Method for preparing zeolite membrane through thermal inversion of xerogel
A zeolite membrane and xerogel technology, applied in the field of chemical engineering, can solve problems such as reduction, and achieve the effects of reducing pollution, improving the uneven thickness of the membrane layer, and saving the preparation cost
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[0014] Preparation of sol and hydrothermal treatment solution:
[0015] In a 250ml beaker, 1.48g of aluminum sulfate was fully dissolved in 30ml of water to obtain solution (a), and another 11.4ml of silica sol (SiO 2 wt% = 25.5%) was diluted with 30ml of water, slowly added to (a) solution under strong stirring, and continued stirring for 30 minutes to form (b) solution, and then 1.12g of sodium hydroxide was dissolved in 30ml of water Make a solution, slowly drop into (b) under continuous stirring, and continue stirring for 3 hours to make a white milky sol (c); in another 250ml beaker, dissolve 1.12g of sodium hydroxide in 60ml of water, and add 4.25g of pyrrolidine and mix well to make hydrothermal treatment solution (d).
[0016] Vector preprocessing:
[0017] Polish the surface of the support carrier with 600# sandpaper, then use ultrasonic vibration to wash away the suspended particles on the surface and pores, then soak in acid or alkali for 24 hours, ultrasonically ...
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