摘要:
A process for the preparation of a phenyl amine which may be substituted by alkyl or cycloalkyl in which the corresponding cyolohexylamine is reduced at temperatures of 150.degree. to 300.degree. C. and pressures of 0.01 to 50 bar in the presence of a heterogeneous dehydrogenation catalyst consisting essentially of palladium or a palladium/platinum mixture supported on carrier consisting of the oxides of rare earth metals and and metals of Group IVb of the Periodic Table of Elements, with the proviso that the palladium/platinum mixture may also be supported on an alumina carrier. The cyclohexylamine reactant can be advantageously prepared by reacting the corresponding phenol with ammonia and hydrogen at 100.degree. to 250.degree. C. in the presence of the same heterogeneous catalyst as a preliminary step to provide a two stage process using the same catalyst in both stages.
摘要:
Catalysts consisting of from 85 to 100 wt % of copper oxide and zirconium oxide and from 15 to 0 wt % of metal oxides of the subgroups Ib to VIIb and VIII of the Periodic Table and a process for the preparation of amines from nitriles and nitrogen compounds selected from the group comprising ammonia and primary and secondary amines, at temperatures of from 80.degree. to 250.degree. C. and pressures of from 1 to 400 bar using hydrogen in the presence of said catalysts.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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%.