket, an associated connection unit (2) including shut-off/multiple-way and rinsing system (5), and an associated immersion pipe (7), characterized in that the lower end of the immersion pipe (7a) protrudes into a recess (4c) (depression), which is introduced in the bottom (4a) and which is the lowest point of the bottom, and/or the lower end of the immersion pipe (7a) is tapered and is brought close to the lowest point of the bottom (4a) to within less than 2 mm by means of the tip of the tapered immersion pipe (7b) or touches the lowest point of the bottom with the tip of the tapered immersion pipe (7b). The invention further relates to the use of empty containers according to the invention for storing, handling, and/or transporting such high-purity and ultra-high-purity compounds.
摘要:
The invention relates to a method for producing dimeric and/or trimeric silicon compounds, in particular silicon halogen compounds. The claimed method is also suitable for producing corresponding germanium compounds. The invention also relates to a device for carrying out said method to the use of the produced silicon compounds.
摘要:
The invention relates to a process and an apparatus for preparation of polychlorosilanes from monomeric chlorosilanes, by subjecting the chlorosilanes to a thermal plasma.
摘要:
The invention relates to an empty container (1) for receiving air- and/or moisture-sensitive compounds, comprising a connecting unit (2) and an inner volume of at least 300 liters and adapters for connecting the empty container, and to the use thereof.
摘要:
The invention relates to a complete method for producing pure silicon that is suitable for use as solar-grade silicon, comprising the reduction of a silicon oxide, purified by acidic precipitation from an aqueous solution of a silicon oxide dissolved in an aqueous phase, using one or more pure carbon sources, the purified silicon oxide being obtained, in particular, by the precipitation of a silicon oxide dissolved in an aqueous phase in an acidifier. The invention also relates to a formulation containing an activator and to a device for producing silicon, a reactor and electrodes.
摘要:
The present invention relates to methods for the technical pyrolysis of a carbohydrate or carbohydrate mixture at an elevated temperature while adding silicon oxide, to a pyrolysis product obtainable in this way, and to the use thereof as a reducing agent for the production of solar silicon from silicic acid and carbon at a high temperature.
摘要:
The invention relates to a catalyst, the use thereof, and a method for dismutation of halosilanes containing hydrogen, in particular chlorosilanes containing hydrogen.