A kind of hydrogen-type pilanolite and its preparation method and application
A saponite and saponite technology, applied in the field of hydrogen-type saponite, can solve the problems of structural changes, cumbersome steps, complicated preparation methods, etc., achieve simplified preparation process, large specific surface area and pore volume, simplified preparation The effect of craftsmanship
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preparation example 1
[0060] Dissolve 99.5g of sodium metasilicate nonahydrate, 4.8g of sodium hydroxide, and 82.68g of sodium carbonate in 500g of water to make lye, then take 60.9g of magnesium chloride hexahydrate and 12.1g of aluminum chloride hexahydrate in 50g of water to make Salt solution, slowly drop the salt solution into the above alkaline solution at 60°C to obtain an initial gel with a synthetic saponite layer charge of 1.0 (pH 10.58), then continue to age for 30 minutes, put it into a 1L autoclave, and heat it at 300°C Crystallized for 48h. The obtained product was centrifuged and washed with deionized water until it was nearly neutral to obtain a stesterite wet cake, which was denoted as Na-MgSP (moisture content: 80% by weight).
preparation example 2
[0062] Take 99.5g sodium metasilicate nonahydrate, 4.8g sodium hydroxide, 82.68g sodium carbonate dissolved in 500g water to make lye, then take 12.1g aluminum chloride hexahydrate, 72.7g nickel chloride hexahydrate dissolved in 50g water Make a salt solution, slowly drop the salt solution into the above alkali solution at 60°C to obtain an initial gel with a synthetic saponite layer charge of 1.0 (pH 12.10), then continue to age for 30 minutes, put it into a 1L autoclave, and Crystallized at 300°C for 48h. The obtained product was centrifuged and washed with deionized water until it was nearly neutral to obtain a nickel saponite wet cake, which was denoted as Na-NiSP (moisture content: 80% by weight).
[0063] Columnizing agent preparation example 1
[0064] In the state of heating and stirring, add dropwise 1M sodium hydroxide solution to the 0.4M aluminum chloride solution, and finally make the OH - / Al 3+ =2.3, the heating temperature is 80°C, and the aging time is 12h....
Embodiment 1
[0068] Add the soapstone raw material Na-MgSP into the buffer solution of citric acid-sodium citrate (pH is 4.0). The weight ratio of the acidic buffer solution to the sodium type soapstone raw material in dry weight is 10:1, and heat and stir at 40°C 0.5h, then carry out centrifugal separation, centrifuge speed 4500rpm, centrifugation time 30min, obtain the soapstone wet cake after acid treatment; Disperse the soapstone wet cake into aluminum crosslinking agent Al 13 7+ Medium (aluminum / saponite (by dry weight) = 2mmol / g), heated and stirred at 80°C for ion exchange for 1h, then centrifuged at 4500rpm for 30min, poured off the supernatant with water Washing, then adding water to stir for beating and centrifuging, and finally adding ethanol, stirring for beating and centrifuging to obtain pillared aluminum pillared saponite wet cake. Dry the alumite wet cake at 120°C for 6 hours, and then roast it in a muffle furnace at 550°C for 2 hours to obtain a hydrogen form of alumite, ...
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