Abstract:
The present invention relates to a process for reacting an aromatic hydrocarbon containing aromatic sulphur compounds, or a mixture of aromatic hydrocarbons containing aromatic sulphur compounds, where appropriate in the presence of hydrogen, comprising a first step of removing aromatic sulphur compounds (step a) and a second step of hydrogenating an aromatic hydrocarbon or mixture of aromatic hydrocarbons in the presence of a supported ruthenium catalyst in the presence of hydrogen (step b).
Abstract:
The present invention relates to a process for regenerating a ruthenium catalyst for the hydrogenation of phthalates, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity is attained.
Abstract:
The present application describes a process for regenerating a ruthenium catalyst for the hydrogenation of benzene, which comprises flushing the catalyst with inert gas in a regeneration step until the original or part of the original activity is attained.
Abstract:
The present invention relates to a process for the preparation of 1,2-propanediol, in which a glycerol-containing stream, in particular a stream obtained on an industrial scale in the production of biodiesel, is subjected to a hydrogenation.
Abstract:
The invention relates to a shell catalyst containing ruthenium as an active metal, alone or together with at least one other metal of the auxiliary group IB, VIIB or VIII of the periodical system of the elements (CAS version), and applied to a carrier containing silicon dioxide as a carrier material. The invention also relates to a method for producing said shell catalyst, and to a method for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols, using the inventive shell catalyst. The invention further relates to the use of the inventive shell catalyst for hydrogenating an organic compound containing hydrogenable groups, preferably for hydrogenating a carbocyclic aromatic group to form the corresponding carbocyclic aliphatic groups or for hydrogenating aldehydes to form the corresponding alcohols.
Abstract:
The present invention relates to a process for regenerating a ruthenium catalyst for the hydrogenation of phthalates, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity is attained.
Abstract:
The invention relates to a method for producing 1,2-propandiol, wherein a flow containing glycerine, in particular a flow produced on an industrial scale during the production of biodiesel, is subjected to low-pressure hydrogenation.