Metal nitrate conversion method
AssigneeJohnson Matthey PLC
InventorsJelle Rudolf Anne Sietsma, Adrianus jacobus Van Dillen, Petra Elisabeth De Jongh, Krijn Pieter De Jong
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Abstract
A method for converting a supported metal nitrate into the corresponding supported metal oxide comprises heating the metal nitrate to effect its decomposition under a gas mixture that contains nitric oxide and has an oxygen content of <5% by volume. The method provides very highly dispersed metal oxide on the support material. The metal oxide is useful as a catalyst or as a catalyst precursor.
Claims18
A method for converting a supported metal nitrate into the corresponding supported metal oxide comprising oxidizing by heating the metal nitrate to effect its decomposition under a flowing gas mixture comprising nitric oxide at a concentration in the range 0.001 to 15% by volume and having an oxygen content of <5% by volume, wherein the nitric oxide is not generated by decomposition of the metal nitrate and wherein the metal nitrate is not first subjected to a calcination step at a temperature at or above the decomposition temperature of the metal nitrate prior to the oxidizing step.
Dependencies are inferred from the claim text.