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 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 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 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 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 method for producing hydridosilanes from halosilanes by a) reacting i) at least one halosilane of the generic formula SinX2n+2 (with n≧3 and X═F, Cl, Br and/or I) with ii) at least one catalyst of the generic formula NRR'aR″bYc with a=0 or 1, b=0 or 1, and c=0 or 1, and formula (I), wherein aa) R, R′ and/or R″ are —C1-C12 alkyl, —C1-C12 aryl, —C1-C12 aralkyl, —C1-C12 aminoalkyl, —C1-C12 aminoaryl, —C1-C12 aminoaralkyl, and/or two or three groups R, R′ and R″ (if c=0) together form a cyclic or bicyclic, heteroaliphatic or heteroaromatic system including N, with the proviso that at least one group R, R′ or R″ is unequal —CH3 and/or wherein bb) R and R′ and/or R″' (if c=1) are —C1-C12 alkylene, —C1-C12 arylene, —C1-C12 aralkylene, —C1-C12 heteroalkylene, —C1-C12 heteroarylene, —C1-C12 heteroaralkylene and/or —N═, or cc) (if a=b=c=0) R═≡C-R′″ (with R′″═—C1-C10 alkyl, —C1-C10 aryl and/or —C1-C10 aralkyl), while forming a mixture comprising at least one halosilane of the generic formula SimX2m+2 (with m>n and X═F, Cl, Br and/or I) and SiX4 (with X═F, Cl, Br and/or I), and b) hydrogenating the at least one halosilane of the generic formula SimH2m+2 while forming a hydridosilane of the generic formula SimH2m+2. The invention also relates to the hydridosilanes producible according to said method and to their use.
摘要:
The invention relates to a process for preparing monochlorosilane by reaction of monosilane and dichlorosilane in the presence of a catalyst. In the process of the invention, monochlorosilane is formed by comproportionation of monosilane and dichlorosilane. The invention further relates to the use of the monochlorosilane produced and also a plant for carrying out the process.
摘要:
The invention relates to a method for producing hydridosilanes from halosilanes by a) reacting i) at least one halosilane of the generic formula SinX2n+2 (with n≧3 and X═F, Cl, Br and/or I) with ii) at least one catalyst of the generic formula NRR'aR″bYc with a=0 or 1, b=0 or 1, and c=0 or 1, and formula (I), wherein aa) R, R′ and/or R″ are —C1-C12 alkyl, —C1-C12 aryl, —C1-C12 aralkyl, —C1-C12 aminoalkyl, —C1-C12 aminoaryl, —C1-C12 aminoaralkyl, and/or two or three groups R, R′ and R″ (if c=0) together form a cyclic or bicyclic, heteroaliphatic or heteroaromatic system including N, with the proviso that at least one group R, R′ or R″ is unequal —CH3 and/or wherein bb) R and R′ and/or R″' (if c=1) are —C1-C12 alkylene, —C1-C12 arylene, —C1-C12 aralkylene, —C1-C12 heteroalkylene, —C1-C12 heteroarylene, —C1-C12 heteroaralkylene and/or —N═, or cc) (if a=b=c=0) R═≡C-R′″ (with R′″═—C1-C10 alkyl, —C1-C10 aryl and/or —C1-C10 aralkyl), while forming a mixture comprising at least one halosilane of the generic formula SimX2m+2 (with m>n and X═F, Cl, Br and/or I) and SiX4 (with X═F, Cl, Br and/or I), and b) hydrogenating the at least one halosilane of the generic formula SimH2m+2 while forming a hydridosilane of the generic formula SimH2m+2. The invention also relates to the hydridosilanes producible according to said method and to their use
摘要:
The invention relates to a process for treating a composition containing silicon compounds, especially organosilanes and/or inorganic silanes, and at least one extraneous metal and/or a compound containing extraneous metal, wherein the composition is contacted with at least one adsorbent and/or a first filter and then a composition in which the content of the extraneous metal and/or of the compound containing extraneous metal has been reduced is obtained. The invention further relates to the use of organic resins, activated carbon, silicates and/or zeolites and/or else of at least one filter with small pore sizes to reduce the level of the compounds mentioned.
摘要:
The invention relates to a process for dismutating at least one halosilane and reducing the content of extraneous metal and/or a compound containing extraneous metal in the at least one halosilane and in the at least one silane obtained, by contacting at least one halosilane of the general formula I, HnSiClm (I), where n and m are integers and n=1, 2 or 3 and m=1, 2 or 3 and n+m=4, with a particulate, organic, amino-functional resin to obtain at least one silane of the general formula II, HaSiClb (II), where a and b are integers and a=0, 2, 3 or 4 and b=0, 1, 2 or 4 where a+b=4, in one step, in which the content of extraneous metal and/or compounds containing extraneous metal has been reduced compared to the halosilane of the formula I. The invention further provides for the use of this resin for dismutating halosilanes and as an absorbent of extraneous metals or compounds containing extraneous metal in a process for preparing monosilane.