High-level and high-stability dehydrogenation catalysts based on iron oxides with a low concentration of titanium and its formulation and use of

摘要

1. The composition of the dehydrogenation catalyst based on iron oxide, comprising: an iron oxide component having a low titanium content, wherein said iron oxide component is obtained by heat treatment of a yellow iron oxide precipitate prepared from an iron salt solution by precipitation, and wherein said dehydrogenation catalyst composition based oxide iron has a first concentration of titanium that is less than about 300 hours. / mln.2. A composition according to claim 1, wherein said yellow iron oxide precipitate has a second concentration of titanium that is less than about 300 ppm / mln.3. A composition according to claim 2, wherein said yellow iron oxide precipitate further is characterized in that it is formed by adding a colloidal hydrate of iron to an aqueous solution of an iron salt, wherein said aqueous solution contains metallic iron, by introducing an oxidant into said aqueous solution and by precipitation and isolating said precipitate of yellow zheleza.4 oxide. A composition according to claim 3, wherein said dehydrogenation catalyst composition based on the iron oxide further includes an additional dehydrogenation catalyst component selected from the group of compounds consisting of potassium compounds, cerium compounds, molybdenum compounds, tungsten compounds and kaltsiya.5 compounds. A composition according to claim 4, wherein said dehydrogenation catalyst composition based on the iron oxide further comprises iron oxide in an amount of from 10 to 98% of the total weight of the composition of the dehydrogenation catalyst based on iron oxide and calculated for FeO.6. A composition according to claim 5, wherein said heat treatment is carried out