Acid activated montmorillonite supported cobalt catalyst, preparation method and application thereof
A technology of montmorillonite and acid activation, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Inconvenient production and application, harsh preparation conditions of the columnizer, etc., to achieve the effect of simple method, controllable conditions and good stability
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Embodiment 1
[0023] 1. Acid activated montmorillonite
[0024] Disperse 10g of montmorillonite in 490g of 20% nitric acid aqueous solution by mass fraction to prepare a 2% montmorillonite suspension, stir, activate at 80°C for 12 hours, and centrifuge at 8000 rpm for 10 minutes with a centrifuge , the precipitate was washed with distilled water until neutral, dried in an oven at 60-80°C for 10-12 hours, and ground with a mortar to prepare acid-activated montmorillonite.
[0025] The prepared acid-activated montmorillonite was tested with a Belsorp Max physical adsorption instrument, and its specific surface area was 186.54m 2 / g, the pore volume is 0.33cm 3 / g, the average pore diameter is 6.99nm.
[0026] 2. Preparation of cobalt-based catalyst
[0027] Using the equal volume impregnation method, according to the loading of metal Co as 20%, add 0.9877g cobalt nitrate hexahydrate to 0.15mL deionized water, and ultrasonic for 15 minutes to prepare the impregnation solution; add 1.00g aci...
Embodiment 2
[0029] In the preparation acid-activated montmorillonite step 1 of embodiment 1, 10g montmorillonite is dispersed in 490g mass fraction and is 20% nitric acid aqueous solution, is mixed with the mass fraction and is 2% montmorillonite suspension, stirs, 100 Activate at ℃ for 24 hours, centrifuge at 8000 rpm for 10 minutes, wash the precipitate with distilled water until neutral, dry it in an oven at 60-80℃ for 10-12 hours, and grind it with a mortar to prepare acid-activated montmorillonite . In step 2 of preparing the cobalt-based catalyst, an equal-volume impregnation method is adopted, and the loading capacity of metal Co is 20%, 0.9877g of cobalt nitrate hexahydrate is added to 0.54mL of deionized water, and the impregnation solution is prepared by ultrasonication for 15 minutes. The other steps are the same as in Example 1 to prepare an acid-activated montmorillonite-supported cobalt catalyst.
[0030] The prepared acid-activated montmorillonite was tested with a Belsorp...
Embodiment 3
[0032] In the preparation acid-activated montmorillonite step 1 of embodiment 1, 10g montmorillonite is dispersed in 490g mass fraction and is 20% nitric acid aqueous solution, is mixed with the mass fraction and is 2% montmorillonite suspension, stirs, 80 Activate at ℃ for 36 hours, centrifuge at 8000 rpm for 10 minutes, wash the precipitate with distilled water until neutral, dry it in an oven at 60-80℃ for 10-12 hours, and grind it with a mortar to prepare acid-activated montmorillonite . In step 2 of preparing the cobalt-based catalyst, an equal-volume impregnation method is adopted, and the loading capacity of metal Co is 20%, 0.9877g of cobalt nitrate hexahydrate is added to 0.34mL of deionized water, and the impregnation solution is prepared by ultrasonication for 15 minutes. The other steps are the same as in Example 1 to prepare an acid-activated montmorillonite-supported cobalt catalyst.
[0033] The prepared acid-activated montmorillonite was tested with a Belsorp ...
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