Vanadium-free rare-earth-based titanium-tungsten powder and preparation method therefor
A rare earth-based, titanium-tungsten powder technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. Improve dispersion, chemical poisoning of catalysts, etc., to achieve the effect of inhibiting catalyst poisoning, short production cycle, and improving sulfur resistance
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Embodiment 1
[0024] Embodiment 1, a vanadium-free rare earth-based titanium-tungsten powder, the composition includes: titanium dioxide 750kg, ammonium metatungstate 10kg, cerium nitrate 15kg, lanthanum nitrate 15kg, rhenium nitrate 10kg, manganese molybdenum nickel composite metal oxide (Mn-Mo- Ni-OX) 10kg, monoethanolamine 5kg, citric acid 5kg.
[0025] Wherein, the molar ratio of Mn / Mo / Ni elements in the Mn-Mo-Ni-Ox composite metal oxide active component is 1:0.5:0.5. Titanium dioxide is anatase nano titanium dioxide
[0026] The preparation method is:
[0027] (1) Anatase-type nano-titanium dioxide is added a sufficient amount of water to be made into a suspension with a concentration of 15%;
[0028] (2) Add 20 liters of water into the dissolving tank, then add monoethanolamine into the dissolving tank, when the temperature reaches 90°C, add ammonium metatungstate and stir evenly, and dissolve it completely for later use;
[0029] (3) Add 50 liters of water into the dissolving tank...
Embodiment 2
[0033] Embodiment 2, a kind of vanadium-free rare earth base titanium tungsten powder, composition comprises: titanium dioxide 900kg, ammonium paratungstate 60kg, cerium sulfate 20kg, lanthanum sulfate 40kg, manganese molybdenum nickel composite metal oxide (Mn-Mo-Ni-O X ) 15kg, monoethanolamine 15kg, citric acid 25kg.
[0034] Among them, manganese molybdenum nickel composite metal oxide (Mn-Mo-Ni-O X ) in the Mn / Mo / Ni element molar ratio of 1:1:1. Titanium dioxide is anatase nano titanium dioxide.
[0035] The preparation method is:
[0036] (1) Anatase-type nano-titanium dioxide is added a sufficient amount of water to be made into a suspension with a concentration of 15%;
[0037] (2) Add 30 liters of water into the dissolving tank, and then add monoethanolamine into the dissolving tank to mix and dissolve. When the temperature reaches 100°C, add ammonium paratungstate and stir evenly, and dissolve it completely for later use;
[0038] (3) 60 liters of water are added to...
Embodiment 3
[0042] Embodiment 3, a kind of vanadium-free rare earth base titanium tungsten powder, composition comprises: titanium dioxide 800kg, ammonium metatungstate 50kg, rhenium nitrate 50kg, manganese molybdenum nickel composite metal oxide (Mn-Mo-Ni-O X ) 12kg, monoethanolamine 10kg, citric acid 20kg.
[0043] Among them, manganese molybdenum nickel composite metal oxide (Mn-Mo-Ni-O X ) in Mn / Mo / Ni element molar ratio is 1:0.8:0.8. Titanium dioxide is anatase nano titanium dioxide.
[0044] The preparation method is:
[0045] (1) Anatase-type nano-titanium dioxide is added a sufficient amount of water to be made into a suspension with a concentration of 15%;
[0046] (2) Add 20 liters of water into the dissolving tank, and then add monoethanolamine into the dissolving tank to mix and dissolve. When the temperature reaches 88°C, add ammonium metatungstate and stir evenly, and dissolve it completely for later use;
[0047] (3) 50 liters of water are added to the dissolving tank, ...
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