Hydro-fining catalyst roasted at low temperature and preparation method thereof
A hydrofining and low-temperature roasting technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of weakened interaction, decreased catalyst activity, etc., to reduce production costs, The effect of improving activity and stability
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[0020] Example 1:
[0021] Weigh 100g of modified aluminum hydroxide dry glue containing 2wt% fluorine and 6wt% zirconia, add 3g each of citric acid and sesame powder, and 5g carbon black. After mixing well, add 90ml of 3% dilute nitric acid solution and mix After being uniformly extruded into strips, the obtained strips were dried at 120°C for 4 hours and calcined at 550°C for 4 hours to prepare carrier S-1. The properties of carrier S-1 are shown in Table 1.
[0022] Table 1 Physical and chemical properties of carrier S-1
[0023]
[0024] The catalyst carrier S-1 was impregnated in an equal volume with an impregnating solution containing appropriate amounts of molybdenum trioxide, basic nickel carbonate and phosphoric acid. The impregnated carrier was dried at 120°C for 4 hours and calcined at 200°C for 4 hours to prepare catalyst C-1. . The prepared catalyst contains 22wt% of molybdenum (as oxide), 4wt% of nickel (as oxide) and 1.5wt% of phosphorus (as P 2 O 5 meter). Compara...
Example Embodiment
[0041] Example 2:
[0042] Using modified aluminum hydroxide dry glue containing 4wt% silicon, the preparation method of Example 1 was repeated to prepare the catalyst carrier S-2. The properties of the carrier S-2 are shown in Table 5.
[0043] Table 5 Physical and chemical properties of carrier S-2
[0044]
[0045] The catalyst carrier S-2 was impregnated with an equal volume of an impregnating solution containing an appropriate amount of molybdenum trioxide, basic nickel carbonate and phosphoric acid to prepare catalyst C-2. The preparation method was repeated in Example 1. The prepared catalyst contains 20wt% of molybdenum (as oxide), 3.8wt% of nickel (as oxide) and 1.4wt% of phosphorus (as P 2 O 5 meter).
Example Embodiment
[0053] Example 3:
[0054] Using modified aluminum hydroxide dry glue containing 4 wt% silicon and 6 wt% titanium, the preparation method of Example 1 was repeated to prepare a catalyst carrier S-3. The properties of the carrier S-3 are shown in Table 8.
[0055] Table 8 Physical and chemical properties of carrier S-3
[0056]
[0057] The catalyst carrier S-3 was impregnated with an equal volume of an impregnating solution containing an appropriate amount of molybdenum trioxide, basic nickel carbonate and phosphoric acid to prepare catalyst C-3. The preparation method was repeated in Example 1. The prepared catalyst contains 18wt% of molybdenum (as oxide), 3.5wt% of nickel (as oxide) and 1.4wt% of phosphorus (as P 2 O 5 meter).
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