Method for preparing copper silicate nanotube by using low-grade attapulgite clay
A technology of attapulgite clay and attapulgite, applied in the direction of nanotechnology, chemical instruments and methods, silicon compounds, etc., can solve problems such as no industrial application precedent, achieve good product stability, uniform pipe diameter distribution, and preparation process simple effect
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Embodiment 1
[0018] Example 1: 100 g of attapulgite clay raw ore was crushed through a 200-mesh sieve, then dispersed into 1000 mL of 3 mol / L hydrochloric acid aqueous solution, refluxed for 2 hours, centrifuged, and the solid was dried to obtain white powder A; 5 g was weighed Polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (P123) was dissolved in 1000 mL of water, and 120.8 g of copper nitrate trihydrate was dissolved in it to obtain mixed solution B; 20 g of white Disperse powder A into 1000 mL of mixed solution B, add 243 g of concentrated ammonia water (28% mass fraction) to it, and stir well to obtain a suspension; transfer the suspension to a hydrothermal reaction kettle and react at 160°C for 6 hours. The temperature was lowered to room temperature at a rate of 5 ℃ / min, and the solid product was separated by centrifugation, and then washed, dried, and pulverized to obtain light blue copper silicate nanotubes (code CuSi-1).
Embodiment 2
[0019] Example 2: 100 g of attapulgite clay raw ore was crushed through a 200-mesh sieve, then dispersed into 1000 mL of 3 mol / L hydrochloric acid aqueous solution, refluxed for 2 hours, centrifuged, and the solid was dried to obtain white powder A; weigh 20 g Trideceth-6 was dissolved in 1000 mL of water, and then 85.25 g of copper chloride dihydrate was dissolved in it to obtain mixed solution B; 20 g of white powder A was weighed and dispersed into 1000 mL of mixed solution B, and added 243 g of concentrated ammonia water (mass fraction 28%) was fully stirred to obtain a suspension; the suspension was transferred to a hydrothermal reaction kettle and reacted at 100°C for 24h, then cooled to room temperature at a rate of 5°C / min, and separated by centrifugation The solid product was obtained, and then washed, dried, and pulverized to obtain light blue copper silicate nanotubes (coded CuSi-2).
Embodiment 3
[0020] Example 3: 100 g of attapulgite clay raw ore was crushed through a 200-mesh sieve, then dispersed into 1000 mL of 3 mol / L hydrochloric acid aqueous solution, refluxed for 2 hours, centrifuged, and the solid was dried to obtain white powder A; weigh 10 g Propylene oxide-ethylene oxide polymer (F127) was dissolved in 1000 mL of water, and then 90.83 g of anhydrous copper acetate was dissolved in it to obtain mixed solution B; 20 g of white powder A was weighed and dispersed into 1000 mL of mixed solution B , add 486 g of concentrated ammonia water (mass fraction 28%) to it, and stir well to obtain a suspension; transfer the suspension to a hydrothermal reaction kettle, react at 120°C for 12h, and then cool down to room temperature at a rate of 5°C / min , the solid product was separated by centrifugation, and then washed, dried, and pulverized to obtain light blue copper silicate nanotubes (coded CuSi-3).
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