Nickel-based adsorbent for deep desulfurization and deodorization of isopropanol and preparation method and application thereof
A technology for deep desulfurization and adsorbent, which is applied in chemical instruments and methods, other chemical processes, separation/purification of hydroxyl compounds, etc. Desulfurization and deodorization catalyst, only focus on the deodorization effect, etc., to achieve the effect of good application prospect, simple preparation process and easy industrialization
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[0059] The preparation method of the normal-temperature high-efficiency nickel-based adsorbent for isopropanol deep desulfurization and deodorization of the present invention comprises the following steps:
[0060] (1) Melting, granulating or forming of metal alloys;
[0061] (2) Activation treatment of the metal alloy particles using an alkaline solution;
[0062] (3) washing the activated metal alloy particles with deionized water;
[0063] (4) Optionally, impregnating and modifying the washed metal alloy particles with an auxiliary water-soluble salt;
[0064] (5) Optionally, the particles obtained in the step (4) are washed with deionized water to obtain a granular nickel-based adsorbent.
[0065] In a preferred embodiment, the smelting of the metal alloy and the preparation of the particles in step (1) include: smelting of metal nickel, aluminum or additives, crushing to a certain particle for use or casting to a certain shape, or crushing The powder form is then forme...
Embodiment 1
[0080] Accurately weigh 500 grams of nickel with a purity greater than 99% and 500 grams of aluminum with a purity greater than 99%, put it in an intermediate frequency furnace for melting at 1650°C for 1 hour, pour it into a mold, cool it naturally, and crush it with a jaw The machine is crushed and sieved to obtain 3-6mm particles.
[0081] Then, the composition is Ni 50 al 50 200g of the metal alloy particles are placed in a quartz glass tube with an internal diameter of 50mm. The NaOH alkali solution with a concentration of 0.8% by weight flows from the bottom of the quartz glass tube at a rate of 5L / hour through the metal alloy particle bed and then flows out from the top. The gravimetric space velocity of NaOH alkali solution is 25 hours -1 . The bed temperature is 30° C., and the activation treatment time is 4 hours. After the alkaline solution activation treatment, washing is performed with deionized water at 50° C. until the pH of the solution after washing is 7-9...
Embodiment 2
[0083] Accurately weigh 450 grams of nickel with a purity greater than 99%, 500 grams of aluminum with a purity greater than 99%, and 50 grams of iron with a purity greater than 99%, melt them in an intermediate frequency furnace at 1600°C for 1.5 hours, and pour them out into the mold After natural cooling in the furnace, the alloy powder with a particle size of less than 150 mesh is obtained through a jaw crusher and a ball mill, and then water, pseudo-boehmite, binder, and graphite are added, and after being sliced, dried and roasted by a tablet machine Cylindrical pellets with a diameter of 3 mm and a height of 3 mm were obtained.
[0084] Then, the composition is Ni 45 al 50 Fe 5 200g of metal alloy particles, placed in a quartz glass tube with an internal diameter of 50mm, the concentration of 1.0% by weight KOH alkali solution flows from the bottom of the quartz glass tube through the metal alloy particle bed at a rate of 5L / hour and then flows out from the top, NaOH ...
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