Composition for catalyst production, method for producing composition for catalyst production, and production method for producing oxide catalyst
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsNatsume Koike, Gosuke Oyama
Life of this patent
Estimating the term…
Abstract
Provided is a composition for catalyst production which is used in the production of a catalyst for gas phase catalytic oxidation reaction or a catalyst for gas phase catalytic ammoxidation reaction, wherein the composition for catalyst production is an aqueous solution containing a niobium compound and hydrogen peroxide and optionally containing an organic acid, a molar ratio (organic acid/Nb) of a concentration of the organic acid to a Nb concentration is 0.00 or more and 2.00 or less, and a molar ratio (hydrogen peroxide/Nb) of a concentration of the hydrogen peroxide to a Nb concentration is 0.01 or more and 50 or less.
Claims9
A composition for catalyst production which is used in the production of a catalyst for gas phase catalytic oxidation reaction or a catalyst for gas phase catalytic ammoxidation reaction, wherein
- the composition for catalyst production is an aqueous solution comprising a niobium compound and hydrogen peroxide and optionally comprising an organic acid,
- a molar ratio (organic acid/Nb) of a concentration of the organic acid to a Nb concentration in the composition for catalyst production is 0.00 or more and 2.00 or less,
- a molar ratio (hydrogen peroxide/Nb) of a concentration of the hydrogen peroxide to a Nb concentration in the composition for catalyst production is 0.01 or more and 50 or less, and
- in a Raman spectrum of the composition for catalyst production by Raman spectroscopy, a ratio (Y/X) of an intensity Y of a largest peak observed in a range of 890 cm−1 or more and 1000 cm−1 or less to an intensity X of a largest peak observed in a range of 500 cm−1 or more and 650 cm−1 or less is 0 or more and 1.0 or less.
A composition for catalyst production which is used in the production of a catalyst for gas phase catalytic oxidation reaction or a catalyst for gas phase catalytic ammoxidation reaction, wherein
- the composition for catalyst production is an aqueous solution comprising a niobium compound and hydrogen peroxide and optionally comprising an organic acid, and
- in a Raman spectrum of the composition for catalyst production by Raman spectroscopy,
- a ratio (Y/X) of an intensity Y of a largest peak observed in a range of 890 cm−1 or more and 1000 cm−1 or less to an intensity X of a largest peak observed in a range of 500 cm−1 or more and 650 cm−1 or less is 0 or more and 1.0 or less.
Dependencies are inferred from the claim text.