摘要:
The invention relates to a catalyst-composition for the oxychlorination of ethylene, containing a mixture of metal salts on a support, whereby the above-mentioned metal salts are applied to the support in such ratio proportions that the catalyst-composition comprises: a) 3 - 12 wt. % of copper as a copper salt, b) 0 - 3 wt. % of an alkaline earth metal as an alkaline earth metal salt, c) 0 - 3 wt. % of an alkaline metal as an alkaline metal salt, d) 0.001 - 0.1 wt. % preferably 0.005 - 0.05 wt.- %, of at least one metal selected from the group of ruthenium, rhodium, palladium, osmium, iridium and platinum and/or 0.0001 - 0.1 wt. % preferably 0.001 - 0.05 wt. % and gold, as a corresponding metal salt or tetrachlorogold acid, whereby all the weight percentages are in relation to the total weight of the catalyst including the support material. The invention also relates to a method for producing 1.2 dichlorethane for the oxychlorination of ethylene by catalysing the above mentioned catalyst-composition.
摘要:
The invention relates to a method for the production of 1,2-dichloroethane, comprising the following steps: (A) feeding a feed gas flow containing an ethane into a dehydrogenation zone; dehydrogenating the ethane into ethene while obtaining a product gas flow containing ethane, ethene and minor constituents; (B) feeding the dehydrogenated product gas flow containing the ethane and ethene into a flow or several partial flows, optionally after separating the minor constituents, in one or more chlorination zones; chlorinating ethene into 1,2-dichloroethane while obtaining one or more product gas flows containing 1,2-dichloroethane, ethane and optionally other minor; obtaining 1,2-dichloroethane and one or more circuit gas flows containing ethane and recirculating the circuit gas flow(s) containing ethane to the ethane dehydrogenation.
摘要:
The invention relates to a method for producing chlorine by oxidising hydrogen chloride in the presence of a catalyst, whereby hydrogen chloride is not used in a gaseous form, but at least partially in the form of hydrochloric acid. In an especially preferred form of embodiment, the feed gas flow containing hydrogen chloride is obtained from phosgene and primary amines during the isocyanate synthesis, and the product gas flow containing chlorine is used to produce the phosgene which is subsequently reacted with the primary amines to form isocyanates. The invention thus also relates to an integrated method for producing organic isocyanates.
摘要:
The invention relates to a catalytically active composition for the selective methanation of carbon monoxide. Said composition is characterised in that it contains as the active component at least one element selected from the group consisting of ruthenium, rhodium, nickel and cobalt and a carbon-based support. The invention also relates to the use of said catalytically active composition for the selective methanation of carbon monoxide and to the use of the composition for generating hydrogen in fuel-cell applications.
摘要:
The invention relates to a method for the catalytic production of melamine by the decomposition of urea in particular on solid catalysts using a main and post reactor. A catalyst of low Lewis acidity is employed in the main reactor and in the post reactor a catalyst is employed with the same or preferably a greater Lewis acidity.
摘要:
The invention relates to a method for the production of 1,2-dichloroethane, comprising the following steps: (A) feeding a feed gas flow containing an ethane into a dehydrogenation zone; dehydrogenating the ethane into ethene while obtaining a product gas flow containing ethane, ethene and minor constituents; (B) feeding the dehydrogenated product gas flow containing the ethane and ethene into a flow or several partial flows, optionally after separating the minor constituents, in one or more chlorination zones; chlorinating ethene into 1,2-dichloroethane while obtaining one or more product gas flows containing 1,2-dichloroethane, ethane and optionally other minor; obtaining 1,2-dichloroethane and one or more circuit gas flows containing ethane and recirculating the circuit gas flow(s) containing ethane to the ethane dehydrogenation.