摘要:
Aromatic amines are produced by adiabatic hydrogenation of nitroaromatic compounds in the gas phase on one or more fixed catalysts. The nitroaromatic reactant is passed over the catalyst under pressure and at elevated temperature with hydrogen, water, optionally nitrogen and substantially in the absence of the aromatic amine produced from the nitroaromatic.
摘要:
Aromatic amines are produced by adiabatic hydrogenation of nitroaromatic compounds in the gas phase on one or more fixed catalysts. The nitroaromatic reactant is passed over the catalyst under pressure and at elevated temperature with hydrogen, water, optionally nitrogen and substantially in the absence of the aromatic amine produced from the nitroaromatic.
摘要:
Nitroaromatic compounds are hydrogenated in the gas phase to form aromatic amines with hydrogen in the presence of one or more catalysts arranged in stationary or virtually stationary beds in a reactor. In this process, the catalyst in the reactor is at least partly replaced continuously or at periodic intervals. At least 10% of the catalyst is replaced within each 20 day interval subsequent to start up of the reaction.
摘要:
Compounds containing phenolic hydroxy groups are removed from a gas stream which contains at least one aromatic amine generated during the gas-phase hydrogenation reaction of the corresponding nitroaromatic compounds with hydrogen, by adsorption on a basic solid.
摘要:
Compounds containing phenolic hydroxy groups are removed from a gas stream which contains at least one aromatic amine generated during the gas-phase hydrogenation reaction of the corresponding nitroaromatic compounds with hydrogen, by adsorption on a basic solid.
摘要:
The present invention relates to a process and an apparatus for preparing aromatic amines by means of a heterogeneously catalysed hydrogenation, wherein the catalyst required for the reaction is applied to the interior wall of one or more reaction channels which are cooled from the outside.
摘要:
Catalyst for oxidation reactions which comprises at least one constituent active in the catalysis of hydrogen chloride oxidation and support therefor, which support is based on uranium oxide. The catalyst is notable for a high stability and activity.
摘要:
Method for the production of phthalic acid anhydride by catalytic gas phase oxidation of o-xylol with oxygen, in which the reaction is carried out in 5 to 60 serially arranged reaction zones under adiabatic conditions, and reactor system for carrying out the method.
摘要:
Process for the endothermic, catalytic gas phase oxidation of hydrocarbons with steam and carbon dioxide to hydrogen and carbon monoxide (synthesis gas), performed in 5 to 30 series-connected reaction zones under adiabatic conditions.
摘要:
The present invention relates to a novel uranium catalyst on a support of particular pore size distribution, to a process for preparation thereof, and to the use thereof in the course of processes for preparing chlorine from hydrogen chloride.