Abstract:
Absorption heat pumps, absorption refrigeration machines and absorption heat transformers (referred to as apparatus for short) operated using A) methanol as refrigerant and B) a composition comprising the ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIM acetate for short) as absorption medium.
Abstract:
A storage medium for storing hydrogen as well as a process for storing hydrogen are described.According to the invention, the storage medium has an ammonia-borane complex that is present in at least one dehydrogenatable ionic liquid.In this connections the proportion of the ammonia-borane complex to the ionic liquid is between 0.01 and 500, preferably between 0.2 and 10, and in particular between 0.5 and 20.
Abstract:
Salts of the anion of di-, tri- or tetrathiophosphoric acid of the formula I in which Z1 and Z2 are each independently an oxygen or sulfur atom, and Ra and Rb are each independently an organic group having 1 to 20 carbon atoms, and a cation which comprises a heterocyclic ring system having one to three nitrogen atoms.
Abstract:
An electro-optically switchable system that includes an optically active element and a momentary switch, a container that includes such an electro-optically switchable system and use of such an electro-optically switchable system for providing containers that allow increased light to pass through into the interior thereof only for the duration of a control intervention.