摘要:
The present invention relates to thermally stable, high surface area alumina supports and a method of preparing such supports with at least one modifying agent. The method includes adding an aluminum modifying agent to the alumina prior to calcining. The inventive support has thermal stability at temperatures above 800null C. A more specific embodiment of the invention is a catalyst having a high surface area, thermally stable alumina support with at least one group VIII metal or rhenium and an optional promoter loaded onto the support. The present invention further relates to gas-to-liquids conversion processes, more specifically for producing C5null hydrocarbons.
摘要:
The present invention relates to thermally stable, high surface area alumina supports and method of preparing such supports with at least one modifying agent. The method includes adding the modifying agent to the alumina prior to calcining. More particularly, the invention relates to the use of such catalysts for the catalytic partial oxidation of light hydrocarbons (e.g., methane or natural gas) to produce primarily synthesis gas. The present invention further relates to gas-to-liquids conversion processes, more specifically for producing C5null hydrocarbons.
摘要:
According to a preferred embodiment, the present invention features a bulk catalyst that includes precipitated cobalt metal. The precipitated cobalt catalyst further includes a textural promoter, a binder and optionally a Group I metal. The method of making the catalyst is optimized so as to enhance attrition resistance and improve activity. According to some embodiments, the present catalyst is made by a method that includes one or a combination of: calcination under optimized temperature conditions; exposure to an acidic solution; and addition of a binder to a suspension of a precipitate. According to some embodiments, a Fischer-Tropsch process includes contacting the present catalyst with a feed stream containing carbon monoxide and hydrogen so as to produce hydrocarbons.
摘要:
The present invention discloses synthesis gas catalysts, and methods for making such catalysts, that are active for promoting partial oxidation of light hydrocarbons to CO and H2. The catalysts comprise a support and an active metal. The catalysts may further comprise a promoter and halide or a rare earth oxyhalide. The present invention further discloses a method for producing synthesis gas by net partial oxidation of light hydrocarbons by contacting O2 and light hydrocarbons in the presence of a synthesis gas catalyst as previously described. The present invention also describes a method for extending the life of a synthesis gas catalyst by contacting the catalyst with a halide. A method for making middle distillates from light hydrocarbons by partial oxidation of light hydrocarbons over a synthesis gas catalyst as previously described and Fischer-Tropsch reaction is also disclosed.
摘要:
A catalyst and method for producing hydrocarbons using a catalyst support having an improved hydrothermal stability, such as under Fischer-Tropsch synthesis conditions. The stabilized support is made by a method comprising treating a boehmite material in contact with at least one structural stabilizer. Contacting the boehmite with at least one structural stabilizer can include forming a mixture comprising the boehmite material and at the least one structural stabilizer. The mixture can be a sol or a slurry. The treating preferably includes drying or spray drying the mixture, and calcining in an oxidizing atmosphere to obtain the stabilized support. Preferred structural stabilizers can include an element, such as cobalt, magnesium, zirconium, boron, aluminum, barium, silicon, lanthanum, oxides thereof, or combinations thereof; or can include precipitated oxides, such as a co-precipitated silica-alumina.