Catalyst precursor, catalyst using same, production method for compound and production method for catalyst
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsShigeki OKUMURA, Shogo YASUDA
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Abstract
A catalyst precursor represented by the following formula (1) having an average particle diameter (D50), which is a particle diameter at which a cumulative volume fraction is 50%, of 10 μm or more and 40 μm or less. Moa1Bib1Nic1Cod1Fee1Xf1Yg1Zh1Oi1 (1) where, Mo, Bi, Ni, Co and Fe represent molybdenum, bismuth, nickel, cobalt, and iron, respectively; X is tungsten or the like; Y is potassium or the like; and Z belongs to the 1st to 16th groups in the periodic table and represents at least one element selected from elements other than the above Mo, Bi, Ni, Co, Fe, X, and Y.
Claims10
A catalyst precursor represented by the following formula (1) having an average particle diameter (D50), which is a particle diameter at which a cumulative volume fraction is 50%, of 10 μm or more and 40 μm or less:
- where Mo, Bi, Ni, Co and Fe represent molybdenum, bismuth, nickel, cobalt, and iron, respectively;
- X is at least one element selected from tungsten, antimony, tin, zinc, chromium, manganese, magnesium, calcium, silicon, aluminum, cerium, and titanium;
- Y is at least one element selected from sodium, potassium, cesium, rubidium, and thallium;
- Z belongs to the 1st to 16th groups in the periodic table and represents at least one element selected from elements other than the above Mo, Bi, Ni, Co, Fe, X, and Y;
- a1, b1, c1, d1, e1, f1, g1, h1, and i1 represent the number of atoms of molybdenum, bismuth, nickel, cobalt, iron, X, Y, Z, and oxygen, respectively;
- when a1=12, 0<b1≤7, 0≤c1≤10, 0<d1≤10, 0<c1+d1≤20, 0≤e1≤5, 0≤f1≤2, 0≤g1≤3, 0≤h1≤5, and i is a value determined by an oxidation state of each element.
Dependencies are inferred from the claim text.