Industrial naphthalene selective hydrogenation catalyst and preparation method thereof
A hydrogenation catalyst, naphthalene selectivity technology, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of increasing processing cost, affecting the yield of refined naphthalene, The problem of multiple hydrogen raw materials, etc., achieves the effect of good hydrogenation activity, stable activity and improved yield.
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[0038] The preparation method of a kind of industrial naphthalene selective hydrogenation catalyst provided by an aspect of the embodiment of the present invention comprises:
[0039]1) First prepare the carbon nanotube dispersion;
[0040] 2) mixing aluminum oxide with the carbon nanotube dispersion obtained in step 1) and then extruding into strips, followed by drying and roasting to obtain the carrier;
[0041] 3) Add the nonionic surfactant used in step 2) to the aqueous solution of the precursor of the metal active component to form a mixed solution, the precursor of the metal active component is selected from the group consisting of Group VIB and / or Group VIII metals A water-soluble compound of an element, the metal active component is selected from metal oxides, and then the carrier obtained in step 2) is impregnated in the mixed solution, followed by drying and roasting to obtain the selective hydrogenation catalyst.
[0042] In some embodiments, the industrial cataly...
Embodiment 1
[0062] (1) Preparation of modified carrier
[0063] Take 100g of small-pore alumina (commercially available ordinary small-pore alumina powder with a pore volume of 0.3-0.6ml / g), 60g of the aforementioned carbon nanotube dispersion, and 4g of turnip powder are mixed evenly, and then add 50ml of lemon-containing An aqueous solution of 2 g of acid was kneaded, extruded, dried at 100°C for 5 hours, and then calcined at 600°C for 3 hours to obtain a strip carrier.
[0064] (2) Preparation of catalyst:
[0065] a, the preparation of the metal impregnating solution is as mentioned above, take the tungsten-nickel solution (WO 3 Content 20.0g / 100ml, NiO content 7.0g / 100ml) 40ml, add polyethylene glycol octyl phenyl ether Triton X-100, the addition amount is about 6g, and make an aqueous solution;
[0066] b. Take 100 g of the modified carrier prepared in step (1), add it to the prepared aqueous solution (which contains metal ions) for impregnation, and filter;
[0067] c. Place the...
Embodiment 2
[0071] (1) Preparation of carrier
[0072] Take 100g of small-pore alumina (commonly available commercially available small-pore alumina powder with a pore volume of 0.3-0.6ml / g), 36g of carbon nanotube dispersion, and 3g of turnip powder are mixed evenly, and then add 50ml of citric acid 1.5g of aqueous solution was kneaded, extruded, dried at 120°C for 3 hours, and then calcined at 500°C for 4 hours to obtain a strip carrier.
[0073] (2) Preparation of catalyst:
[0074] a, the preparation of the metal impregnating solution is as mentioned above, take the tungsten-nickel solution (WO 3 content of 10.0g / 100ml, NiO content of 10.0g / 100ml) 40ml, add polyethylene glycol octyl phenyl ether Triton X-100, the addition amount is about 8g, and make an aqueous solution; b, take 100g of the preparation in step (1) The obtained carrier is added to the prepared aqueous solution (which contains metal ions) for impregnation, and filtered;
[0075] c. Place the product obtained in step ...
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