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AssigneeBASF SE
InventorsStephan SCHUNK, Andrian MILANOV, Andreas STRASSER, Guido WASSERSCHAFF, Thomas ROUSSIERE
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A hexaaluminate-containing catalyst for reforming hydrocarbons. The catalyst consists of a hexaaluminate-containing phase, which consists of cobalt and at least one further element from the group consisting of La, Ba, and Sr, and an oxidic secondary phase. To prepare the catalyst, an aluminum source is brought into contact with a cobalt-containing metal salt solution, dried, and calcined. The metal salt solution additionally contains the at least one further element. The reforming of methane and carbon dioxide is great economic interest since synthesis gas produced during this process can form a raw material for the preparation of basic chemicals. In addition, the use of carbon dioxide as a starting material is important in the chemical syntheses in order to bind carbon dioxide obtained as waste product in numerous processes by a chemical route and thereby avoid emission into the atmosphere.
A process for the reforming of hydrocarbons, preferably methane, in the presence of CO2, which comprises the following steps:
A hexaaluminate-comprising catalyst, where the hexaaluminate-comprising phase comprises cobalt and at least one further metal from the group consisting of Ba, Sr, La, where the Co content is in the range 2-15 mol %, preferably 3-10 mol % and more preferably in the range 4-8 mol %, the content of further metal from the group consisting of Ba, Sr, La is in the range 2-25 mol %, preferably 3-15 mol %, more preferably 4-10 mol %, and the content of Al is in the range 70-90 mol % and the catalyst has an oxidic secondary phase in the range 0-50% by weight, preferably 3-40% by weight, more preferably 5-30% by weight, preferably selected from the group consisting of theta-aluminum oxide, alpha-aluminum oxide, LaAlO3, BaAl2O4, SrAl2O4, CoAl2O4, La-stabilized aluminum oxides, La-stabilized aluminum oxide hydroxide, and the BET surface area of the hexaaluminate-comprising catalyst is greater than 2 m2/g, preferably greater than 4 m2/g, more preferably greater than 8 m2/g and in particular greater than 15 m2/g, which can be prepared by the following process
A process for preparing a hexaaluminate-comprising catalyst for the reforming of hydrocarbons and CO2, which comprises the following steps:
A hexaaluminate-comprising catalyst for the reforming of hydrocarbons, preferably methane, in the presence of CO2, wherein the catalyst comprises a hexaaluminate-comprising phase, where the hexaaluminate-comprising catalyst comprises cobalt and at least one further metal from the group consisting of Ba, Sr, La, where the Co content is in the range 2-15 mol %, preferably 3-10 mol % and more preferably in the range 4-8 mol %, the content of further metal from the group consisting of Ba, Sr, La is in the range 2-25 mol %, preferably 3-15 mol %, more preferably 4-10 mol %, and the content of Al is in the range 70-90 mol % and the catalyst has an oxidic secondary phase in the range 0-50% by weight, preferably 3-40% by weight, more preferably 5-30% by weight, preferably selected from the group consisting of theta-aluminum oxide, alpha-aluminum oxide, LaAlO3, BaAl2O4, SrAl2O4, CoAl2O4, La-stabilized aluminum oxides, La-stabilized aluminum oxide hydroxide, and the BET surface area of the hexaaluminate-comprising catalyst is greater than 2 m2/g, preferably greater than 4 m2/g, more preferably greater than 8 m2/g and in particular greater than 15 m2/g.
Dependencies are inferred from the claim text.