Abstract: A method for the production of lithium oxide and the use of such lithium oxide is described herein. The method includes reacting lithium carbonate with elemental carbon or a carbon source forming elemental carbon under certain reaction conditions. The reaction may be carried out in containers whose product-contacting surfaces are corrosion resistant to the reactants and products. The lithium oxide obtained according to the method described herein can used for the production of pure lithium hydroxide solutions or for the production of glasses glass ceramics or crystalline ceramics, for example, lithium ion conductive ceramics.

Abstract: The disclosed subject matter relates to a method for obtaining cesium from aqueous solutions.

Abstract: The invention relates to a method for obtaining caesium from aqueous starting solutions having caesium contents in the range of 50 ppm to 5000 ppm, in which method the caesium ions in the aqueous solution are, in a first step, precipitated as a double salt having divalent cations with the aid of an at least 1.1-times overstoichiometric amount of solutions containing prussiate of potash, in a pH range of 2 to 12 and a temperature range of 10 to 80° C., the divalent cations either already being present in the starting solutions in an amount at least equimolar to the caesium content or being added as a water-soluble salt, and, in a second step, converted back into a water-soluble form by thermal decomposition and, in a third step, separated from the insoluble residues.

Abstract: A method for the production of lithium oxide and the use of such lithium oxide is described herein. The method includes reacting lithium carbonate with elemental carbon or a carbon source forming elemental carbon under certain reaction conditions. The reaction may be carried out in containers whose product-contacting surfaces are corrosion resistant to the reactants and products. The lithium oxide obtained according to the method described herein can used for the production of pure lithium hydroxide solutions or for the production of glasses glass ceramics or crystalline ceramics, for example, lithium ion conductive ceramics.

Abstract: A solvent-free mixture of a crude lithium borate salt and lithium hydride, wherein the lithium hydride is at least 0.001 wt. % and at most 10 wt. %, relative to the weight of crude lithium borate salt, wherein the mixture has a water content of at most 100 ?mol/g and an acid content of at most 10 ?mol H+/g of crude lithium borate salt, method for producing the same, and use thereof for battery electrolytes.

Abstract: The invention describes a method for producing a plate heat exchanger 1. Wavy profiled sheets 9 and separating sheets 10, together with sidebars 11, are stacked one above the other, provided with solder and soldered together in such a way that a block 2 is obtained. The block is closed off outwardly by means of the cover sheets 12. The contours of the intermediate pieces 3 are milled out at the respective positions 4 on the block 2 thus obtained. In a refinement of the invention, frames are used as intermediate pieces 3. The frames 3 are positioned in the milled-out portions at the positions 4, provided with solder and tacked on by means of spot welding. Subsequently, in a second step, the frames 3 are soldered onto the heat exchanger block 2. The headers 5a and 5b are in each case welded onto the frames 3.

Abstract: Mixtures of low-acid lithium borate salts and lithium hydride, methods for producing the same and the use thereof for battery electrolytes.

Abstract: A crystalline, completely soluble lithium bis(oxalato)borate (LiBOB), to a method for producing the same and to the use of the lithium bis(oxalato)borate.

Abstract: A crystalline, completely soluble lithium bis(oxalato)horate (LiBOB), to a method for producing the same and to the use of the lithium bis(oxalato)borate.

Abstract: The invention relates to conducting salts which contain lithium bis(oxalato)borate (LiBOB) and mixed lithium borate salts of the type of formula (I), wherein the portion of compound (I) in the conducting salt is 0.01 to 20 mole-% and X in formula (I) is a bridge linked with the boron via two oxygen atoms, selected from formula (II), wherein Y1 and Y2 together=O, m=1, n=0 and Y3 and Y4 independently represent H or an alkyl group with 1 to 5 C atoms, or Y1, Y2, Y3, Y4 independently represent OR (with R=alkyl group with to 5 C atoms), or H or an alkyl group with 1 to 5 C atoms, and wherein m=0 or 1, n=0 or 1, or Y2 and Y3 are members of a 5- or 6-membered aromatic or heteroaromatic ring (with N, O or S as the hetero element) which can be optionally substituted with alkyl, alkoxy, carboxy or nitrile, and if so, Y1 and Y4 are not applicable and n>0, m=0 or 1. The invention also relates to a method for producing the inventive conducting salts.

Abstract: A crystalline, completely soluble lithium bis(oxalato)horate (LiBOB), to a method for producing the same and to the use of the lithium bis(oxalato)borate.

Abstract: The invention relates to an activated alkaline earth metal, to a method for its production and the use of the activated alkaline earth metal for the preparation of Grignard compounds and organoalkaline earth metal compounds.

Abstract: The invention describes a method for producing a plate heat exchanger 1. Wavy profiled sheets 9 and separating sheets 10, together with sidebars 11, are stacked one above the other, provided with solder and soldered together in such a way that a block 2 is obtained. The block is closed off outwardly by means of the cover sheets 12. The contours of the intermediate pieces 3 are milled out at the respective positions 4 on the block 2 thus obtained. In a refinement of the invention, frames are used as intermediate pieces 3. The frames 3 are positioned in the milled-out portions at the positions 4, provided with solder and tacked on by means of spot welding. Subsequently, in a second step, the frames 3 are soldered onto the heat exchanger block 2. The headers 5a and 5b are in each case welded onto the frames 3.

Abstract: The invention describes a plate heat exchanger and a method for producing a plate heat exchanger. The plate heat exchanger consists of a multiplicity of passages 1a, 1b which are arranged in stack form and which are separated from one another by separating sheets 2. The passages 1a and 1b in this case consist of a multiplicity of hollow profiles 5 arranged next to one another.

Abstract: This invention relates to a process for preparing magnesium alkoxide granulates. The process includes the steps of reacting magnesium metal with at least one compound of formula AlR3-nHaln and an alcohol in a non-coordinating solvent. R is an alkyl or aryl radical, Hal is a halogen radical and n is in the range of between 0 and 2.

Abstract: A crystalline, completely soluble lithium bis(oxalato)borate (LiBOB), to a method for producing the same and to the use of the lithium bis(oxalato)borate.

Abstract: A mixture of low-acid lithium borate salts and lithium hydride, to methods for producing the same and to the use thereof for battery electrolytes.

Abstract: Plate heat exchanger for indirect heat exchange between at least two liquid and/or gaseous media with an essentially parallelepiped-shaped base (8), means for feeding and removing the media (headers 6, 6a, 7), and a number of passages (14), arranged essentially like stacks, for indirect heat exchange between media that respectively flow into adjacent passages (14), whereby the passages are formed by partitions (1, 22) that are spaced some distance apart, whereby the partitions are spaced some distance apart by end strips (4a, 4b), the passages have a corrugated profile (fins, 2), which is in heat-conductive contact with the partitions (1, 22) at its wave peaks and wave troughs, and the stack is closed off by a cover plate (5, 21), characterized in that the ratio between the width of the partition (B) and the repetition interval of the same characteristic of the corrugated profile as, for example, the repetition interval of two wave peaks (wavelength, LP) has a value in the range of between 15 and 80.

Abstract: The invention relates to magnesium alkoxide granulates, a method for the production thereof, and the use thereof.

Abstract: The invention relates to an activated alkaline earth metal, to a method for its production and the use of the activated alkaline earth metal for the preparation of Grignard compounds and organoalkaline earth metal compounds.