Supported active chalcogenide compound as well as preparation method and application thereof
A technology of active sulfur and complexes, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of low adsorption rate, small adsorption capacity, small temperature window, etc., and achieve the improvement of adsorption capacity and adsorption rate, Applicable to the effect of large temperature window and low cost
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Embodiment 1
[0057] Soak industrial selenium powder (purity 98%) in dilute acid solution for 5h, rinse with deionized water and ethanol for 3 times in turn, dry at 100°C, then crush and grind, pass through a 200-mesh sieve, and take off the sieve; prepare saturated sodium borohydride The reducing solution is added dropwise to the surface-treated industrial selenium powder at a ratio of 0.4g / mL, fully wetted and mixed evenly, and the constant temperature water bath is continuously stirred at 30°C for 30min to a paste, and the dosage is continued at 0.7g / mL. Sodium carbonate activator, stir for 60min to form a uniform slurry; add a large amount of acidic diluent to the slurry in a volume ratio of 1:50, adjust the acidity of the solution to pH=12, and continue to stir and age for 2h to prepare an active impregnation solution; The purchased commercial activated carbon (mass ratio of 0.05g / g to industrial selenium powder) was immersed in the active impregnation solution, continuously shaken for ...
Embodiment 2
[0062] Soak the medicinal selenium powder (purity 99.9%) in dilute acid solution for 3 hours, rinse with deionized water and ethanol for 3 times in turn, dry at 100°C, crush and grind, pass through a 200-mesh sieve, and take the undersize; take the reduced hydrazine reducing solution , the reducing solution was added dropwise to the surface-treated industrial selenium powder at a ratio of 0.32g / mL, fully wetted and mixed evenly, and the constant temperature water bath was continuously stirred at 45°C for 10min until it became a paste, and 0.2g / mL continued to add hydrogen peroxide. Sodium activator, stir for 20min to form a uniform slurry; add a large amount of acidic diluent to the slurry in a volume ratio of 1:60, adjust the acidity of the solution to pH=10, continue to stir and age for 2h to prepare an active impregnation solution; (Mass ratio of 0.03g / g with industrial selenium powder) was immersed in the active impregnation solution, continuously shaken for 6 hours, the tw...
Embodiment 3
[0065] Soak industrial sulfur powder (purity 98%) in dilute acid solution for 8 hours, rinse with deionized water and ethanol for 3 times in turn, dry at 90°C, crush and grind, pass through a 200-mesh sieve, and take off the sieve; prepare stannous chloride Saturate the reducing solution, add the reducing solution dropwise to the surface-treated sulfur powder at a ratio of 1 g / mL, fully wet and mix evenly, and continue stirring in a constant temperature water bath at 30 °C for 20 minutes to a paste, and continue to add hydrogen at a rate of 0.8 g / mL. Potassium oxide activator, stir for 20min to form a uniform slurry; add a large amount of acidic diluent to the slurry in a volume ratio of 1:30, adjust the acidity of the solution to pH=12, continue to stir and age for 1h to prepare an active impregnation solution; ZSM-5 molecular sieve (mass ratio of 0.1 g / g to sulfur powder) was immersed in the active impregnation solution, continuously shaken for 8 hours, centrifuged, washed tw...
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