Abstract:
Polyunsaturated hydrocarbons of the formula ##STR1## are prepared from unsaturated alcohols of the formula ##STR2## in the presence of zeolite catalysts, in particular zeolites of the pentasil type.
Abstract:
Acylated imidazoles of the formula ##STR1## where R.sup.1 and R.sup.3 are each H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, R.sup.4 is H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, and R.sup.5 is alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl, alkylaryl or carboxyl, are prepared by reacting imidazoles of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 are each alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, at least one of the radicals R.sup.1, R.sup.2 and R.sup.3 being hydrogen, and R.sup.4 is H, alkyl of from 1 to 12 carbon atoms, alkenyl of from 1 to 12 carbon atoms, aryl, aralkyl or alkylaryl, with widely used acylating agents of the formula ##STR3## where R.sup.5 is as defined above and Y is halide, alkoxy, acyloxy or hydroxyl, in the presence of acidic metal oxides and/or phosphates, preferably in the gas phase.
Abstract:
Chromium-free catalyst for the low-temperature conversion of carbon monoxide and water into hydrogen and carbon dioxide, which comprises a mixed oxide comprising at least copper oxide, zinc oxide and aluminum oxide, with the catalyst precursor being present essentially as hydrotalcite and the copper oxide content being not more than 20% by weight.
Abstract:
A method for setting up communication links between a first vehicle and at least one second vehicle using telematics units, wherein the telematics unit is activated by the respective driver, and the driver of the first vehicle uses the telematics unit to input registration identifiers into the telematics unit in the first vehicle, and the telematics unit in the first vehicle sets up a communication link to at least one second telematics unit in a second vehicle, and the registration identifier is checked by the telematics unit in the second vehicle via the communication link, and the registration identifier of the first vehicle is output to the driver of the second vehicle via the telematics unit in the vehicle, with setup of a communication link to the first vehicle being confirmed by an input, requested by the driver of the second vehicle, using the telematics unit in the second vehicle.
Abstract:
A method of electrochemically preparing a crystalline, porous, metal-organic framework material comprising at least one at least bidentate organic compound coordinately bound to at least one metal ion, in a reaction medium comprising the at least one bidentate organic compound, wherein at least one metal ion is provided in the reaction medium by the oxidation of one anode comprising the corresponding metal.
Abstract:
A method for setting up communication links between a first vehicle and at least one second vehicle using telematics units, wherein the telematics unit is activated by the respective driver, and the driver of the first vehicle uses the telematics unit to input registration identifiers into the telematics unit in the first vehicle, and the telematics unit in the first vehicle sets up a communication link to at least one second telematics unit in a second vehicle, and the registration identifier is checked by the telematics unit in the second vehicle via the communication link, and the registration identifier of the first vehicle is output to the driver of the second vehicle via the telematics unit in the vehicle, with setup of a communication link to the first vehicle being confirmed by an input, requested by the driver of the second vehicle, using the telematics unit in the second vehicle.
Abstract:
Chromium-free catalyst for the low-temperature conversion of carbon monoxide and water into hydrogen and carbon dioxide, which comprises a mixed oxide comprising at least copper oxide, zinc oxide and aluminum oxide, with the catalyst precursor being present essentially as hydrotalcite and the copper oxide content being not more than 20% by weight.
Abstract:
Carbon monoxide is removed from material streams by adsorption to an adsorption composition comprising oxides of copper, zinc and aluminum, the copper-comprising fraction of which has a degree of reduction, expressed as weight ratio of metallic copper to the sum of metallic copper and copper oxides, calculated as CuO, of at most 60%.
Abstract:
The present invention relates to a method of absorbing and/or storing gases, in which the gas to be stored is brought into contact with an electrochemically prepared metal-organic framework under conditions suitable for absorption of the gas, with absorption of the gas into the metal-organic framework occurring, and, if appropriate, the conditions are subsequently changed so that release of the stored gas occurs.
Abstract:
The present invention relates to a gas pressure container having a minimum volume of 1 m3 and a prescribed maximum filling pressure for the uptake, storage and delivery of a fuel gas which is gaseous under storage conditions and is suitable for powering a vehicle by combustion of the fuel gas, wherein the gas pressure vessel has a filter through which the fuel gas can flow at least during uptake or during delivery, with the filter being suitable for removing possible impurities in the fuel gas from the stream and the impurities being able to reduce the storage capacity for the fuel gas of an adsorbent used for the storage of the fuel gas.The invention further relates to the use of such a gas pressure container for filling a further gas pressure container which is present in or on a vehicle and comprises an adsorbent for the storage of the fuel gas.