Hydrogenation catalyst for N-(2-nitroethyl) sodium taurate as well as preparation method and application of hydrogenation catalyst
A hydrogenation catalyst, a technology of sodium taurate, applied in the preparation of sulfonic acid, chemical instruments and methods, catalysts for physical/chemical processes, etc., can solve the problems of easy poisoning and deactivation of catalysts, high cost of precious metal catalysts, and achieve low cost, The effect of improving electron transfer performance, anti-poisoning performance and stability
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[0035] The preparation method of the nickel oxide supported catalyst is not limited, for example, a conventional deposition precipitation method in the art. Specifically, the preparation method of the supported nickel oxide includes the following steps, for example:
[0036] 1) dissolving the nickel salt in water to form a uniform nickel salt solution;
[0037] 2) Add vanadyl phosphate to the nickel salt solution and disperse evenly;
[0038] 3) Add modifier components to the mixed sample in which the nickel salt and the cocatalyst are uniformly dispersed to obtain a modified nickel salt solution;
[0039] 4) Disperse silicon dioxide with a certain amount of water, add the modified nickel salt solution to obtain a mixed solution, filter and dry the filter cake to obtain a powder, and calcinate to prepare the catalyst.
[0040] Wherein, the nickel salt described in step 1) is selected from one or more of nickel chloride, nickel sulfate, and nickel nitrate, and the mass concentr...
Embodiment 1
[0055] 1) Preparation of catalyst:
[0056] Take 11.88g of nickel chloride hexahydrate powder and ultrasonically vibrate for 2.5h to dissolve it in water;
[0057] Weigh 8.2g of vanadyl phosphate and slowly pour it into the prepared nickel chloride solution, and stir until the color of the solution is uniform;
[0058] Weigh 0.56g of potassium hydroxide, dilute with deionized water and add dropwise to the mixture of nickel chloride and vanadyl phosphate, stir at 60°C for 4h to obtain the active material mixture;
[0059] Use deionized water to ultrasonically disperse 24.7g of silica for 2 hours, pour the above active material mixture into it for immersion for 1 hour, filter and dry at 100°C for 8 hours to obtain a powder, which is calcined at 500°C in a tube furnace, nitrogen / hydrogen (95:5) under a mixed atmosphere for 1h, replace the gas with nitrogen / air (95:5), and continue calcination at 500°C for 1h to obtain the catalyst NiO-VPO-K / SiO 2 .
[0060] 2) Hydrogenation re...
Embodiment 2
[0063] 1) Preparation of catalyst:
[0064] Take 6.19g of nickel sulfate powder and ultrasonically dissolve it in water for 2.5h;
[0065] Weigh 13.2g of vanadyl phosphate and slowly pour it into the prepared nickel sulfate solution, and stir until the color of the solution is uniform;
[0066] Weigh 2.2g of potassium carbonate, dilute with deionized water and add dropwise to the mixture of nickel sulfate and vanadyl phosphate, stir at 100°C for 8h to obtain the active material mixture;
[0067] Ultrasonic disperse 12g of silicon dioxide with deionized water for 2 hours, pour the above active material mixture into it for immersion for 1 hour, filter and dry at 180°C for 12 hours to obtain a powder, which is calcined at 1000°C in a tube furnace, nitrogen / hydrogen ( 96:4) in a mixed atmosphere for 3 hours, replace the gas with nitrogen / air (96:4), and continue calcination at 1000°C for 3 hours to obtain the catalyst NiO-VPO-K / SiO 2 .
[0068] 2) Hydrogenation reaction experim...
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